* [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3
@ 2025-03-24 14:20 Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 01/20] tools/x86/kcpuid: Fix error handling Ahmed S. Darwish
` (19 more replies)
0 siblings, 20 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Hi,
Update kcpuid's CSV file to latest x86-cpuid-db release. [*]
Changelog v3
------------
* Fix a rebase issue that was detected here:
https://lore.kernel.org/x86-cpuid/Z9GlyaR-oFEur1zy@lx-t490
This is now fixed at:
patch 13/20 ("tools/x86/kcpuid: Consolidate index validity checks")
* Answer HPA's review remark regarding PSN leaf 0x3:
https://lore.kernel.org/x86-cpuid/Z9qwzVuvV1p6MjRw@lx-t490
Changelog v2
------------
https://lore.kernel.org/x86-cpuid/20250312143738.458507-1-darwi@linutronix.de
* Patches 2, 4->5, 8->10, 13, 14, and 18->19 are new in v2.
* More bug fixes: patches 2, 4-5.
* More refactorings over what's already there at v1, to make the code
easier to work with. Patches 8->10, 13.
* Apply Dave Hansen review remark by avoiding explicit vendor detection
and just trying all CPUID ranges, and see if the CPU responds back with
something sensible. Patch 14.
* Apply HPA's review remark regarding Leaf 0x3 not being unique to
Transmeta. Patch 19 applies x86-cpuid-db v2.3 release, which has this
leaf removed and explains why.
* Patches 16->19, apply x86-cpuid-db v2.0 -> v2.3 changes. One release
per commit to make the kcpuid CSV diffs more sensible.
Changelog v1
------------
https://lore.kernel.org/x86-cpuid/20250306205000.227399-1-darwi@linutronix.de
This series updates kcpuid's CSV file from v1.0 to v2.2, as generated by
the x86-cpuid-db project. [*]
The new CSV adds multiple new leaves for Transmeta and Centaur/Zhaoxin.
It also introduces new bitfields at leaves 0x7, 0x80000001, 0x80000020,
and 0x80000021. More details about the CSV changes are at the actual
commit logs.
PQ Summary:
* Patch 1 is a generic kcpuid bugfix.
* Patches 2-4 are preparatory cleanups.
* Patches 5-9 add rudimentary x86 vendor detection and filtering to
kcpuid, as the CSV file is updated with indices that are exclusive to
certain CPU vendors.
* Patch 10 updates the CSV file to x86-cpuid-db v2.0.
* Patch 11 updates the CSV file to x86-cpuid-db v2.2.
Patch 10 and 11 are separated on purpose, to make the CSV commit log
diffs more sensible.
* Patch 12 puts the whole kcpuid tool under MAINTAINERS' X86 CPUID entry,
since changes to the CSV file may require updates to the kcpuid code.
This will also make myself and the x86-cpuid mailing list CCed for all
future kcpuid patches.
[*] https://gitlab.com/x86-cpuid.org/x86-cpuid-db
https://x86-cpuid.org
8<-----
Ahmed S. Darwish (20):
tools/x86/kcpuid: Fix error handling
tools/x86/kcpuid: Exit the program on invalid parameters
tools/x86/kcpuid: Simplify usage() handling
tools/x86/kcpuid: Save CPUID output in an array
tools/x86/kcpuid: Print correct CPUID output register names
tools/x86/kcpuid: Remove unused local variable
tools/x86/kcpuid: Remove unused global variable
tools/x86/kcpuid: Set function return type to void
tools/x86/kcpuid: Use C99-style for loops
tools/x86/kcpuid: Use <cpuid.h> intrinsics
tools/x86/kcpuid: Refactor CPUID range handling for future expansion
tools/x86/kcpuid: Extend CPUID index mask macro
tools/x86/kcpuid: Consolidate index validity checks
tools/x86/kcpuid: Filter valid CPUID ranges
tools/x86/kcpuid: Define Transmeta and Centaur index ranges
tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.0
tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.1
tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.2
tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3
MAINTAINERS: Include kcpuid under X86 CPUID DATABASE
MAINTAINERS | 2 +-
tools/arch/x86/kcpuid/cpuid.csv | 791 ++++++++++++++++++--------------
tools/arch/x86/kcpuid/kcpuid.c | 375 ++++++++-------
3 files changed, 636 insertions(+), 532 deletions(-)
base-commit: 4701f33a10702d5fc577c32434eb62adde0a1ae1
--
2.48.1
^ permalink raw reply [flat|nested] 22+ messages in thread
* [PATCH v3 01/20] tools/x86/kcpuid: Fix error handling
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-25 8:55 ` Ingo Molnar
2025-03-24 14:20 ` [PATCH v3 02/20] tools/x86/kcpuid: Exit the program on invalid parameters Ahmed S. Darwish
` (18 subsequent siblings)
19 siblings, 1 reply; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Error handling in kcpuid is unreliable. On malloc() failures, the code
prints an error then just goes on. The error messages are also printed
to standard output instead of standard error.
Use err() and errx() from <err.h> to direct all error messages to
standard error and automatically exit the program. Use err() to include
the errno information, and errx() otherwise. Use warnx() for warnings.
While at it, alphabetically reorder the header includes.
Fixes: c6b2f240bf8d ("tools/x86: Add a kcpuid tool to show raw CPU features")
Reported-by: Remington Brasga <rbrasga@uci.edu>
Closes: https://lkml.kernel.org/r/20240926223557.2048-1-rbrasga@uci.edu
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 47 +++++++++++++++++-----------------
1 file changed, 23 insertions(+), 24 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 1b25c0a95d3f..abfeecce5aa8 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -1,11 +1,12 @@
// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
-#include <stdio.h>
+#include <err.h>
+#include <getopt.h>
#include <stdbool.h>
+#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <getopt.h>
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define min(a, b) (((a) < (b)) ? (a) : (b))
@@ -145,14 +146,14 @@ static bool cpuid_store(struct cpuid_range *range, u32 f, int subleaf,
if (!func->leafs) {
func->leafs = malloc(sizeof(struct subleaf));
if (!func->leafs)
- perror("malloc func leaf");
+ err(EXIT_FAILURE, NULL);
func->nr = 1;
} else {
s = func->nr;
func->leafs = realloc(func->leafs, (s + 1) * sizeof(*leaf));
if (!func->leafs)
- perror("realloc f->leafs");
+ err(EXIT_FAILURE, NULL);
func->nr++;
}
@@ -211,7 +212,7 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
range = malloc(sizeof(struct cpuid_range));
if (!range)
- perror("malloc range");
+ err(EXIT_FAILURE, NULL);
if (input_eax & 0x80000000)
range->is_ext = true;
@@ -220,7 +221,7 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
range->funcs = malloc(sizeof(struct cpuid_func) * idx_func);
if (!range->funcs)
- perror("malloc range->funcs");
+ err(EXIT_FAILURE, NULL);
range->nr = idx_func;
memset(range->funcs, 0, sizeof(struct cpuid_func) * idx_func);
@@ -395,8 +396,8 @@ static int parse_line(char *line)
return 0;
err_exit:
- printf("Warning: wrong line format:\n");
- printf("\tline[%d]: %s\n", flines, line);
+ warnx("Wrong line format:\n"
+ "\tline[%d]: %s", flines, line);
return -1;
}
@@ -418,10 +419,8 @@ static void parse_text(void)
file = fopen("./cpuid.csv", "r");
}
- if (!file) {
- printf("Fail to open '%s'\n", filename);
- return;
- }
+ if (!file)
+ err(EXIT_FAILURE, "%s", filename);
while (1) {
ret = getline(&line, &len, file);
@@ -530,7 +529,7 @@ static inline struct cpuid_func *index_to_func(u32 index)
func_idx = index & 0xffff;
if ((func_idx + 1) > (u32)range->nr) {
- printf("ERR: invalid input index (0x%x)\n", index);
+ warnx("Invalid input index (0x%x)", index);
return NULL;
}
return &range->funcs[func_idx];
@@ -562,7 +561,7 @@ static void show_info(void)
return;
}
- printf("ERR: invalid input subleaf (0x%x)\n", user_sub);
+ warnx("Invalid input subleaf (0x%x)", user_sub);
}
show_func(func);
@@ -593,15 +592,15 @@ static void setup_platform_cpuid(void)
static void usage(void)
{
- printf("kcpuid [-abdfhr] [-l leaf] [-s subleaf]\n"
- "\t-a|--all Show both bit flags and complex bit fields info\n"
- "\t-b|--bitflags Show boolean flags only\n"
- "\t-d|--detail Show details of the flag/fields (default)\n"
- "\t-f|--flags Specify the cpuid csv file\n"
- "\t-h|--help Show usage info\n"
- "\t-l|--leaf=index Specify the leaf you want to check\n"
- "\t-r|--raw Show raw cpuid data\n"
- "\t-s|--subleaf=sub Specify the subleaf you want to check\n"
+ warnx("kcpuid [-abdfhr] [-l leaf] [-s subleaf]\n"
+ "\t-a|--all Show both bit flags and complex bit fields info\n"
+ "\t-b|--bitflags Show boolean flags only\n"
+ "\t-d|--detail Show details of the flag/fields (default)\n"
+ "\t-f|--flags Specify the cpuid csv file\n"
+ "\t-h|--help Show usage info\n"
+ "\t-l|--leaf=index Specify the leaf you want to check\n"
+ "\t-r|--raw Show raw cpuid data\n"
+ "\t-s|--subleaf=sub Specify the subleaf you want to check"
);
}
@@ -652,7 +651,7 @@ static int parse_options(int argc, char *argv[])
user_sub = strtoul(optarg, NULL, 0);
break;
default:
- printf("%s: Invalid option '%c'\n", argv[0], optopt);
+ warnx("Invalid option '%c'", optopt);
return -1;
}
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 02/20] tools/x86/kcpuid: Exit the program on invalid parameters
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 01/20] tools/x86/kcpuid: Fix error handling Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 03/20] tools/x86/kcpuid: Simplify usage() handling Ahmed S. Darwish
` (17 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
If the user passed an invalid CPUID index value through --leaf=index,
kcpuid prints a warning, does nothing, then exits successfully.
Transform the warning to an error, and exit the program with a proper
error code.
Similarly, if the user passed an invalid subleaf, kcpuid prints a
warning, dumps the whole leaf, then exits successfully. Print a clear
error message regarding the invalid subleaf and exit the program with the
proper error code.
Note, moving the "Invalid input index" message from index_to_func() to
show_info() localizes error message handling to the latter, where it
should be. It also allows index_to_func() to be refactored at further
commits.
Note, since after this commit and its parent kcpuid does not just "move
on" on failures, remove the NULL parameter check plus silent exit at
show_func() and show_leaf().
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 22 ++++++++--------------
1 file changed, 8 insertions(+), 14 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index abfeecce5aa8..8585c1009c8b 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -481,9 +481,6 @@ static void decode_bits(u32 value, struct reg_desc *rdesc, enum cpuid_reg reg)
static void show_leaf(struct subleaf *leaf)
{
- if (!leaf)
- return;
-
if (show_raw) {
leaf_print_raw(leaf);
} else {
@@ -505,9 +502,6 @@ static void show_func(struct cpuid_func *func)
{
int i;
- if (!func)
- return;
-
for (i = 0; i < func->nr; i++)
show_leaf(&func->leafs[i]);
}
@@ -528,10 +522,9 @@ static inline struct cpuid_func *index_to_func(u32 index)
range = (index & 0x80000000) ? leafs_ext : leafs_basic;
func_idx = index & 0xffff;
- if ((func_idx + 1) > (u32)range->nr) {
- warnx("Invalid input index (0x%x)", index);
+ if ((func_idx + 1) > (u32)range->nr)
return NULL;
- }
+
return &range->funcs[func_idx];
}
@@ -550,18 +543,19 @@ static void show_info(void)
/* Only show specific leaf/subleaf info */
func = index_to_func(user_index);
if (!func)
- return;
+ errx(EXIT_FAILURE, "Invalid input leaf (0x%x)", user_index);
/* Dump the raw data also */
show_raw = true;
if (user_sub != 0xFFFFFFFF) {
- if (user_sub + 1 <= (u32)func->nr) {
- show_leaf(&func->leafs[user_sub]);
- return;
+ if (user_sub + 1 > (u32)func->nr) {
+ errx(EXIT_FAILURE, "Leaf 0x%x has no valid subleaf = 0x%x",
+ user_index, user_sub);
}
- warnx("Invalid input subleaf (0x%x)", user_sub);
+ show_leaf(&func->leafs[user_sub]);
+ return;
}
show_func(func);
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 03/20] tools/x86/kcpuid: Simplify usage() handling
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 01/20] tools/x86/kcpuid: Fix error handling Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 02/20] tools/x86/kcpuid: Exit the program on invalid parameters Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 04/20] tools/x86/kcpuid: Save CPUID output in an array Ahmed S. Darwish
` (16 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Refactor usage() to accept an exit code parameter and exit the program
after usage output. This streamlines its callers' code paths.
Remove the "Invalid option" error message since getopt_long(3) already
emits a similar message by default.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 37 +++++++++++++++-------------------
1 file changed, 16 insertions(+), 21 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 8585c1009c8b..b760c5730c89 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -10,6 +10,7 @@
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define min(a, b) (((a) < (b)) ? (a) : (b))
+#define __noreturn __attribute__((__noreturn__))
typedef unsigned int u32;
typedef unsigned long long u64;
@@ -584,17 +585,17 @@ static void setup_platform_cpuid(void)
leafs_ext = setup_cpuid_range(0x80000000);
}
-static void usage(void)
+static void __noreturn usage(int exit_code)
{
- warnx("kcpuid [-abdfhr] [-l leaf] [-s subleaf]\n"
- "\t-a|--all Show both bit flags and complex bit fields info\n"
- "\t-b|--bitflags Show boolean flags only\n"
- "\t-d|--detail Show details of the flag/fields (default)\n"
- "\t-f|--flags Specify the cpuid csv file\n"
- "\t-h|--help Show usage info\n"
- "\t-l|--leaf=index Specify the leaf you want to check\n"
- "\t-r|--raw Show raw cpuid data\n"
- "\t-s|--subleaf=sub Specify the subleaf you want to check"
+ errx(exit_code, "kcpuid [-abdfhr] [-l leaf] [-s subleaf]\n"
+ "\t-a|--all Show both bit flags and complex bit fields info\n"
+ "\t-b|--bitflags Show boolean flags only\n"
+ "\t-d|--detail Show details of the flag/fields (default)\n"
+ "\t-f|--flags Specify the cpuid csv file\n"
+ "\t-h|--help Show usage info\n"
+ "\t-l|--leaf=index Specify the leaf you want to check\n"
+ "\t-r|--raw Show raw cpuid data\n"
+ "\t-s|--subleaf=sub Specify the subleaf you want to check"
);
}
@@ -610,7 +611,7 @@ static struct option opts[] = {
{ NULL, 0, NULL, 0 }
};
-static int parse_options(int argc, char *argv[])
+static void parse_options(int argc, char *argv[])
{
int c;
@@ -630,9 +631,7 @@ static int parse_options(int argc, char *argv[])
user_csv = optarg;
break;
case 'h':
- usage();
- exit(1);
- break;
+ usage(EXIT_SUCCESS);
case 'l':
/* main leaf */
user_index = strtoul(optarg, NULL, 0);
@@ -645,11 +644,8 @@ static int parse_options(int argc, char *argv[])
user_sub = strtoul(optarg, NULL, 0);
break;
default:
- warnx("Invalid option '%c'", optopt);
- return -1;
- }
-
- return 0;
+ usage(EXIT_FAILURE);
+ }
}
/*
@@ -662,8 +658,7 @@ static int parse_options(int argc, char *argv[])
*/
int main(int argc, char *argv[])
{
- if (parse_options(argc, argv))
- return -1;
+ parse_options(argc, argv);
/* Setup the cpuid leafs of current platform */
setup_platform_cpuid();
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 04/20] tools/x86/kcpuid: Save CPUID output in an array
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (2 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 03/20] tools/x86/kcpuid: Simplify usage() handling Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 05/20] tools/x86/kcpuid: Print correct CPUID output register names Ahmed S. Darwish
` (15 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
For each CPUID leaf/subleaf query, save the output in an output[] array
instead of spelling it out using EAX to EDX variables.
This allows the CPUID output to be accessed programmatically instead of
calling decode_bits() four times. Loop-based access also allows "kcpuid
--detail" to print the correct output register names in next commit.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 24 +++++++++++-------------
1 file changed, 11 insertions(+), 13 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index b760c5730c89..dfabc0a56507 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -51,7 +51,7 @@ static const char * const reg_names[] = {
struct subleaf {
u32 index;
u32 sub;
- u32 eax, ebx, ecx, edx;
+ u32 output[NR_REGS];
struct reg_desc info[NR_REGS];
};
@@ -119,11 +119,11 @@ static void leaf_print_raw(struct subleaf *leaf)
if (leaf->sub == 0)
printf("0x%08x: subleafs:\n", leaf->index);
- printf(" %2d: EAX=0x%08x, EBX=0x%08x, ECX=0x%08x, EDX=0x%08x\n",
- leaf->sub, leaf->eax, leaf->ebx, leaf->ecx, leaf->edx);
+ printf(" %2d: EAX=0x%08x, EBX=0x%08x, ECX=0x%08x, EDX=0x%08x\n", leaf->sub,
+ leaf->output[0], leaf->output[1], leaf->output[2], leaf->output[3]);
} else {
- printf("0x%08x: EAX=0x%08x, EBX=0x%08x, ECX=0x%08x, EDX=0x%08x\n",
- leaf->index, leaf->eax, leaf->ebx, leaf->ecx, leaf->edx);
+ printf("0x%08x: EAX=0x%08x, EBX=0x%08x, ECX=0x%08x, EDX=0x%08x\n", leaf->index,
+ leaf->output[0], leaf->output[1], leaf->output[2], leaf->output[3]);
}
}
@@ -163,10 +163,10 @@ static bool cpuid_store(struct cpuid_range *range, u32 f, int subleaf,
leaf->index = f;
leaf->sub = subleaf;
- leaf->eax = a;
- leaf->ebx = b;
- leaf->ecx = c;
- leaf->edx = d;
+ leaf->output[R_EAX] = a;
+ leaf->output[R_EBX] = b;
+ leaf->output[R_ECX] = c;
+ leaf->output[R_EDX] = d;
return false;
}
@@ -490,10 +490,8 @@ static void show_leaf(struct subleaf *leaf)
leaf->index, leaf->sub);
}
- decode_bits(leaf->eax, &leaf->info[R_EAX], R_EAX);
- decode_bits(leaf->ebx, &leaf->info[R_EBX], R_EBX);
- decode_bits(leaf->ecx, &leaf->info[R_ECX], R_ECX);
- decode_bits(leaf->edx, &leaf->info[R_EDX], R_EDX);
+ for (int i = R_EAX; i < NR_REGS; i++)
+ decode_bits(leaf->output[i], &leaf->info[i], i);
if (!show_raw && show_details)
printf("\n");
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 05/20] tools/x86/kcpuid: Print correct CPUID output register names
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (3 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 04/20] tools/x86/kcpuid: Save CPUID output in an array Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 06/20] tools/x86/kcpuid: Remove unused local variable Ahmed S. Darwish
` (14 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
kcpuid --all --detail claims that all bits belong to ECX, in the form
of the header CPUID_${leaf}_ECX[${subleaf}].
Print the correct register name for all CPUID output.
kcpuid --detail also dumps the raw register value if a leaf/subleaf is
covered in the CSV file, but a certain output register within it is not
covered by any CSV entry. Since register names are now properly printed,
and since the CSV file has become exhaustive using x86-cpuid-db, remove
that value dump as it pollutes the output.
While at it, rename decode_bits() to show_reg(). This makes it match its
show_range(), show_leaf() and show_reg_header() counterparts.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 31 +++++++++++++------------------
1 file changed, 13 insertions(+), 18 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index dfabc0a56507..d518a13e4386 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -436,20 +436,12 @@ static void parse_text(void)
fclose(file);
}
-
-/* Decode every eax/ebx/ecx/edx */
-static void decode_bits(u32 value, struct reg_desc *rdesc, enum cpuid_reg reg)
+static void show_reg(const struct reg_desc *rdesc, u32 value)
{
- struct bits_desc *bdesc;
+ const struct bits_desc *bdesc;
int start, end, i;
u32 mask;
- if (!rdesc->nr) {
- if (show_details)
- printf("\t %s: 0x%08x\n", reg_names[reg], value);
- return;
- }
-
for (i = 0; i < rdesc->nr; i++) {
bdesc = &rdesc->descs[i];
@@ -480,18 +472,21 @@ static void decode_bits(u32 value, struct reg_desc *rdesc, enum cpuid_reg reg)
}
}
+static void show_reg_header(bool has_entries, u32 leaf, u32 subleaf, const char *reg_name)
+{
+ if (show_details && has_entries)
+ printf("CPUID_0x%x_%s[0x%x]:\n", leaf, reg_name, subleaf);
+}
+
static void show_leaf(struct subleaf *leaf)
{
- if (show_raw) {
+ if (show_raw)
leaf_print_raw(leaf);
- } else {
- if (show_details)
- printf("CPUID_0x%x_ECX[0x%x]:\n",
- leaf->index, leaf->sub);
- }
- for (int i = R_EAX; i < NR_REGS; i++)
- decode_bits(leaf->output[i], &leaf->info[i], i);
+ for (int i = R_EAX; i < NR_REGS; i++) {
+ show_reg_header((leaf->info[i].nr > 0), leaf->index, leaf->sub, reg_names[i]);
+ show_reg(&leaf->info[i], leaf->output[i]);
+ }
if (!show_raw && show_details)
printf("\n");
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 06/20] tools/x86/kcpuid: Remove unused local variable
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (4 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 05/20] tools/x86/kcpuid: Print correct CPUID output register names Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 07/20] tools/x86/kcpuid: Remove unused global variable Ahmed S. Darwish
` (13 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
The local variable "index" is written to, but is not read from
anywhere. Remove it.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 4 ----
1 file changed, 4 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index d518a13e4386..a89da2af98e9 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -181,10 +181,6 @@ static void raw_dump_range(struct cpuid_range *range)
for (f = 0; (int)f < range->nr; f++) {
struct cpuid_func *func = &range->funcs[f];
- u32 index = f;
-
- if (range->is_ext)
- index += 0x80000000;
/* Skip leaf without valid items */
if (!func->nr)
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 07/20] tools/x86/kcpuid: Remove unused global variable
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (5 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 06/20] tools/x86/kcpuid: Remove unused local variable Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 08/20] tools/x86/kcpuid: Set function return type to void Ahmed S. Darwish
` (12 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
The global variable "is_amd" is written to, but is not read from
anywhere. Remove it.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 11 -----------
1 file changed, 11 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index a89da2af98e9..908f0de2d4f0 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -79,7 +79,6 @@ struct cpuid_range {
*/
struct cpuid_range *leafs_basic, *leafs_ext;
-static bool is_amd;
static bool show_details;
static bool show_raw;
static bool show_flags_only = true;
@@ -559,16 +558,6 @@ static void show_info(void)
static void setup_platform_cpuid(void)
{
- u32 eax, ebx, ecx, edx;
-
- /* Check vendor */
- eax = ebx = ecx = edx = 0;
- cpuid(&eax, &ebx, &ecx, &edx);
-
- /* "htuA" */
- if (ebx == 0x68747541)
- is_amd = true;
-
/* Setup leafs for the basic and extended range */
leafs_basic = setup_cpuid_range(0x0);
leafs_ext = setup_cpuid_range(0x80000000);
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 08/20] tools/x86/kcpuid: Set function return type to void
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (6 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 07/20] tools/x86/kcpuid: Remove unused global variable Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 09/20] tools/x86/kcpuid: Use C99-style for loops Ahmed S. Darwish
` (11 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
parse_line() returns an integer but its caller ignored it. Change the
function signature to return void.
While at it, adjust some of the "Skip line" comments for readability.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 20 +++++++++-----------
1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 908f0de2d4f0..1db2c8d7cf27 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -277,7 +277,7 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
* 0, 0, EAX, 31:0, max_basic_leafs, Max input value for supported subleafs
* 1, 0, ECX, 0, sse3, Streaming SIMD Extensions 3(SSE3)
*/
-static int parse_line(char *line)
+static void parse_line(char *line)
{
char *str;
int i;
@@ -307,7 +307,7 @@ static int parse_line(char *line)
/* Skip comments and NULL line */
if (line[0] == '#' || line[0] == '\n')
- return 0;
+ return;
strncpy(buffer, line, 511);
buffer[511] = 0;
@@ -330,16 +330,15 @@ static int parse_line(char *line)
else
range = leafs_basic;
- index &= 0x7FFFFFFF;
/* Skip line parsing for non-existing indexes */
+ index &= 0x7FFFFFFF;
if ((int)index >= range->nr)
- return -1;
+ return;
+ /* Skip line parsing if the index CPUID output is all zero */
func = &range->funcs[index];
-
- /* Return if the index has no valid item on this platform */
if (!func->nr)
- return 0;
+ return;
/* subleaf */
buf = tokens[1];
@@ -352,11 +351,11 @@ static int parse_line(char *line)
subleaf_start = strtoul(start, NULL, 0);
subleaf_end = min(subleaf_end, (u32)(func->nr - 1));
if (subleaf_start > subleaf_end)
- return 0;
+ return;
} else {
subleaf_start = subleaf_end;
if (subleaf_start > (u32)(func->nr - 1))
- return 0;
+ return;
}
/* register */
@@ -389,12 +388,11 @@ static int parse_line(char *line)
strcpy(bdesc->simp, strtok(tokens[4], " \t"));
strcpy(bdesc->detail, tokens[5]);
}
- return 0;
+ return;
err_exit:
warnx("Wrong line format:\n"
"\tline[%d]: %s", flines, line);
- return -1;
}
/* Parse csv file, and construct the array of all leafs and subleafs */
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 09/20] tools/x86/kcpuid: Use C99-style for loops
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (7 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 08/20] tools/x86/kcpuid: Set function return type to void Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 10/20] tools/x86/kcpuid: Use <cpuid.h> intrinsics Ahmed S. Darwish
` (10 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Since commit e8c07082a810 ("Kbuild: move to -std=gnu11") and the kernel
allows C99-style variable declarations inside of a for() loop.
Adjust the kcpuid code accordingly.
Note, this helps readability as some of the kcpuid functions have a huge
list of variable declarations on top.
Note, remove the empty lines before cpuid() invocations as it is clearer
to have their parameter initialization and the actual call in one block.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 52 ++++++++++++++--------------------
1 file changed, 21 insertions(+), 31 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 1db2c8d7cf27..79deb506b349 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -172,13 +172,10 @@ static bool cpuid_store(struct cpuid_range *range, u32 f, int subleaf,
static void raw_dump_range(struct cpuid_range *range)
{
- u32 f;
- int i;
-
printf("%s Leafs :\n", range->is_ext ? "Extended" : "Basic");
printf("================\n");
- for (f = 0; (int)f < range->nr; f++) {
+ for (u32 f = 0; (int)f < range->nr; f++) {
struct cpuid_func *func = &range->funcs[f];
/* Skip leaf without valid items */
@@ -186,7 +183,7 @@ static void raw_dump_range(struct cpuid_range *range)
continue;
/* First item is the main leaf, followed by all subleafs */
- for (i = 0; i < func->nr; i++)
+ for (int i = 0; i < func->nr; i++)
leaf_print_raw(&func->leafs[i]);
}
}
@@ -194,15 +191,14 @@ static void raw_dump_range(struct cpuid_range *range)
#define MAX_SUBLEAF_NUM 64
struct cpuid_range *setup_cpuid_range(u32 input_eax)
{
- u32 max_func, idx_func, subleaf, max_subleaf;
- u32 eax, ebx, ecx, edx, f = input_eax;
struct cpuid_range *range;
- bool allzero;
+ u32 max_func, idx_func;
+ u32 eax, ebx, ecx, edx;
eax = input_eax;
ebx = ecx = edx = 0;
-
cpuid(&eax, &ebx, &ecx, &edx);
+
max_func = eax;
idx_func = (max_func & 0xffff) + 1;
@@ -222,20 +218,21 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
range->nr = idx_func;
memset(range->funcs, 0, sizeof(struct cpuid_func) * idx_func);
- for (; f <= max_func; f++) {
- eax = f;
- subleaf = ecx = 0;
+ for (u32 f = input_eax; f <= max_func; f++) {
+ u32 max_subleaf = MAX_SUBLEAF_NUM;
+ bool allzero;
+ eax = f;
+ ecx = 0;
cpuid(&eax, &ebx, &ecx, &edx);
- allzero = cpuid_store(range, f, subleaf, eax, ebx, ecx, edx);
+
+ allzero = cpuid_store(range, f, 0, eax, ebx, ecx, edx);
if (allzero)
continue;
if (!has_subleafs(f))
continue;
- max_subleaf = MAX_SUBLEAF_NUM;
-
/*
* Some can provide the exact number of subleafs,
* others have to be tried (0xf)
@@ -253,13 +250,12 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
if (f == 0x80000026)
max_subleaf = 5;
- for (subleaf = 1; subleaf < max_subleaf; subleaf++) {
+ for (u32 subleaf = 1; subleaf < max_subleaf; subleaf++) {
eax = f;
ecx = subleaf;
-
cpuid(&eax, &ebx, &ecx, &edx);
- allzero = cpuid_store(range, f, subleaf,
- eax, ebx, ecx, edx);
+
+ allzero = cpuid_store(range, f, subleaf, eax, ebx, ecx, edx);
if (allzero)
continue;
}
@@ -280,12 +276,10 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
static void parse_line(char *line)
{
char *str;
- int i;
struct cpuid_range *range;
struct cpuid_func *func;
struct subleaf *leaf;
u32 index;
- u32 sub;
char buffer[512];
char *buf;
/*
@@ -312,7 +306,7 @@ static void parse_line(char *line)
strncpy(buffer, line, 511);
buffer[511] = 0;
str = buffer;
- for (i = 0; i < 5; i++) {
+ for (int i = 0; i < 5; i++) {
tokens[i] = strtok(str, ",");
if (!tokens[i])
goto err_exit;
@@ -378,7 +372,7 @@ static void parse_line(char *line)
bit_end = strtoul(end, NULL, 0);
bit_start = (start) ? strtoul(start, NULL, 0) : bit_end;
- for (sub = subleaf_start; sub <= subleaf_end; sub++) {
+ for (u32 sub = subleaf_start; sub <= subleaf_end; sub++) {
leaf = &func->leafs[sub];
reg = &leaf->info[reg_index];
bdesc = ®->descs[reg->nr++];
@@ -432,10 +426,10 @@ static void parse_text(void)
static void show_reg(const struct reg_desc *rdesc, u32 value)
{
const struct bits_desc *bdesc;
- int start, end, i;
+ int start, end;
u32 mask;
- for (i = 0; i < rdesc->nr; i++) {
+ for (int i = 0; i < rdesc->nr; i++) {
bdesc = &rdesc->descs[i];
start = bdesc->start;
@@ -487,17 +481,13 @@ static void show_leaf(struct subleaf *leaf)
static void show_func(struct cpuid_func *func)
{
- int i;
-
- for (i = 0; i < func->nr; i++)
+ for (int i = 0; i < func->nr; i++)
show_leaf(&func->leafs[i]);
}
static void show_range(struct cpuid_range *range)
{
- int i;
-
- for (i = 0; i < range->nr; i++)
+ for (int i = 0; i < range->nr; i++)
show_func(&range->funcs[i]);
}
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 10/20] tools/x86/kcpuid: Use <cpuid.h> intrinsics
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (8 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 09/20] tools/x86/kcpuid: Use C99-style for loops Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 11/20] tools/x86/kcpuid: Refactor CPUID range handling for future expansion Ahmed S. Darwish
` (9 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Use the __cpuid_count() intrinsic, provided by GCC and LLVM, instead of
rolling a manual version. Both of the kernel's minimum required GCC
version (5.1) and LLVM version (13.0.1) supports it, and it is heavily
used across standard Linux user-space tooling.
This also makes the CPUID call sites more readable.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 37 ++++++++++++++--------------------
1 file changed, 15 insertions(+), 22 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 79deb506b349..0dbd93ab652a 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
+#include <cpuid.h>
#include <err.h>
#include <getopt.h>
#include <stdbool.h>
@@ -86,16 +87,16 @@ static u32 user_index = 0xFFFFFFFF;
static u32 user_sub = 0xFFFFFFFF;
static int flines;
-static inline void cpuid(u32 *eax, u32 *ebx, u32 *ecx, u32 *edx)
-{
- /* ecx is often an input as well as an output. */
- asm volatile("cpuid"
- : "=a" (*eax),
- "=b" (*ebx),
- "=c" (*ecx),
- "=d" (*edx)
- : "0" (*eax), "2" (*ecx));
-}
+/*
+ * Force using <cpuid.h> __cpuid_count() instead of __cpuid(). The
+ * latter leaves ECX uninitialized, which can break CPUID queries.
+ */
+
+#define cpuid(leaf, a, b, c, d) \
+ __cpuid_count(leaf, 0, a, b, c, d)
+
+#define cpuid_count(leaf, subleaf, a, b, c, d) \
+ __cpuid_count(leaf, subleaf, a, b, c, d)
static inline bool has_subleafs(u32 f)
{
@@ -195,12 +196,7 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
u32 max_func, idx_func;
u32 eax, ebx, ecx, edx;
- eax = input_eax;
- ebx = ecx = edx = 0;
- cpuid(&eax, &ebx, &ecx, &edx);
-
- max_func = eax;
- idx_func = (max_func & 0xffff) + 1;
+ cpuid(input_eax, max_func, ebx, ecx, edx);
range = malloc(sizeof(struct cpuid_range));
if (!range)
@@ -211,6 +207,7 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
else
range->is_ext = false;
+ idx_func = (max_func & 0xffff) + 1;
range->funcs = malloc(sizeof(struct cpuid_func) * idx_func);
if (!range->funcs)
err(EXIT_FAILURE, NULL);
@@ -222,9 +219,7 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
u32 max_subleaf = MAX_SUBLEAF_NUM;
bool allzero;
- eax = f;
- ecx = 0;
- cpuid(&eax, &ebx, &ecx, &edx);
+ cpuid(f, eax, ebx, ecx, edx);
allzero = cpuid_store(range, f, 0, eax, ebx, ecx, edx);
if (allzero)
@@ -251,9 +246,7 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
max_subleaf = 5;
for (u32 subleaf = 1; subleaf < max_subleaf; subleaf++) {
- eax = f;
- ecx = subleaf;
- cpuid(&eax, &ebx, &ecx, &edx);
+ cpuid_count(f, subleaf, eax, ebx, ecx, edx);
allzero = cpuid_store(range, f, subleaf, eax, ebx, ecx, edx);
if (allzero)
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 11/20] tools/x86/kcpuid: Refactor CPUID range handling for future expansion
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (9 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 10/20] tools/x86/kcpuid: Use <cpuid.h> intrinsics Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 12/20] tools/x86/kcpuid: Extend CPUID index mask macro Ahmed S. Darwish
` (8 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
The kcpuid code assumes only two CPUID index ranges, standard (0x0...)
and extended (0x80000000...).
Since additional CPUID index ranges will be added in further commits,
replace the "is_ext" boolean with enumeration-based range classification.
Collect all CPUID ranges in a structured array and introduce helper
macros to iterate over it. Use such helpers throughout the code.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 100 +++++++++++++++++++--------------
1 file changed, 59 insertions(+), 41 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 0dbd93ab652a..00a3b7a8953c 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -66,19 +66,50 @@ struct cpuid_func {
int nr;
};
+enum range_index {
+ RANGE_STD = 0, /* Standard */
+ RANGE_EXT = 0x80000000, /* Extended */
+};
+
+#define CPUID_INDEX_MASK 0x80000000
+#define CPUID_FUNCTION_MASK (~CPUID_INDEX_MASK)
+
struct cpuid_range {
/* array of main leafs */
struct cpuid_func *funcs;
/* number of valid leafs */
int nr;
- bool is_ext;
+ enum range_index index;
};
-/*
- * basic: basic functions range: [0... ]
- * ext: extended functions range: [0x80000000... ]
- */
-struct cpuid_range *leafs_basic, *leafs_ext;
+static struct cpuid_range ranges[] = {
+ { .index = RANGE_STD, },
+ { .index = RANGE_EXT, },
+};
+
+static char *range_to_str(struct cpuid_range *range)
+{
+ switch (range->index) {
+ case RANGE_STD: return "Standard";
+ case RANGE_EXT: return "Extended";
+ default: return NULL;
+ }
+}
+
+#define for_each_cpuid_range(range) \
+ for (unsigned int i = 0; i < ARRAY_SIZE(ranges) && ((range) = &ranges[i]); i++)
+
+struct cpuid_range *index_to_cpuid_range(u32 index)
+{
+ struct cpuid_range *range;
+
+ for_each_cpuid_range(range) {
+ if (range->index == (index & CPUID_INDEX_MASK))
+ return range;
+ }
+
+ return NULL;
+}
static bool show_details;
static bool show_raw;
@@ -173,7 +204,7 @@ static bool cpuid_store(struct cpuid_range *range, u32 f, int subleaf,
static void raw_dump_range(struct cpuid_range *range)
{
- printf("%s Leafs :\n", range->is_ext ? "Extended" : "Basic");
+ printf("%s Leafs :\n", range_to_str(range));
printf("================\n");
for (u32 f = 0; (int)f < range->nr; f++) {
@@ -190,22 +221,12 @@ static void raw_dump_range(struct cpuid_range *range)
}
#define MAX_SUBLEAF_NUM 64
-struct cpuid_range *setup_cpuid_range(u32 input_eax)
+void setup_cpuid_range(struct cpuid_range *range)
{
- struct cpuid_range *range;
u32 max_func, idx_func;
u32 eax, ebx, ecx, edx;
- cpuid(input_eax, max_func, ebx, ecx, edx);
-
- range = malloc(sizeof(struct cpuid_range));
- if (!range)
- err(EXIT_FAILURE, NULL);
-
- if (input_eax & 0x80000000)
- range->is_ext = true;
- else
- range->is_ext = false;
+ cpuid(range->index, max_func, ebx, ecx, edx);
idx_func = (max_func & 0xffff) + 1;
range->funcs = malloc(sizeof(struct cpuid_func) * idx_func);
@@ -215,7 +236,7 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
range->nr = idx_func;
memset(range->funcs, 0, sizeof(struct cpuid_func) * idx_func);
- for (u32 f = input_eax; f <= max_func; f++) {
+ for (u32 f = range->index; f <= max_func; f++) {
u32 max_subleaf = MAX_SUBLEAF_NUM;
bool allzero;
@@ -254,8 +275,6 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
}
}
-
- return range;
}
/*
@@ -312,13 +331,13 @@ static void parse_line(char *line)
/* index/main-leaf */
index = strtoull(tokens[0], NULL, 0);
- if (index & 0x80000000)
- range = leafs_ext;
- else
- range = leafs_basic;
+ /* Skip line parsing if it's not covered by known ranges */
+ range = index_to_cpuid_range(index);
+ if (!range)
+ return;
/* Skip line parsing for non-existing indexes */
- index &= 0x7FFFFFFF;
+ index &= CPUID_FUNCTION_MASK;
if ((int)index >= range->nr)
return;
@@ -489,9 +508,11 @@ static inline struct cpuid_func *index_to_func(u32 index)
struct cpuid_range *range;
u32 func_idx;
- range = (index & 0x80000000) ? leafs_ext : leafs_basic;
- func_idx = index & 0xffff;
+ range = index_to_cpuid_range(index);
+ if (!range)
+ return NULL;
+ func_idx = index & 0xffff;
if ((func_idx + 1) > (u32)range->nr)
return NULL;
@@ -500,12 +521,13 @@ static inline struct cpuid_func *index_to_func(u32 index)
static void show_info(void)
{
+ struct cpuid_range *range;
struct cpuid_func *func;
if (show_raw) {
/* Show all of the raw output of 'cpuid' instr */
- raw_dump_range(leafs_basic);
- raw_dump_range(leafs_ext);
+ for_each_cpuid_range(range)
+ raw_dump_range(range);
return;
}
@@ -533,15 +555,8 @@ static void show_info(void)
}
printf("CPU features:\n=============\n\n");
- show_range(leafs_basic);
- show_range(leafs_ext);
-}
-
-static void setup_platform_cpuid(void)
-{
- /* Setup leafs for the basic and extended range */
- leafs_basic = setup_cpuid_range(0x0);
- leafs_ext = setup_cpuid_range(0x80000000);
+ for_each_cpuid_range(range)
+ show_range(range);
}
static void __noreturn usage(int exit_code)
@@ -617,10 +632,13 @@ static void parse_options(int argc, char *argv[])
*/
int main(int argc, char *argv[])
{
+ struct cpuid_range *range;
+
parse_options(argc, argv);
/* Setup the cpuid leafs of current platform */
- setup_platform_cpuid();
+ for_each_cpuid_range(range)
+ setup_cpuid_range(range);
/* Read and parse the 'cpuid.csv' */
parse_text();
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 12/20] tools/x86/kcpuid: Extend CPUID index mask macro
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (10 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 11/20] tools/x86/kcpuid: Refactor CPUID range handling for future expansion Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 13/20] tools/x86/kcpuid: Consolidate index validity checks Ahmed S. Darwish
` (7 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Extend the CPUID index mask macro from 0x80000000 to 0xffff0000. This
accommodates the Transmeta (0x80860000) and Centaur (0xc0000000) index
ranges which will be later added.
This also automatically sets CPUID_FUNCTION_MASK to 0x0000ffff, which is
the actual correct value. Use that macro, instead of the 0xffff literal
where appropriate.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 00a3b7a8953c..0ba0d440482c 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -71,7 +71,7 @@ enum range_index {
RANGE_EXT = 0x80000000, /* Extended */
};
-#define CPUID_INDEX_MASK 0x80000000
+#define CPUID_INDEX_MASK 0xffff0000
#define CPUID_FUNCTION_MASK (~CPUID_INDEX_MASK)
struct cpuid_range {
@@ -173,7 +173,7 @@ static bool cpuid_store(struct cpuid_range *range, u32 f, int subleaf,
* Cut off vendor-prefix from CPUID function as we're using it as an
* index into ->funcs.
*/
- func = &range->funcs[f & 0xffff];
+ func = &range->funcs[f & CPUID_FUNCTION_MASK];
if (!func->leafs) {
func->leafs = malloc(sizeof(struct subleaf));
@@ -228,7 +228,7 @@ void setup_cpuid_range(struct cpuid_range *range)
cpuid(range->index, max_func, ebx, ecx, edx);
- idx_func = (max_func & 0xffff) + 1;
+ idx_func = (max_func & CPUID_FUNCTION_MASK) + 1;
range->funcs = malloc(sizeof(struct cpuid_func) * idx_func);
if (!range->funcs)
err(EXIT_FAILURE, NULL);
@@ -512,7 +512,7 @@ static inline struct cpuid_func *index_to_func(u32 index)
if (!range)
return NULL;
- func_idx = index & 0xffff;
+ func_idx = index & CPUID_FUNCTION_MASK;
if ((func_idx + 1) > (u32)range->nr)
return NULL;
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 13/20] tools/x86/kcpuid: Consolidate index validity checks
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (11 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 12/20] tools/x86/kcpuid: Extend CPUID index mask macro Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 14/20] tools/x86/kcpuid: Filter valid CPUID ranges Ahmed S. Darwish
` (6 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Let index_to_cpuid_range() return a CPUID range only if the passed index
is within a CPUID range's maximum supported function on the CPU.
Returning a CPUID range that is invalid on the CPU for the passed index
does not make sense.
This also avoids repeating the "function index is within CPUID range"
checks, both at setup_cpuid_range() and index_to_func().
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 21 +++++++++------------
1 file changed, 9 insertions(+), 12 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 0ba0d440482c..8f81fd66e8dd 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -101,10 +101,12 @@ static char *range_to_str(struct cpuid_range *range)
struct cpuid_range *index_to_cpuid_range(u32 index)
{
+ u32 func_idx = index & CPUID_FUNCTION_MASK;
+ u32 range_idx = index & CPUID_INDEX_MASK;
struct cpuid_range *range;
for_each_cpuid_range(range) {
- if (range->index == (index & CPUID_INDEX_MASK))
+ if (range->index == range_idx && (u32)range->nr > func_idx)
return range;
}
@@ -331,17 +333,16 @@ static void parse_line(char *line)
/* index/main-leaf */
index = strtoull(tokens[0], NULL, 0);
- /* Skip line parsing if it's not covered by known ranges */
+ /*
+ * Skip line parsing if the index is not covered by known-valid
+ * CPUID ranges on this CPU.
+ */
range = index_to_cpuid_range(index);
if (!range)
return;
- /* Skip line parsing for non-existing indexes */
- index &= CPUID_FUNCTION_MASK;
- if ((int)index >= range->nr)
- return;
-
/* Skip line parsing if the index CPUID output is all zero */
+ index &= CPUID_FUNCTION_MASK;
func = &range->funcs[index];
if (!func->nr)
return;
@@ -505,17 +506,13 @@ static void show_range(struct cpuid_range *range)
static inline struct cpuid_func *index_to_func(u32 index)
{
+ u32 func_idx = index & CPUID_FUNCTION_MASK;
struct cpuid_range *range;
- u32 func_idx;
range = index_to_cpuid_range(index);
if (!range)
return NULL;
- func_idx = index & CPUID_FUNCTION_MASK;
- if ((func_idx + 1) > (u32)range->nr)
- return NULL;
-
return &range->funcs[func_idx];
}
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 14/20] tools/x86/kcpuid: Filter valid CPUID ranges
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (12 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 13/20] tools/x86/kcpuid: Consolidate index validity checks Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 15/20] tools/x86/kcpuid: Define Transmeta and Centaur index ranges Ahmed S. Darwish
` (5 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Next commits will introduce vendor-specific CPUID ranges like Transmeta's
0x8086000 range and Centaur's 0xc0000000.
Initially explicit vendor detection was implemented, but it turned out to
be not strictly necessary. As Dave Hansen noted, even established tools
like cpuid(1) just tries all ranges indices, and see if the CPU responds
back with something sensible.
Do something similar at setup_cpuid_range(). Query the range's index,
and check the maximum range function value returned. If it's within an
expected interval of [range_index, range_index + MAX_RANGE_INDEX_OFFSET],
accept the range as valid and further query its leaves.
Set MAX_RANGE_INDEX_OFFSET to a heuristic of 0xff. That should be
sensible enough since all the ranges covered by x86-cpuid-db XML database
are:
0x00000000 0x00000023
0x40000000 0x40000000
0x80000000 0x80000026
0x80860000 0x80860007
0xc0000000 0xc0000001
At setup_cpuid_range(), if the range's returned maximum function was not
sane, mark it as invalid by setting its number of leaves, range->nr, to
zero.
Introduce the for_each_valid_cpuid_range() iterator instead of sprinkling
"range->nr != 0" checks throughout the code.
Suggested-by: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 37 +++++++++++++++++++++++++---------
1 file changed, 27 insertions(+), 10 deletions(-)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 8f81fd66e8dd..94a5926d00d0 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -96,8 +96,13 @@ static char *range_to_str(struct cpuid_range *range)
}
}
-#define for_each_cpuid_range(range) \
- for (unsigned int i = 0; i < ARRAY_SIZE(ranges) && ((range) = &ranges[i]); i++)
+#define __for_each_cpuid_range(range, __condition) \
+ for (unsigned int i = 0; \
+ i < ARRAY_SIZE(ranges) && ((range) = &ranges[i]) && (__condition); \
+ i++)
+
+#define for_each_valid_cpuid_range(range) __for_each_cpuid_range(range, (range)->nr != 0)
+#define for_each_cpuid_range(range) __for_each_cpuid_range(range, true)
struct cpuid_range *index_to_cpuid_range(u32 index)
{
@@ -105,7 +110,7 @@ struct cpuid_range *index_to_cpuid_range(u32 index)
u32 range_idx = index & CPUID_INDEX_MASK;
struct cpuid_range *range;
- for_each_cpuid_range(range) {
+ for_each_valid_cpuid_range(range) {
if (range->index == range_idx && (u32)range->nr > func_idx)
return range;
}
@@ -223,20 +228,32 @@ static void raw_dump_range(struct cpuid_range *range)
}
#define MAX_SUBLEAF_NUM 64
+#define MAX_RANGE_INDEX_OFFSET 0xff
void setup_cpuid_range(struct cpuid_range *range)
{
- u32 max_func, idx_func;
+ u32 max_func, range_funcs_sz;
u32 eax, ebx, ecx, edx;
cpuid(range->index, max_func, ebx, ecx, edx);
- idx_func = (max_func & CPUID_FUNCTION_MASK) + 1;
- range->funcs = malloc(sizeof(struct cpuid_func) * idx_func);
+ /*
+ * If the CPUID range's maximum function value is garbage, then it
+ * is not recognized by this CPU. Set the range's number of valid
+ * leaves to zero so that for_each_valid_cpu_range() can ignore it.
+ */
+ if (max_func < range->index || max_func > (range->index + MAX_RANGE_INDEX_OFFSET)) {
+ range->nr = 0;
+ return;
+ }
+
+ range->nr = (max_func & CPUID_FUNCTION_MASK) + 1;
+ range_funcs_sz = range->nr * sizeof(struct cpuid_func);
+
+ range->funcs = malloc(range_funcs_sz);
if (!range->funcs)
err(EXIT_FAILURE, NULL);
- range->nr = idx_func;
- memset(range->funcs, 0, sizeof(struct cpuid_func) * idx_func);
+ memset(range->funcs, 0, range_funcs_sz);
for (u32 f = range->index; f <= max_func; f++) {
u32 max_subleaf = MAX_SUBLEAF_NUM;
@@ -523,7 +540,7 @@ static void show_info(void)
if (show_raw) {
/* Show all of the raw output of 'cpuid' instr */
- for_each_cpuid_range(range)
+ for_each_valid_cpuid_range(range)
raw_dump_range(range);
return;
}
@@ -552,7 +569,7 @@ static void show_info(void)
}
printf("CPU features:\n=============\n\n");
- for_each_cpuid_range(range)
+ for_each_valid_cpuid_range(range)
show_range(range);
}
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 15/20] tools/x86/kcpuid: Define Transmeta and Centaur index ranges
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (13 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 14/20] tools/x86/kcpuid: Filter valid CPUID ranges Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 16/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.0 Ahmed S. Darwish
` (4 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Explicitly define the CPUID index ranges for Transmeta (0x80860000) and
Centaur/Zhaoxin (0xc0000000).
Without these explicit definitions, their respective CPUID indices would
be skipped during CSV bitfield parsing.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
tools/arch/x86/kcpuid/kcpuid.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/arch/x86/kcpuid/kcpuid.c b/tools/arch/x86/kcpuid/kcpuid.c
index 94a5926d00d0..12a4e245b15f 100644
--- a/tools/arch/x86/kcpuid/kcpuid.c
+++ b/tools/arch/x86/kcpuid/kcpuid.c
@@ -69,6 +69,8 @@ struct cpuid_func {
enum range_index {
RANGE_STD = 0, /* Standard */
RANGE_EXT = 0x80000000, /* Extended */
+ RANGE_TSM = 0x80860000, /* Transmeta */
+ RANGE_CTR = 0xc0000000, /* Centaur/Zhaoxin */
};
#define CPUID_INDEX_MASK 0xffff0000
@@ -85,6 +87,8 @@ struct cpuid_range {
static struct cpuid_range ranges[] = {
{ .index = RANGE_STD, },
{ .index = RANGE_EXT, },
+ { .index = RANGE_TSM, },
+ { .index = RANGE_CTR, },
};
static char *range_to_str(struct cpuid_range *range)
@@ -92,6 +96,8 @@ static char *range_to_str(struct cpuid_range *range)
switch (range->index) {
case RANGE_STD: return "Standard";
case RANGE_EXT: return "Extended";
+ case RANGE_TSM: return "Transmeta";
+ case RANGE_CTR: return "Centaur";
default: return NULL;
}
}
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 16/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.0
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (14 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 15/20] tools/x86/kcpuid: Define Transmeta and Centaur index ranges Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 17/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.1 Ahmed S. Darwish
` (3 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Update kcpuid's CSV file to version v2.0, as generated by x86-cpuid-db.
Summary of the v2.0 changes:
* Introduce the leaves:
- Leaf 0x00000003, Transmeta Processor serial number
- Leaf 0x80860000, Transmeta max leaf number + CPU vendor ID
- Leaf 0x80860001, Transmeta extended CPU information
- Leaf 0x80860002, Transmeta Code Morphing Software (CMS) enumeration
- Leaf 0x80860003 => 0x80860006, Transmeta CPU information string
- Leaf 0x80860007, Transmeta "live" CPU information
- Leaf 0xc0000000, Centaur/Zhaoxin's max leaf number
- Leaf 0xc0000001, Centaur/Zhaoxin's extended CPU features
* Add a 0x prefix for leaves 0x0 to 0x9. This maintains consistency with
the rest of the CSV entries.
* Add the new bitfields:
- Leaf 0x7: nmi_src, NMI-source reporting
- Leaf 0x80000001: e_base_type and e_mmx (Transmeta)
* Update the section headers for leaves 0x80000000 and 0x80000005 to
indicate that they are also valid for Transmeta.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
Link: https://gitlab.com/x86-cpuid.org/x86-cpuid-db/-/blob/v2.0/CHANGELOG.rst
---
Notes:
Leaf 0x3, being not unique to Transmeta, is handled at the generated
CSV file v2.3 update, later in this patch queue.
Leaf 0x80000001 EDX:23 bit, e_mmx, is also available on AMD. A bugfix
is already merged at x86-cpuid-db's -tip for that, and it will be part
of the project's upcoming v2.4 release.:
https://gitlab.com/x86-cpuid.org/x86-cpuid-db/-/commit/65fff25daa41
tools/arch/x86/kcpuid/cpuid.csv | 648 +++++++++++++++++++-------------
1 file changed, 382 insertions(+), 266 deletions(-)
diff --git a/tools/arch/x86/kcpuid/cpuid.csv b/tools/arch/x86/kcpuid/cpuid.csv
index d751eb8585d0..d0f7159f99ba 100644
--- a/tools/arch/x86/kcpuid/cpuid.csv
+++ b/tools/arch/x86/kcpuid/cpuid.csv
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: CC0-1.0
-# Generator: x86-cpuid-db v1.0
+# Generator: x86-cpuid-db v2.0
#
# Auto-generated file.
@@ -12,297 +12,306 @@
# Leaf 0H
# Maximum standard leaf number + CPU vendor string
- 0, 0, eax, 31:0, max_std_leaf , Highest cpuid standard leaf supported
- 0, 0, ebx, 31:0, cpu_vendorid_0 , CPU vendor ID string bytes 0 - 3
- 0, 0, ecx, 31:0, cpu_vendorid_2 , CPU vendor ID string bytes 8 - 11
- 0, 0, edx, 31:0, cpu_vendorid_1 , CPU vendor ID string bytes 4 - 7
+ 0x0, 0, eax, 31:0, max_std_leaf , Highest cpuid standard leaf supported
+ 0x0, 0, ebx, 31:0, cpu_vendorid_0 , CPU vendor ID string bytes 0 - 3
+ 0x0, 0, ecx, 31:0, cpu_vendorid_2 , CPU vendor ID string bytes 8 - 11
+ 0x0, 0, edx, 31:0, cpu_vendorid_1 , CPU vendor ID string bytes 4 - 7
# Leaf 1H
# CPU FMS (Family/Model/Stepping) + standard feature flags
- 1, 0, eax, 3:0, stepping , Stepping ID
- 1, 0, eax, 7:4, base_model , Base CPU model ID
- 1, 0, eax, 11:8, base_family_id , Base CPU family ID
- 1, 0, eax, 13:12, cpu_type , CPU type
- 1, 0, eax, 19:16, ext_model , Extended CPU model ID
- 1, 0, eax, 27:20, ext_family , Extended CPU family ID
- 1, 0, ebx, 7:0, brand_id , Brand index
- 1, 0, ebx, 15:8, clflush_size , CLFLUSH instruction cache line size
- 1, 0, ebx, 23:16, n_logical_cpu , Logical CPU (HW threads) count
- 1, 0, ebx, 31:24, local_apic_id , Initial local APIC physical ID
- 1, 0, ecx, 0, pni , Streaming SIMD Extensions 3 (SSE3)
- 1, 0, ecx, 1, pclmulqdq , PCLMULQDQ instruction support
- 1, 0, ecx, 2, dtes64 , 64-bit DS save area
- 1, 0, ecx, 3, monitor , MONITOR/MWAIT support
- 1, 0, ecx, 4, ds_cpl , CPL Qualified Debug Store
- 1, 0, ecx, 5, vmx , Virtual Machine Extensions
- 1, 0, ecx, 6, smx , Safer Mode Extensions
- 1, 0, ecx, 7, est , Enhanced Intel SpeedStep
- 1, 0, ecx, 8, tm2 , Thermal Monitor 2
- 1, 0, ecx, 9, ssse3 , Supplemental SSE3
- 1, 0, ecx, 10, cid , L1 Context ID
- 1, 0, ecx, 11, sdbg , Sillicon Debug
- 1, 0, ecx, 12, fma , FMA extensions using YMM state
- 1, 0, ecx, 13, cx16 , CMPXCHG16B instruction support
- 1, 0, ecx, 14, xtpr , xTPR Update Control
- 1, 0, ecx, 15, pdcm , Perfmon and Debug Capability
- 1, 0, ecx, 17, pcid , Process-context identifiers
- 1, 0, ecx, 18, dca , Direct Cache Access
- 1, 0, ecx, 19, sse4_1 , SSE4.1
- 1, 0, ecx, 20, sse4_2 , SSE4.2
- 1, 0, ecx, 21, x2apic , X2APIC support
- 1, 0, ecx, 22, movbe , MOVBE instruction support
- 1, 0, ecx, 23, popcnt , POPCNT instruction support
- 1, 0, ecx, 24, tsc_deadline_timer , APIC timer one-shot operation
- 1, 0, ecx, 25, aes , AES instructions
- 1, 0, ecx, 26, xsave , XSAVE (and related instructions) support
- 1, 0, ecx, 27, osxsave , XSAVE (and related instructions) are enabled by OS
- 1, 0, ecx, 28, avx , AVX instructions support
- 1, 0, ecx, 29, f16c , Half-precision floating-point conversion support
- 1, 0, ecx, 30, rdrand , RDRAND instruction support
- 1, 0, ecx, 31, guest_status , System is running as guest; (para-)virtualized system
- 1, 0, edx, 0, fpu , Floating-Point Unit on-chip (x87)
- 1, 0, edx, 1, vme , Virtual-8086 Mode Extensions
- 1, 0, edx, 2, de , Debugging Extensions
- 1, 0, edx, 3, pse , Page Size Extension
- 1, 0, edx, 4, tsc , Time Stamp Counter
- 1, 0, edx, 5, msr , Model-Specific Registers (RDMSR and WRMSR support)
- 1, 0, edx, 6, pae , Physical Address Extensions
- 1, 0, edx, 7, mce , Machine Check Exception
- 1, 0, edx, 8, cx8 , CMPXCHG8B instruction
- 1, 0, edx, 9, apic , APIC on-chip
- 1, 0, edx, 11, sep , SYSENTER, SYSEXIT, and associated MSRs
- 1, 0, edx, 12, mtrr , Memory Type Range Registers
- 1, 0, edx, 13, pge , Page Global Extensions
- 1, 0, edx, 14, mca , Machine Check Architecture
- 1, 0, edx, 15, cmov , Conditional Move Instruction
- 1, 0, edx, 16, pat , Page Attribute Table
- 1, 0, edx, 17, pse36 , Page Size Extension (36-bit)
- 1, 0, edx, 18, pn , Processor Serial Number
- 1, 0, edx, 19, clflush , CLFLUSH instruction
- 1, 0, edx, 21, dts , Debug Store
- 1, 0, edx, 22, acpi , Thermal monitor and clock control
- 1, 0, edx, 23, mmx , MMX instructions
- 1, 0, edx, 24, fxsr , FXSAVE and FXRSTOR instructions
- 1, 0, edx, 25, sse , SSE instructions
- 1, 0, edx, 26, sse2 , SSE2 instructions
- 1, 0, edx, 27, ss , Self Snoop
- 1, 0, edx, 28, ht , Hyper-threading
- 1, 0, edx, 29, tm , Thermal Monitor
- 1, 0, edx, 30, ia64 , Legacy IA-64 (Itanium) support bit, now resreved
- 1, 0, edx, 31, pbe , Pending Break Enable
+ 0x1, 0, eax, 3:0, stepping , Stepping ID
+ 0x1, 0, eax, 7:4, base_model , Base CPU model ID
+ 0x1, 0, eax, 11:8, base_family_id , Base CPU family ID
+ 0x1, 0, eax, 13:12, cpu_type , CPU type
+ 0x1, 0, eax, 19:16, ext_model , Extended CPU model ID
+ 0x1, 0, eax, 27:20, ext_family , Extended CPU family ID
+ 0x1, 0, ebx, 7:0, brand_id , Brand index
+ 0x1, 0, ebx, 15:8, clflush_size , CLFLUSH instruction cache line size
+ 0x1, 0, ebx, 23:16, n_logical_cpu , Logical CPU (HW threads) count
+ 0x1, 0, ebx, 31:24, local_apic_id , Initial local APIC physical ID
+ 0x1, 0, ecx, 0, pni , Streaming SIMD Extensions 3 (SSE3)
+ 0x1, 0, ecx, 1, pclmulqdq , PCLMULQDQ instruction support
+ 0x1, 0, ecx, 2, dtes64 , 64-bit DS save area
+ 0x1, 0, ecx, 3, monitor , MONITOR/MWAIT support
+ 0x1, 0, ecx, 4, ds_cpl , CPL Qualified Debug Store
+ 0x1, 0, ecx, 5, vmx , Virtual Machine Extensions
+ 0x1, 0, ecx, 6, smx , Safer Mode Extensions
+ 0x1, 0, ecx, 7, est , Enhanced Intel SpeedStep
+ 0x1, 0, ecx, 8, tm2 , Thermal Monitor 2
+ 0x1, 0, ecx, 9, ssse3 , Supplemental SSE3
+ 0x1, 0, ecx, 10, cid , L1 Context ID
+ 0x1, 0, ecx, 11, sdbg , Sillicon Debug
+ 0x1, 0, ecx, 12, fma , FMA extensions using YMM state
+ 0x1, 0, ecx, 13, cx16 , CMPXCHG16B instruction support
+ 0x1, 0, ecx, 14, xtpr , xTPR Update Control
+ 0x1, 0, ecx, 15, pdcm , Perfmon and Debug Capability
+ 0x1, 0, ecx, 17, pcid , Process-context identifiers
+ 0x1, 0, ecx, 18, dca , Direct Cache Access
+ 0x1, 0, ecx, 19, sse4_1 , SSE4.1
+ 0x1, 0, ecx, 20, sse4_2 , SSE4.2
+ 0x1, 0, ecx, 21, x2apic , X2APIC support
+ 0x1, 0, ecx, 22, movbe , MOVBE instruction support
+ 0x1, 0, ecx, 23, popcnt , POPCNT instruction support
+ 0x1, 0, ecx, 24, tsc_deadline_timer , APIC timer one-shot operation
+ 0x1, 0, ecx, 25, aes , AES instructions
+ 0x1, 0, ecx, 26, xsave , XSAVE (and related instructions) support
+ 0x1, 0, ecx, 27, osxsave , XSAVE (and related instructions) are enabled by OS
+ 0x1, 0, ecx, 28, avx , AVX instructions support
+ 0x1, 0, ecx, 29, f16c , Half-precision floating-point conversion support
+ 0x1, 0, ecx, 30, rdrand , RDRAND instruction support
+ 0x1, 0, ecx, 31, guest_status , System is running as guest; (para-)virtualized system
+ 0x1, 0, edx, 0, fpu , Floating-Point Unit on-chip (x87)
+ 0x1, 0, edx, 1, vme , Virtual-8086 Mode Extensions
+ 0x1, 0, edx, 2, de , Debugging Extensions
+ 0x1, 0, edx, 3, pse , Page Size Extension
+ 0x1, 0, edx, 4, tsc , Time Stamp Counter
+ 0x1, 0, edx, 5, msr , Model-Specific Registers (RDMSR and WRMSR support)
+ 0x1, 0, edx, 6, pae , Physical Address Extensions
+ 0x1, 0, edx, 7, mce , Machine Check Exception
+ 0x1, 0, edx, 8, cx8 , CMPXCHG8B instruction
+ 0x1, 0, edx, 9, apic , APIC on-chip
+ 0x1, 0, edx, 11, sep , SYSENTER, SYSEXIT, and associated MSRs
+ 0x1, 0, edx, 12, mtrr , Memory Type Range Registers
+ 0x1, 0, edx, 13, pge , Page Global Extensions
+ 0x1, 0, edx, 14, mca , Machine Check Architecture
+ 0x1, 0, edx, 15, cmov , Conditional Move Instruction
+ 0x1, 0, edx, 16, pat , Page Attribute Table
+ 0x1, 0, edx, 17, pse36 , Page Size Extension (36-bit)
+ 0x1, 0, edx, 18, pn , Processor Serial Number
+ 0x1, 0, edx, 19, clflush , CLFLUSH instruction
+ 0x1, 0, edx, 21, dts , Debug Store
+ 0x1, 0, edx, 22, acpi , Thermal monitor and clock control
+ 0x1, 0, edx, 23, mmx , MMX instructions
+ 0x1, 0, edx, 24, fxsr , FXSAVE and FXRSTOR instructions
+ 0x1, 0, edx, 25, sse , SSE instructions
+ 0x1, 0, edx, 26, sse2 , SSE2 instructions
+ 0x1, 0, edx, 27, ss , Self Snoop
+ 0x1, 0, edx, 28, ht , Hyper-threading
+ 0x1, 0, edx, 29, tm , Thermal Monitor
+ 0x1, 0, edx, 30, ia64 , Legacy IA-64 (Itanium) support bit, now resreved
+ 0x1, 0, edx, 31, pbe , Pending Break Enable
# Leaf 2H
# Intel cache and TLB information one-byte descriptors
- 2, 0, eax, 7:0, iteration_count , Number of times this CPUD leaf must be queried
- 2, 0, eax, 15:8, desc1 , Descriptor #1
- 2, 0, eax, 23:16, desc2 , Descriptor #2
- 2, 0, eax, 30:24, desc3 , Descriptor #3
- 2, 0, eax, 31, eax_invalid , Descriptors 1-3 are invalid if set
- 2, 0, ebx, 7:0, desc4 , Descriptor #4
- 2, 0, ebx, 15:8, desc5 , Descriptor #5
- 2, 0, ebx, 23:16, desc6 , Descriptor #6
- 2, 0, ebx, 30:24, desc7 , Descriptor #7
- 2, 0, ebx, 31, ebx_invalid , Descriptors 4-7 are invalid if set
- 2, 0, ecx, 7:0, desc8 , Descriptor #8
- 2, 0, ecx, 15:8, desc9 , Descriptor #9
- 2, 0, ecx, 23:16, desc10 , Descriptor #10
- 2, 0, ecx, 30:24, desc11 , Descriptor #11
- 2, 0, ecx, 31, ecx_invalid , Descriptors 8-11 are invalid if set
- 2, 0, edx, 7:0, desc12 , Descriptor #12
- 2, 0, edx, 15:8, desc13 , Descriptor #13
- 2, 0, edx, 23:16, desc14 , Descriptor #14
- 2, 0, edx, 30:24, desc15 , Descriptor #15
- 2, 0, edx, 31, edx_invalid , Descriptors 12-15 are invalid if set
+ 0x2, 0, eax, 7:0, iteration_count , Number of times this CPUD leaf must be queried
+ 0x2, 0, eax, 15:8, desc1 , Descriptor #1
+ 0x2, 0, eax, 23:16, desc2 , Descriptor #2
+ 0x2, 0, eax, 30:24, desc3 , Descriptor #3
+ 0x2, 0, eax, 31, eax_invalid , Descriptors 1-3 are invalid if set
+ 0x2, 0, ebx, 7:0, desc4 , Descriptor #4
+ 0x2, 0, ebx, 15:8, desc5 , Descriptor #5
+ 0x2, 0, ebx, 23:16, desc6 , Descriptor #6
+ 0x2, 0, ebx, 30:24, desc7 , Descriptor #7
+ 0x2, 0, ebx, 31, ebx_invalid , Descriptors 4-7 are invalid if set
+ 0x2, 0, ecx, 7:0, desc8 , Descriptor #8
+ 0x2, 0, ecx, 15:8, desc9 , Descriptor #9
+ 0x2, 0, ecx, 23:16, desc10 , Descriptor #10
+ 0x2, 0, ecx, 30:24, desc11 , Descriptor #11
+ 0x2, 0, ecx, 31, ecx_invalid , Descriptors 8-11 are invalid if set
+ 0x2, 0, edx, 7:0, desc12 , Descriptor #12
+ 0x2, 0, edx, 15:8, desc13 , Descriptor #13
+ 0x2, 0, edx, 23:16, desc14 , Descriptor #14
+ 0x2, 0, edx, 30:24, desc15 , Descriptor #15
+ 0x2, 0, edx, 31, edx_invalid , Descriptors 12-15 are invalid if set
+
+# Leaf 3H
+# Transmeta Processor Serial Number (PSN)
+
+ 0x3, 0, eax, 31:0, cpu_psn_0 , Processor Serial Number bytes 0 - 3
+ 0x3, 0, ebx, 31:0, cpu_psn_1 , Processor Serial Number bytes 4 - 7
+ 0x3, 0, ecx, 31:0, cpu_psn_2 , Processor Serial Number bytes 8 - 11
+ 0x3, 0, edx, 31:0, cpu_psn_3 , Processor Serial Number bytes 12 - 15
# Leaf 4H
# Intel deterministic cache parameters
- 4, 31:0, eax, 4:0, cache_type , Cache type field
- 4, 31:0, eax, 7:5, cache_level , Cache level (1-based)
- 4, 31:0, eax, 8, cache_self_init , Self-initialializing cache level
- 4, 31:0, eax, 9, fully_associative , Fully-associative cache
- 4, 31:0, eax, 25:14, num_threads_sharing , Number logical CPUs sharing this cache
- 4, 31:0, eax, 31:26, num_cores_on_die , Number of cores in the physical package
- 4, 31:0, ebx, 11:0, cache_linesize , System coherency line size (0-based)
- 4, 31:0, ebx, 21:12, cache_npartitions , Physical line partitions (0-based)
- 4, 31:0, ebx, 31:22, cache_nways , Ways of associativity (0-based)
- 4, 31:0, ecx, 30:0, cache_nsets , Cache number of sets (0-based)
- 4, 31:0, edx, 0, wbinvd_rll_no_guarantee, WBINVD/INVD not guaranteed for Remote Lower-Level caches
- 4, 31:0, edx, 1, ll_inclusive , Cache is inclusive of Lower-Level caches
- 4, 31:0, edx, 2, complex_indexing , Not a direct-mapped cache (complex function)
+ 0x4, 31:0, eax, 4:0, cache_type , Cache type field
+ 0x4, 31:0, eax, 7:5, cache_level , Cache level (1-based)
+ 0x4, 31:0, eax, 8, cache_self_init , Self-initialializing cache level
+ 0x4, 31:0, eax, 9, fully_associative , Fully-associative cache
+ 0x4, 31:0, eax, 25:14, num_threads_sharing , Number logical CPUs sharing this cache
+ 0x4, 31:0, eax, 31:26, num_cores_on_die , Number of cores in the physical package
+ 0x4, 31:0, ebx, 11:0, cache_linesize , System coherency line size (0-based)
+ 0x4, 31:0, ebx, 21:12, cache_npartitions , Physical line partitions (0-based)
+ 0x4, 31:0, ebx, 31:22, cache_nways , Ways of associativity (0-based)
+ 0x4, 31:0, ecx, 30:0, cache_nsets , Cache number of sets (0-based)
+ 0x4, 31:0, edx, 0, wbinvd_rll_no_guarantee, WBINVD/INVD not guaranteed for Remote Lower-Level caches
+ 0x4, 31:0, edx, 1, ll_inclusive , Cache is inclusive of Lower-Level caches
+ 0x4, 31:0, edx, 2, complex_indexing , Not a direct-mapped cache (complex function)
# Leaf 5H
# MONITOR/MWAIT instructions enumeration
- 5, 0, eax, 15:0, min_mon_size , Smallest monitor-line size, in bytes
- 5, 0, ebx, 15:0, max_mon_size , Largest monitor-line size, in bytes
- 5, 0, ecx, 0, mwait_ext , Enumeration of MONITOR/MWAIT extensions is supported
- 5, 0, ecx, 1, mwait_irq_break , Interrupts as a break-event for MWAIT is supported
- 5, 0, edx, 3:0, n_c0_substates , Number of C0 sub C-states supported using MWAIT
- 5, 0, edx, 7:4, n_c1_substates , Number of C1 sub C-states supported using MWAIT
- 5, 0, edx, 11:8, n_c2_substates , Number of C2 sub C-states supported using MWAIT
- 5, 0, edx, 15:12, n_c3_substates , Number of C3 sub C-states supported using MWAIT
- 5, 0, edx, 19:16, n_c4_substates , Number of C4 sub C-states supported using MWAIT
- 5, 0, edx, 23:20, n_c5_substates , Number of C5 sub C-states supported using MWAIT
- 5, 0, edx, 27:24, n_c6_substates , Number of C6 sub C-states supported using MWAIT
- 5, 0, edx, 31:28, n_c7_substates , Number of C7 sub C-states supported using MWAIT
+ 0x5, 0, eax, 15:0, min_mon_size , Smallest monitor-line size, in bytes
+ 0x5, 0, ebx, 15:0, max_mon_size , Largest monitor-line size, in bytes
+ 0x5, 0, ecx, 0, mwait_ext , Enumeration of MONITOR/MWAIT extensions is supported
+ 0x5, 0, ecx, 1, mwait_irq_break , Interrupts as a break-event for MWAIT is supported
+ 0x5, 0, edx, 3:0, n_c0_substates , Number of C0 sub C-states supported using MWAIT
+ 0x5, 0, edx, 7:4, n_c1_substates , Number of C1 sub C-states supported using MWAIT
+ 0x5, 0, edx, 11:8, n_c2_substates , Number of C2 sub C-states supported using MWAIT
+ 0x5, 0, edx, 15:12, n_c3_substates , Number of C3 sub C-states supported using MWAIT
+ 0x5, 0, edx, 19:16, n_c4_substates , Number of C4 sub C-states supported using MWAIT
+ 0x5, 0, edx, 23:20, n_c5_substates , Number of C5 sub C-states supported using MWAIT
+ 0x5, 0, edx, 27:24, n_c6_substates , Number of C6 sub C-states supported using MWAIT
+ 0x5, 0, edx, 31:28, n_c7_substates , Number of C7 sub C-states supported using MWAIT
# Leaf 6H
# Thermal and Power Management enumeration
- 6, 0, eax, 0, dtherm , Digital temprature sensor
- 6, 0, eax, 1, turbo_boost , Intel Turbo Boost
- 6, 0, eax, 2, arat , Always-Running APIC Timer (not affected by p-state)
- 6, 0, eax, 4, pln , Power Limit Notification (PLN) event
- 6, 0, eax, 5, ecmd , Clock modulation duty cycle extension
- 6, 0, eax, 6, pts , Package thermal management
- 6, 0, eax, 7, hwp , HWP (Hardware P-states) base registers are supported
- 6, 0, eax, 8, hwp_notify , HWP notification (IA32_HWP_INTERRUPT MSR)
- 6, 0, eax, 9, hwp_act_window , HWP activity window (IA32_HWP_REQUEST[bits 41:32]) supported
- 6, 0, eax, 10, hwp_epp , HWP Energy Performance Preference
- 6, 0, eax, 11, hwp_pkg_req , HWP Package Level Request
- 6, 0, eax, 13, hdc_base_regs , HDC base registers are supported
- 6, 0, eax, 14, turbo_boost_3_0 , Intel Turbo Boost Max 3.0
- 6, 0, eax, 15, hwp_capabilities , HWP Highest Performance change
- 6, 0, eax, 16, hwp_peci_override , HWP PECI override
- 6, 0, eax, 17, hwp_flexible , Flexible HWP
- 6, 0, eax, 18, hwp_fast , IA32_HWP_REQUEST MSR fast access mode
- 6, 0, eax, 19, hfi , HW_FEEDBACK MSRs supported
- 6, 0, eax, 20, hwp_ignore_idle , Ignoring idle logical CPU HWP req is supported
- 6, 0, eax, 23, thread_director , Intel thread director support
- 6, 0, eax, 24, therm_interrupt_bit25 , IA32_THERM_INTERRUPT MSR bit 25 is supported
- 6, 0, ebx, 3:0, n_therm_thresholds , Digital thermometer thresholds
- 6, 0, ecx, 0, aperfmperf , MPERF/APERF MSRs (effective frequency interface)
- 6, 0, ecx, 3, epb , IA32_ENERGY_PERF_BIAS MSR support
- 6, 0, ecx, 15:8, thrd_director_nclasses , Number of classes, Intel thread director
- 6, 0, edx, 0, perfcap_reporting , Performance capability reporting
- 6, 0, edx, 1, encap_reporting , Energy efficiency capability reporting
- 6, 0, edx, 11:8, feedback_sz , HW feedback interface struct size, in 4K pages
- 6, 0, edx, 31:16, this_lcpu_hwfdbk_idx , This logical CPU index @ HW feedback struct, 0-based
+ 0x6, 0, eax, 0, dtherm , Digital temprature sensor
+ 0x6, 0, eax, 1, turbo_boost , Intel Turbo Boost
+ 0x6, 0, eax, 2, arat , Always-Running APIC Timer (not affected by p-state)
+ 0x6, 0, eax, 4, pln , Power Limit Notification (PLN) event
+ 0x6, 0, eax, 5, ecmd , Clock modulation duty cycle extension
+ 0x6, 0, eax, 6, pts , Package thermal management
+ 0x6, 0, eax, 7, hwp , HWP (Hardware P-states) base registers are supported
+ 0x6, 0, eax, 8, hwp_notify , HWP notification (IA32_HWP_INTERRUPT MSR)
+ 0x6, 0, eax, 9, hwp_act_window , HWP activity window (IA32_HWP_REQUEST[bits 41:32]) supported
+ 0x6, 0, eax, 10, hwp_epp , HWP Energy Performance Preference
+ 0x6, 0, eax, 11, hwp_pkg_req , HWP Package Level Request
+ 0x6, 0, eax, 13, hdc_base_regs , HDC base registers are supported
+ 0x6, 0, eax, 14, turbo_boost_3_0 , Intel Turbo Boost Max 3.0
+ 0x6, 0, eax, 15, hwp_capabilities , HWP Highest Performance change
+ 0x6, 0, eax, 16, hwp_peci_override , HWP PECI override
+ 0x6, 0, eax, 17, hwp_flexible , Flexible HWP
+ 0x6, 0, eax, 18, hwp_fast , IA32_HWP_REQUEST MSR fast access mode
+ 0x6, 0, eax, 19, hfi , HW_FEEDBACK MSRs supported
+ 0x6, 0, eax, 20, hwp_ignore_idle , Ignoring idle logical CPU HWP req is supported
+ 0x6, 0, eax, 23, thread_director , Intel thread director support
+ 0x6, 0, eax, 24, therm_interrupt_bit25 , IA32_THERM_INTERRUPT MSR bit 25 is supported
+ 0x6, 0, ebx, 3:0, n_therm_thresholds , Digital thermometer thresholds
+ 0x6, 0, ecx, 0, aperfmperf , MPERF/APERF MSRs (effective frequency interface)
+ 0x6, 0, ecx, 3, epb , IA32_ENERGY_PERF_BIAS MSR support
+ 0x6, 0, ecx, 15:8, thrd_director_nclasses , Number of classes, Intel thread director
+ 0x6, 0, edx, 0, perfcap_reporting , Performance capability reporting
+ 0x6, 0, edx, 1, encap_reporting , Energy efficiency capability reporting
+ 0x6, 0, edx, 11:8, feedback_sz , HW feedback interface struct size, in 4K pages
+ 0x6, 0, edx, 31:16, this_lcpu_hwfdbk_idx , This logical CPU index @ HW feedback struct, 0-based
# Leaf 7H
# Extended CPU features enumeration
- 7, 0, eax, 31:0, leaf7_n_subleaves , Number of cpuid 0x7 subleaves
- 7, 0, ebx, 0, fsgsbase , FSBASE/GSBASE read/write support
- 7, 0, ebx, 1, tsc_adjust , IA32_TSC_ADJUST MSR supported
- 7, 0, ebx, 2, sgx , Intel SGX (Software Guard Extensions)
- 7, 0, ebx, 3, bmi1 , Bit manipulation extensions group 1
- 7, 0, ebx, 4, hle , Hardware Lock Elision
- 7, 0, ebx, 5, avx2 , AVX2 instruction set
- 7, 0, ebx, 6, fdp_excptn_only , FPU Data Pointer updated only on x87 exceptions
- 7, 0, ebx, 7, smep , Supervisor Mode Execution Protection
- 7, 0, ebx, 8, bmi2 , Bit manipulation extensions group 2
- 7, 0, ebx, 9, erms , Enhanced REP MOVSB/STOSB
- 7, 0, ebx, 10, invpcid , INVPCID instruction (Invalidate Processor Context ID)
- 7, 0, ebx, 11, rtm , Intel restricted transactional memory
- 7, 0, ebx, 12, cqm , Intel RDT-CMT / AMD Platform-QoS cache monitoring
- 7, 0, ebx, 13, zero_fcs_fds , Deprecated FPU CS/DS (stored as zero)
- 7, 0, ebx, 14, mpx , Intel memory protection extensions
- 7, 0, ebx, 15, rdt_a , Intel RDT / AMD Platform-QoS Enforcemeent
- 7, 0, ebx, 16, avx512f , AVX-512 foundation instructions
- 7, 0, ebx, 17, avx512dq , AVX-512 double/quadword instructions
- 7, 0, ebx, 18, rdseed , RDSEED instruction
- 7, 0, ebx, 19, adx , ADCX/ADOX instructions
- 7, 0, ebx, 20, smap , Supervisor mode access prevention
- 7, 0, ebx, 21, avx512ifma , AVX-512 integer fused multiply add
- 7, 0, ebx, 23, clflushopt , CLFLUSHOPT instruction
- 7, 0, ebx, 24, clwb , CLWB instruction
- 7, 0, ebx, 25, intel_pt , Intel processor trace
- 7, 0, ebx, 26, avx512pf , AVX-512 prefetch instructions
- 7, 0, ebx, 27, avx512er , AVX-512 exponent/reciprocal instrs
- 7, 0, ebx, 28, avx512cd , AVX-512 conflict detection instrs
- 7, 0, ebx, 29, sha_ni , SHA/SHA256 instructions
- 7, 0, ebx, 30, avx512bw , AVX-512 BW (byte/word granular) instructions
- 7, 0, ebx, 31, avx512vl , AVX-512 VL (128/256 vector length) extensions
- 7, 0, ecx, 0, prefetchwt1 , PREFETCHWT1 (Intel Xeon Phi only)
- 7, 0, ecx, 1, avx512vbmi , AVX-512 Vector byte manipulation instrs
- 7, 0, ecx, 2, umip , User mode instruction protection
- 7, 0, ecx, 3, pku , Protection keys for user-space
- 7, 0, ecx, 4, ospke , OS protection keys enable
- 7, 0, ecx, 5, waitpkg , WAITPKG instructions
- 7, 0, ecx, 6, avx512_vbmi2 , AVX-512 vector byte manipulation instrs group 2
- 7, 0, ecx, 7, cet_ss , CET shadow stack features
- 7, 0, ecx, 8, gfni , Galois field new instructions
- 7, 0, ecx, 9, vaes , Vector AES instrs
- 7, 0, ecx, 10, vpclmulqdq , VPCLMULQDQ 256-bit instruction support
- 7, 0, ecx, 11, avx512_vnni , Vector neural network instructions
- 7, 0, ecx, 12, avx512_bitalg , AVX-512 bit count/shiffle
- 7, 0, ecx, 13, tme , Intel total memory encryption
- 7, 0, ecx, 14, avx512_vpopcntdq , AVX-512: POPCNT for vectors of DW/QW
- 7, 0, ecx, 16, la57 , 57-bit linear addreses (five-level paging)
- 7, 0, ecx, 21:17, mawau_val_lm , BNDLDX/BNDSTX MAWAU value in 64-bit mode
- 7, 0, ecx, 22, rdpid , RDPID instruction
- 7, 0, ecx, 23, key_locker , Intel key locker support
- 7, 0, ecx, 24, bus_lock_detect , OS bus-lock detection
- 7, 0, ecx, 25, cldemote , CLDEMOTE instruction
- 7, 0, ecx, 27, movdiri , MOVDIRI instruction
- 7, 0, ecx, 28, movdir64b , MOVDIR64B instruction
- 7, 0, ecx, 29, enqcmd , Enqueue stores supported (ENQCMD{,S})
- 7, 0, ecx, 30, sgx_lc , Intel SGX launch configuration
- 7, 0, ecx, 31, pks , Protection keys for supervisor-mode pages
- 7, 0, edx, 1, sgx_keys , Intel SGX attestation services
- 7, 0, edx, 2, avx512_4vnniw , AVX-512 neural network instructions
- 7, 0, edx, 3, avx512_4fmaps , AVX-512 multiply accumulation single precision
- 7, 0, edx, 4, fsrm , Fast short REP MOV
- 7, 0, edx, 5, uintr , CPU supports user interrupts
- 7, 0, edx, 8, avx512_vp2intersect , VP2INTERSECT{D,Q} instructions
- 7, 0, edx, 9, srdbs_ctrl , SRBDS mitigation MSR available
- 7, 0, edx, 10, md_clear , VERW MD_CLEAR microcode support
- 7, 0, edx, 11, rtm_always_abort , XBEGIN (RTM transaction) always aborts
- 7, 0, edx, 13, tsx_force_abort , MSR TSX_FORCE_ABORT, RTM_ABORT bit, supported
- 7, 0, edx, 14, serialize , SERIALIZE instruction
- 7, 0, edx, 15, hybrid_cpu , The CPU is identified as a 'hybrid part'
- 7, 0, edx, 16, tsxldtrk , TSX suspend/resume load address tracking
- 7, 0, edx, 18, pconfig , PCONFIG instruction
- 7, 0, edx, 19, arch_lbr , Intel architectural LBRs
- 7, 0, edx, 20, ibt , CET indirect branch tracking
- 7, 0, edx, 22, amx_bf16 , AMX-BF16: tile bfloat16 support
- 7, 0, edx, 23, avx512_fp16 , AVX-512 FP16 instructions
- 7, 0, edx, 24, amx_tile , AMX-TILE: tile architecture support
- 7, 0, edx, 25, amx_int8 , AMX-INT8: tile 8-bit integer support
- 7, 0, edx, 26, spec_ctrl , Speculation Control (IBRS/IBPB: indirect branch restrictions)
- 7, 0, edx, 27, intel_stibp , Single thread indirect branch predictors
- 7, 0, edx, 28, flush_l1d , FLUSH L1D cache: IA32_FLUSH_CMD MSR
- 7, 0, edx, 29, arch_capabilities , Intel IA32_ARCH_CAPABILITIES MSR
- 7, 0, edx, 30, core_capabilities , IA32_CORE_CAPABILITIES MSR
- 7, 0, edx, 31, spec_ctrl_ssbd , Speculative store bypass disable
- 7, 1, eax, 4, avx_vnni , AVX-VNNI instructions
- 7, 1, eax, 5, avx512_bf16 , AVX-512 bFloat16 instructions
- 7, 1, eax, 6, lass , Linear address space separation
- 7, 1, eax, 7, cmpccxadd , CMPccXADD instructions
- 7, 1, eax, 8, arch_perfmon_ext , ArchPerfmonExt: CPUID leaf 0x23 is supported
- 7, 1, eax, 10, fzrm , Fast zero-length REP MOVSB
- 7, 1, eax, 11, fsrs , Fast short REP STOSB
- 7, 1, eax, 12, fsrc , Fast Short REP CMPSB/SCASB
- 7, 1, eax, 17, fred , FRED: Flexible return and event delivery transitions
- 7, 1, eax, 18, lkgs , LKGS: Load 'kernel' (userspace) GS
- 7, 1, eax, 19, wrmsrns , WRMSRNS instr (WRMSR-non-serializing)
- 7, 1, eax, 21, amx_fp16 , AMX-FP16: FP16 tile operations
- 7, 1, eax, 22, hreset , History reset support
- 7, 1, eax, 23, avx_ifma , Integer fused multiply add
- 7, 1, eax, 26, lam , Linear address masking
- 7, 1, eax, 27, rd_wr_msrlist , RDMSRLIST/WRMSRLIST instructions
- 7, 1, ebx, 0, intel_ppin , Protected processor inventory number (PPIN{,_CTL} MSRs)
- 7, 1, edx, 4, avx_vnni_int8 , AVX-VNNI-INT8 instructions
- 7, 1, edx, 5, avx_ne_convert , AVX-NE-CONVERT instructions
- 7, 1, edx, 8, amx_complex , AMX-COMPLEX instructions (starting from Granite Rapids)
- 7, 1, edx, 14, prefetchit_0_1 , PREFETCHIT0/1 instructions
- 7, 1, edx, 18, cet_sss , CET supervisor shadow stacks safe to use
- 7, 2, edx, 0, intel_psfd , Intel predictive store forward disable
- 7, 2, edx, 1, ipred_ctrl , MSR bits IA32_SPEC_CTRL.IPRED_DIS_{U,S}
- 7, 2, edx, 2, rrsba_ctrl , MSR bits IA32_SPEC_CTRL.RRSBA_DIS_{U,S}
- 7, 2, edx, 3, ddp_ctrl , MSR bit IA32_SPEC_CTRL.DDPD_U
- 7, 2, edx, 4, bhi_ctrl , MSR bit IA32_SPEC_CTRL.BHI_DIS_S
- 7, 2, edx, 5, mcdt_no , MCDT mitigation not needed
- 7, 2, edx, 6, uclock_disable , UC-lock disable is supported
+ 0x7, 0, eax, 31:0, leaf7_n_subleaves , Number of cpuid 0x7 subleaves
+ 0x7, 0, ebx, 0, fsgsbase , FSBASE/GSBASE read/write support
+ 0x7, 0, ebx, 1, tsc_adjust , IA32_TSC_ADJUST MSR supported
+ 0x7, 0, ebx, 2, sgx , Intel SGX (Software Guard Extensions)
+ 0x7, 0, ebx, 3, bmi1 , Bit manipulation extensions group 1
+ 0x7, 0, ebx, 4, hle , Hardware Lock Elision
+ 0x7, 0, ebx, 5, avx2 , AVX2 instruction set
+ 0x7, 0, ebx, 6, fdp_excptn_only , FPU Data Pointer updated only on x87 exceptions
+ 0x7, 0, ebx, 7, smep , Supervisor Mode Execution Protection
+ 0x7, 0, ebx, 8, bmi2 , Bit manipulation extensions group 2
+ 0x7, 0, ebx, 9, erms , Enhanced REP MOVSB/STOSB
+ 0x7, 0, ebx, 10, invpcid , INVPCID instruction (Invalidate Processor Context ID)
+ 0x7, 0, ebx, 11, rtm , Intel restricted transactional memory
+ 0x7, 0, ebx, 12, cqm , Intel RDT-CMT / AMD Platform-QoS cache monitoring
+ 0x7, 0, ebx, 13, zero_fcs_fds , Deprecated FPU CS/DS (stored as zero)
+ 0x7, 0, ebx, 14, mpx , Intel memory protection extensions
+ 0x7, 0, ebx, 15, rdt_a , Intel RDT / AMD Platform-QoS Enforcemeent
+ 0x7, 0, ebx, 16, avx512f , AVX-512 foundation instructions
+ 0x7, 0, ebx, 17, avx512dq , AVX-512 double/quadword instructions
+ 0x7, 0, ebx, 18, rdseed , RDSEED instruction
+ 0x7, 0, ebx, 19, adx , ADCX/ADOX instructions
+ 0x7, 0, ebx, 20, smap , Supervisor mode access prevention
+ 0x7, 0, ebx, 21, avx512ifma , AVX-512 integer fused multiply add
+ 0x7, 0, ebx, 23, clflushopt , CLFLUSHOPT instruction
+ 0x7, 0, ebx, 24, clwb , CLWB instruction
+ 0x7, 0, ebx, 25, intel_pt , Intel processor trace
+ 0x7, 0, ebx, 26, avx512pf , AVX-512 prefetch instructions
+ 0x7, 0, ebx, 27, avx512er , AVX-512 exponent/reciprocal instrs
+ 0x7, 0, ebx, 28, avx512cd , AVX-512 conflict detection instrs
+ 0x7, 0, ebx, 29, sha_ni , SHA/SHA256 instructions
+ 0x7, 0, ebx, 30, avx512bw , AVX-512 BW (byte/word granular) instructions
+ 0x7, 0, ebx, 31, avx512vl , AVX-512 VL (128/256 vector length) extensions
+ 0x7, 0, ecx, 0, prefetchwt1 , PREFETCHWT1 (Intel Xeon Phi only)
+ 0x7, 0, ecx, 1, avx512vbmi , AVX-512 Vector byte manipulation instrs
+ 0x7, 0, ecx, 2, umip , User mode instruction protection
+ 0x7, 0, ecx, 3, pku , Protection keys for user-space
+ 0x7, 0, ecx, 4, ospke , OS protection keys enable
+ 0x7, 0, ecx, 5, waitpkg , WAITPKG instructions
+ 0x7, 0, ecx, 6, avx512_vbmi2 , AVX-512 vector byte manipulation instrs group 2
+ 0x7, 0, ecx, 7, cet_ss , CET shadow stack features
+ 0x7, 0, ecx, 8, gfni , Galois field new instructions
+ 0x7, 0, ecx, 9, vaes , Vector AES instrs
+ 0x7, 0, ecx, 10, vpclmulqdq , VPCLMULQDQ 256-bit instruction support
+ 0x7, 0, ecx, 11, avx512_vnni , Vector neural network instructions
+ 0x7, 0, ecx, 12, avx512_bitalg , AVX-512 bit count/shiffle
+ 0x7, 0, ecx, 13, tme , Intel total memory encryption
+ 0x7, 0, ecx, 14, avx512_vpopcntdq , AVX-512: POPCNT for vectors of DW/QW
+ 0x7, 0, ecx, 16, la57 , 57-bit linear addreses (five-level paging)
+ 0x7, 0, ecx, 21:17, mawau_val_lm , BNDLDX/BNDSTX MAWAU value in 64-bit mode
+ 0x7, 0, ecx, 22, rdpid , RDPID instruction
+ 0x7, 0, ecx, 23, key_locker , Intel key locker support
+ 0x7, 0, ecx, 24, bus_lock_detect , OS bus-lock detection
+ 0x7, 0, ecx, 25, cldemote , CLDEMOTE instruction
+ 0x7, 0, ecx, 27, movdiri , MOVDIRI instruction
+ 0x7, 0, ecx, 28, movdir64b , MOVDIR64B instruction
+ 0x7, 0, ecx, 29, enqcmd , Enqueue stores supported (ENQCMD{,S})
+ 0x7, 0, ecx, 30, sgx_lc , Intel SGX launch configuration
+ 0x7, 0, ecx, 31, pks , Protection keys for supervisor-mode pages
+ 0x7, 0, edx, 1, sgx_keys , Intel SGX attestation services
+ 0x7, 0, edx, 2, avx512_4vnniw , AVX-512 neural network instructions
+ 0x7, 0, edx, 3, avx512_4fmaps , AVX-512 multiply accumulation single precision
+ 0x7, 0, edx, 4, fsrm , Fast short REP MOV
+ 0x7, 0, edx, 5, uintr , CPU supports user interrupts
+ 0x7, 0, edx, 8, avx512_vp2intersect , VP2INTERSECT{D,Q} instructions
+ 0x7, 0, edx, 9, srdbs_ctrl , SRBDS mitigation MSR available
+ 0x7, 0, edx, 10, md_clear , VERW MD_CLEAR microcode support
+ 0x7, 0, edx, 11, rtm_always_abort , XBEGIN (RTM transaction) always aborts
+ 0x7, 0, edx, 13, tsx_force_abort , MSR TSX_FORCE_ABORT, RTM_ABORT bit, supported
+ 0x7, 0, edx, 14, serialize , SERIALIZE instruction
+ 0x7, 0, edx, 15, hybrid_cpu , The CPU is identified as a 'hybrid part'
+ 0x7, 0, edx, 16, tsxldtrk , TSX suspend/resume load address tracking
+ 0x7, 0, edx, 18, pconfig , PCONFIG instruction
+ 0x7, 0, edx, 19, arch_lbr , Intel architectural LBRs
+ 0x7, 0, edx, 20, ibt , CET indirect branch tracking
+ 0x7, 0, edx, 22, amx_bf16 , AMX-BF16: tile bfloat16 support
+ 0x7, 0, edx, 23, avx512_fp16 , AVX-512 FP16 instructions
+ 0x7, 0, edx, 24, amx_tile , AMX-TILE: tile architecture support
+ 0x7, 0, edx, 25, amx_int8 , AMX-INT8: tile 8-bit integer support
+ 0x7, 0, edx, 26, spec_ctrl , Speculation Control (IBRS/IBPB: indirect branch restrictions)
+ 0x7, 0, edx, 27, intel_stibp , Single thread indirect branch predictors
+ 0x7, 0, edx, 28, flush_l1d , FLUSH L1D cache: IA32_FLUSH_CMD MSR
+ 0x7, 0, edx, 29, arch_capabilities , Intel IA32_ARCH_CAPABILITIES MSR
+ 0x7, 0, edx, 30, core_capabilities , IA32_CORE_CAPABILITIES MSR
+ 0x7, 0, edx, 31, spec_ctrl_ssbd , Speculative store bypass disable
+ 0x7, 1, eax, 4, avx_vnni , AVX-VNNI instructions
+ 0x7, 1, eax, 5, avx512_bf16 , AVX-512 bFloat16 instructions
+ 0x7, 1, eax, 6, lass , Linear address space separation
+ 0x7, 1, eax, 7, cmpccxadd , CMPccXADD instructions
+ 0x7, 1, eax, 8, arch_perfmon_ext , ArchPerfmonExt: CPUID leaf 0x23 is supported
+ 0x7, 1, eax, 10, fzrm , Fast zero-length REP MOVSB
+ 0x7, 1, eax, 11, fsrs , Fast short REP STOSB
+ 0x7, 1, eax, 12, fsrc , Fast Short REP CMPSB/SCASB
+ 0x7, 1, eax, 17, fred , FRED: Flexible return and event delivery transitions
+ 0x7, 1, eax, 18, lkgs , LKGS: Load 'kernel' (userspace) GS
+ 0x7, 1, eax, 19, wrmsrns , WRMSRNS instr (WRMSR-non-serializing)
+ 0x7, 1, eax, 20, nmi_src , NMI-source reporting with FRED event data
+ 0x7, 1, eax, 21, amx_fp16 , AMX-FP16: FP16 tile operations
+ 0x7, 1, eax, 22, hreset , History reset support
+ 0x7, 1, eax, 23, avx_ifma , Integer fused multiply add
+ 0x7, 1, eax, 26, lam , Linear address masking
+ 0x7, 1, eax, 27, rd_wr_msrlist , RDMSRLIST/WRMSRLIST instructions
+ 0x7, 1, ebx, 0, intel_ppin , Protected processor inventory number (PPIN{,_CTL} MSRs)
+ 0x7, 1, edx, 4, avx_vnni_int8 , AVX-VNNI-INT8 instructions
+ 0x7, 1, edx, 5, avx_ne_convert , AVX-NE-CONVERT instructions
+ 0x7, 1, edx, 8, amx_complex , AMX-COMPLEX instructions (starting from Granite Rapids)
+ 0x7, 1, edx, 14, prefetchit_0_1 , PREFETCHIT0/1 instructions
+ 0x7, 1, edx, 18, cet_sss , CET supervisor shadow stacks safe to use
+ 0x7, 2, edx, 0, intel_psfd , Intel predictive store forward disable
+ 0x7, 2, edx, 1, ipred_ctrl , MSR bits IA32_SPEC_CTRL.IPRED_DIS_{U,S}
+ 0x7, 2, edx, 2, rrsba_ctrl , MSR bits IA32_SPEC_CTRL.RRSBA_DIS_{U,S}
+ 0x7, 2, edx, 3, ddp_ctrl , MSR bit IA32_SPEC_CTRL.DDPD_U
+ 0x7, 2, edx, 4, bhi_ctrl , MSR bit IA32_SPEC_CTRL.BHI_DIS_S
+ 0x7, 2, edx, 5, mcdt_no , MCDT mitigation not needed
+ 0x7, 2, edx, 6, uclock_disable , UC-lock disable is supported
# Leaf 9H
# Intel DCA (Direct Cache Access) enumeration
- 9, 0, eax, 0, dca_enabled_in_bios , DCA is enabled in BIOS
+ 0x9, 0, eax, 0, dca_enabled_in_bios , DCA is enabled in BIOS
# Leaf AH
# Intel PMU (Performance Monitoring Unit) enumeration
@@ -623,7 +632,7 @@
0x40000000, 0, edx, 31:0, hypervisor_id_2 , Hypervisor ID string bytes 8 - 11
# Leaf 80000000H
-# Maximum extended leaf number + CPU vendor string (AMD)
+# Maximum extended leaf number + AMD/Transmeta CPU vendor string
0x80000000, 0, eax, 31:0, max_ext_leaf , Maximum extended cpuid leaf supported
0x80000000, 0, ebx, 31:0, cpu_vendorid_0 , Vendor ID string bytes 0 - 3
@@ -636,6 +645,7 @@
0x80000001, 0, eax, 3:0, e_stepping_id , Stepping ID
0x80000001, 0, eax, 7:4, e_base_model , Base processor model
0x80000001, 0, eax, 11:8, e_base_family , Base processor family
+0x80000001, 0, eax, 13:12, e_base_type , Base processor type (Transmeta)
0x80000001, 0, eax, 19:16, e_ext_model , Extended processor model
0x80000001, 0, eax, 27:20, e_ext_family , Extended processor family
0x80000001, 0, ebx, 15:0, brand_id , Brand ID
@@ -687,6 +697,7 @@
0x80000001, 0, edx, 19, mp , Out-of-spec AMD Multiprocessing bit
0x80000001, 0, edx, 20, nx , No-execute page protection
0x80000001, 0, edx, 22, mmxext , AMD MMX extensions
+0x80000001, 0, edx, 23, e_mmx , MMX instructions (Transmeta)
0x80000001, 0, edx, 24, e_fxsr , FXSAVE and FXRSTOR instructions
0x80000001, 0, edx, 25, fxsr_opt , FXSAVE and FXRSTOR optimizations
0x80000001, 0, edx, 26, pdpe1gb , 1-GB large page support
@@ -720,7 +731,7 @@
0x80000004, 0, edx, 31:0, cpu_brandid_11 , CPU brand ID string, bytes 44 - 47
# Leaf 80000005H
-# AMD L1 cache and L1 TLB enumeration
+# AMD/Transmeta L1 cache and L1 TLB enumeration
0x80000005, 0, eax, 7:0, l1_itlb_2m_4m_nentries , L1 ITLB #entires, 2M and 4M pages
0x80000005, 0, eax, 15:8, l1_itlb_2m_4m_assoc , L1 ITLB associativity, 2M and 4M pages
@@ -1051,3 +1062,108 @@
0x80000026, 3:0, ecx, 7:0, domain_level , This domain level (subleaf ID)
0x80000026, 3:0, ecx, 15:8, domain_type , This domain type
0x80000026, 3:0, edx, 31:0, x2apic_id , x2APIC ID of current logical CPU
+
+# Leaf 80860000H
+# Maximum Transmeta leaf number + CPU vendor ID string
+
+0x80860000, 0, eax, 31:0, max_tra_leaf , Maximum supported Transmeta leaf number
+0x80860000, 0, ebx, 31:0, cpu_vendorid_0 , Transmeta Vendor ID string bytes 0 - 3
+0x80860000, 0, ecx, 31:0, cpu_vendorid_2 , Transmeta Vendor ID string bytes 8 - 11
+0x80860000, 0, edx, 31:0, cpu_vendorid_1 , Transmeta Vendor ID string bytes 4 - 7
+
+# Leaf 80860001H
+# Transmeta extended CPU information
+
+0x80860001, 0, eax, 3:0, stepping , Stepping ID
+0x80860001, 0, eax, 7:4, base_model , Base CPU model ID
+0x80860001, 0, eax, 11:8, base_family_id , Base CPU family ID
+0x80860001, 0, eax, 13:12, cpu_type , CPU type
+0x80860001, 0, ebx, 7:0, cpu_rev_mask_minor , CPU revision ID, mask minor
+0x80860001, 0, ebx, 15:8, cpu_rev_mask_major , CPU revision ID, mask major
+0x80860001, 0, ebx, 23:16, cpu_rev_minor , CPU revision ID, minor
+0x80860001, 0, ebx, 31:24, cpu_rev_major , CPU revision ID, major
+0x80860001, 0, ecx, 31:0, cpu_base_mhz , CPU nominal frequency, in MHz
+0x80860001, 0, edx, 0, recovery , Recovery CMS is active (after bad flush)
+0x80860001, 0, edx, 1, longrun , LongRun power management capabilities
+0x80860001, 0, edx, 3, lrti , LongRun Table Interface
+
+# Leaf 80860002H
+# Transmeta Code Morphing Software (CMS) enumeration
+
+0x80860002, 0, eax, 31:0, cpu_rev_id , CPU revision ID
+0x80860002, 0, ebx, 7:0, cms_rev_mask_2 , CMS revision ID, mask component 2
+0x80860002, 0, ebx, 15:8, cms_rev_mask_1 , CMS revision ID, mask component 1
+0x80860002, 0, ebx, 23:16, cms_rev_minor , CMS revision ID, minor
+0x80860002, 0, ebx, 31:24, cms_rev_major , CMS revision ID, major
+0x80860002, 0, ecx, 31:0, cms_rev_mask_3 , CMS revision ID, mask component 3
+
+# Leaf 80860003H
+# Transmeta CPU information string, bytes 0 - 15
+
+0x80860003, 0, eax, 31:0, cpu_info_0 , CPU info string bytes 0 - 3
+0x80860003, 0, ebx, 31:0, cpu_info_1 , CPU info string bytes 4 - 7
+0x80860003, 0, ecx, 31:0, cpu_info_2 , CPU info string bytes 8 - 11
+0x80860003, 0, edx, 31:0, cpu_info_3 , CPU info string bytes 12 - 15
+
+# Leaf 80860004H
+# Transmeta CPU information string, bytes 16 - 31
+
+0x80860004, 0, eax, 31:0, cpu_info_4 , CPU info string bytes 16 - 19
+0x80860004, 0, ebx, 31:0, cpu_info_5 , CPU info string bytes 20 - 23
+0x80860004, 0, ecx, 31:0, cpu_info_6 , CPU info string bytes 24 - 27
+0x80860004, 0, edx, 31:0, cpu_info_7 , CPU info string bytes 28 - 31
+
+# Leaf 80860005H
+# Transmeta CPU information string, bytes 32 - 47
+
+0x80860005, 0, eax, 31:0, cpu_info_8 , CPU info string bytes 32 - 35
+0x80860005, 0, ebx, 31:0, cpu_info_9 , CPU info string bytes 36 - 39
+0x80860005, 0, ecx, 31:0, cpu_info_10 , CPU info string bytes 40 - 43
+0x80860005, 0, edx, 31:0, cpu_info_11 , CPU info string bytes 44 - 47
+
+# Leaf 80860006H
+# Transmeta CPU information string, bytes 48 - 63
+
+0x80860006, 0, eax, 31:0, cpu_info_12 , CPU info string bytes 48 - 51
+0x80860006, 0, ebx, 31:0, cpu_info_13 , CPU info string bytes 52 - 55
+0x80860006, 0, ecx, 31:0, cpu_info_14 , CPU info string bytes 56 - 59
+0x80860006, 0, edx, 31:0, cpu_info_15 , CPU info string bytes 60 - 63
+
+# Leaf 80860007H
+# Transmeta live CPU information
+
+0x80860007, 0, eax, 31:0, cpu_cur_mhz , Current CPU frequency, in MHz
+0x80860007, 0, ebx, 31:0, cpu_cur_voltage , Current CPU voltage, in millivolts
+0x80860007, 0, ecx, 31:0, cpu_cur_perf_pctg , Current CPU performance percentage, 0 - 100d
+0x80860007, 0, edx, 31:0, cpu_cur_gate_delay , Current CPU gate delay, in femtoseconds
+
+# Leaf C0000000H
+# Maximum Centaur/Zhaoxin leaf number
+
+0xc0000000, 0, eax, 31:0, max_cntr_leaf , Maximum Centaur/Zhaoxin leaf number
+
+# Leaf C0000001H
+# Centaur/Zhaoxin extended CPU features
+
+0xc0000001, 0, edx, 0, ccs_sm2 , CCS SM2 instructions
+0xc0000001, 0, edx, 1, ccs_sm2_en , CCS SM2 enabled
+0xc0000001, 0, edx, 2, xstore , Random Number Generator
+0xc0000001, 0, edx, 3, xstore_en , RNG enabled
+0xc0000001, 0, edx, 4, ccs_sm3_sm4 , CCS SM3 and SM4 instructions
+0xc0000001, 0, edx, 5, ccs_sm3_sm4_en , CCS SM3/SM4 enabled
+0xc0000001, 0, edx, 6, ace , Advanced Cryptography Engine
+0xc0000001, 0, edx, 7, ace_en , ACE enabled
+0xc0000001, 0, edx, 8, ace2 , Advanced Cryptography Engine v2
+0xc0000001, 0, edx, 9, ace2_en , ACE v2 enabled
+0xc0000001, 0, edx, 10, phe , PadLock Hash Engine
+0xc0000001, 0, edx, 11, phe_en , PHE enabled
+0xc0000001, 0, edx, 12, pmm , PadLock Montgomery Multiplier
+0xc0000001, 0, edx, 13, pmm_en , PMM enabled
+0xc0000001, 0, edx, 16, parallax , Parallax auto adjust processor voltage
+0xc0000001, 0, edx, 17, parallax_en , Parallax enabled
+0xc0000001, 0, edx, 20, tm3 , Thermal Monitor v3
+0xc0000001, 0, edx, 21, tm3_en , TM v3 enabled
+0xc0000001, 0, edx, 25, phe2 , PadLock Hash Engine v2 (SHA384/SHA512)
+0xc0000001, 0, edx, 26, phe2_en , PHE v2 enabled
+0xc0000001, 0, edx, 27, rsa , RSA instructions (XMODEXP/MONTMUL2)
+0xc0000001, 0, edx, 28, rsa_en , RSA instructions enabled
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 17/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.1
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (15 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 16/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.0 Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 18/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.2 Ahmed S. Darwish
` (2 subsequent siblings)
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Update kcpuid's CSV file to version 2.1, as generated by x86-cpuid-db.
Summary of the v2.1 changes:
* Use a standardized style for all x86 trademarks, registers, opcodes,
byte units, hexadecimal digits, and x86 technical terms. This was
enforced by a number of x86-specific hunspell(5) dictionary and affix
files at the x86-cpuid-db project's CI pipeline.
* Expand abbreviated terms that might be OK in code but not in official
listings (e.g., "addr", "instr", "reg", "virt", etc.)
* Add new Zen5 SoC bits to leaf 0x80000020 and leaf 0x80000021.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
Link: https://gitlab.com/x86-cpuid.org/x86-cpuid-db/-/blob/v2.1/CHANGELOG.rst
---
tools/arch/x86/kcpuid/cpuid.csv | 171 +++++++++++++++++---------------
1 file changed, 91 insertions(+), 80 deletions(-)
diff --git a/tools/arch/x86/kcpuid/cpuid.csv b/tools/arch/x86/kcpuid/cpuid.csv
index d0f7159f99ba..0f9c11208674 100644
--- a/tools/arch/x86/kcpuid/cpuid.csv
+++ b/tools/arch/x86/kcpuid/cpuid.csv
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: CC0-1.0
-# Generator: x86-cpuid-db v2.0
+# Generator: x86-cpuid-db v2.1
#
# Auto-generated file.
@@ -28,7 +28,7 @@
0x1, 0, eax, 27:20, ext_family , Extended CPU family ID
0x1, 0, ebx, 7:0, brand_id , Brand index
0x1, 0, ebx, 15:8, clflush_size , CLFLUSH instruction cache line size
- 0x1, 0, ebx, 23:16, n_logical_cpu , Logical CPU (HW threads) count
+ 0x1, 0, ebx, 23:16, n_logical_cpu , Logical CPU count
0x1, 0, ebx, 31:24, local_apic_id , Initial local APIC physical ID
0x1, 0, ecx, 0, pni , Streaming SIMD Extensions 3 (SSE3)
0x1, 0, ecx, 1, pclmulqdq , PCLMULQDQ instruction support
@@ -41,7 +41,7 @@
0x1, 0, ecx, 8, tm2 , Thermal Monitor 2
0x1, 0, ecx, 9, ssse3 , Supplemental SSE3
0x1, 0, ecx, 10, cid , L1 Context ID
- 0x1, 0, ecx, 11, sdbg , Sillicon Debug
+ 0x1, 0, ecx, 11, sdbg , Silicon Debug
0x1, 0, ecx, 12, fma , FMA extensions using YMM state
0x1, 0, ecx, 13, cx16 , CMPXCHG16B instruction support
0x1, 0, ecx, 14, xtpr , xTPR Update Control
@@ -89,13 +89,13 @@
0x1, 0, edx, 27, ss , Self Snoop
0x1, 0, edx, 28, ht , Hyper-threading
0x1, 0, edx, 29, tm , Thermal Monitor
- 0x1, 0, edx, 30, ia64 , Legacy IA-64 (Itanium) support bit, now resreved
+ 0x1, 0, edx, 30, ia64 , Legacy IA-64 (Itanium) support bit, now reserved
0x1, 0, edx, 31, pbe , Pending Break Enable
# Leaf 2H
# Intel cache and TLB information one-byte descriptors
- 0x2, 0, eax, 7:0, iteration_count , Number of times this CPUD leaf must be queried
+ 0x2, 0, eax, 7:0, iteration_count , Number of times this leaf must be queried
0x2, 0, eax, 15:8, desc1 , Descriptor #1
0x2, 0, eax, 23:16, desc2 , Descriptor #2
0x2, 0, eax, 30:24, desc3 , Descriptor #3
@@ -129,7 +129,7 @@
0x4, 31:0, eax, 4:0, cache_type , Cache type field
0x4, 31:0, eax, 7:5, cache_level , Cache level (1-based)
- 0x4, 31:0, eax, 8, cache_self_init , Self-initialializing cache level
+ 0x4, 31:0, eax, 8, cache_self_init , Self-initializing cache level
0x4, 31:0, eax, 9, fully_associative , Fully-associative cache
0x4, 31:0, eax, 25:14, num_threads_sharing , Number logical CPUs sharing this cache
0x4, 31:0, eax, 31:26, num_cores_on_die , Number of cores in the physical package
@@ -160,7 +160,7 @@
# Leaf 6H
# Thermal and Power Management enumeration
- 0x6, 0, eax, 0, dtherm , Digital temprature sensor
+ 0x6, 0, eax, 0, dtherm , Digital temperature sensor
0x6, 0, eax, 1, turbo_boost , Intel Turbo Boost
0x6, 0, eax, 2, arat , Always-Running APIC Timer (not affected by p-state)
0x6, 0, eax, 4, pln , Power Limit Notification (PLN) event
@@ -187,8 +187,8 @@
0x6, 0, ecx, 15:8, thrd_director_nclasses , Number of classes, Intel thread director
0x6, 0, edx, 0, perfcap_reporting , Performance capability reporting
0x6, 0, edx, 1, encap_reporting , Energy efficiency capability reporting
- 0x6, 0, edx, 11:8, feedback_sz , HW feedback interface struct size, in 4K pages
- 0x6, 0, edx, 31:16, this_lcpu_hwfdbk_idx , This logical CPU index @ HW feedback struct, 0-based
+ 0x6, 0, edx, 11:8, feedback_sz , Feedback interface structure size, in 4K pages
+ 0x6, 0, edx, 31:16, this_lcpu_hwfdbk_idx , This logical CPU hardware feedback interface index
# Leaf 7H
# Extended CPU features enumeration
@@ -209,7 +209,7 @@
0x7, 0, ebx, 12, cqm , Intel RDT-CMT / AMD Platform-QoS cache monitoring
0x7, 0, ebx, 13, zero_fcs_fds , Deprecated FPU CS/DS (stored as zero)
0x7, 0, ebx, 14, mpx , Intel memory protection extensions
- 0x7, 0, ebx, 15, rdt_a , Intel RDT / AMD Platform-QoS Enforcemeent
+ 0x7, 0, ebx, 15, rdt_a , Intel RDT / AMD Platform-QoS Enforcement
0x7, 0, ebx, 16, avx512f , AVX-512 foundation instructions
0x7, 0, ebx, 17, avx512dq , AVX-512 double/quadword instructions
0x7, 0, ebx, 18, rdseed , RDSEED instruction
@@ -220,27 +220,27 @@
0x7, 0, ebx, 24, clwb , CLWB instruction
0x7, 0, ebx, 25, intel_pt , Intel processor trace
0x7, 0, ebx, 26, avx512pf , AVX-512 prefetch instructions
- 0x7, 0, ebx, 27, avx512er , AVX-512 exponent/reciprocal instrs
- 0x7, 0, ebx, 28, avx512cd , AVX-512 conflict detection instrs
+ 0x7, 0, ebx, 27, avx512er , AVX-512 exponent/reciprocal instructions
+ 0x7, 0, ebx, 28, avx512cd , AVX-512 conflict detection instructions
0x7, 0, ebx, 29, sha_ni , SHA/SHA256 instructions
- 0x7, 0, ebx, 30, avx512bw , AVX-512 BW (byte/word granular) instructions
+ 0x7, 0, ebx, 30, avx512bw , AVX-512 byte/word instructions
0x7, 0, ebx, 31, avx512vl , AVX-512 VL (128/256 vector length) extensions
0x7, 0, ecx, 0, prefetchwt1 , PREFETCHWT1 (Intel Xeon Phi only)
- 0x7, 0, ecx, 1, avx512vbmi , AVX-512 Vector byte manipulation instrs
+ 0x7, 0, ecx, 1, avx512vbmi , AVX-512 Vector byte manipulation instructions
0x7, 0, ecx, 2, umip , User mode instruction protection
0x7, 0, ecx, 3, pku , Protection keys for user-space
0x7, 0, ecx, 4, ospke , OS protection keys enable
0x7, 0, ecx, 5, waitpkg , WAITPKG instructions
- 0x7, 0, ecx, 6, avx512_vbmi2 , AVX-512 vector byte manipulation instrs group 2
+ 0x7, 0, ecx, 6, avx512_vbmi2 , AVX-512 vector byte manipulation instructions group 2
0x7, 0, ecx, 7, cet_ss , CET shadow stack features
0x7, 0, ecx, 8, gfni , Galois field new instructions
- 0x7, 0, ecx, 9, vaes , Vector AES instrs
+ 0x7, 0, ecx, 9, vaes , Vector AES instructions
0x7, 0, ecx, 10, vpclmulqdq , VPCLMULQDQ 256-bit instruction support
0x7, 0, ecx, 11, avx512_vnni , Vector neural network instructions
- 0x7, 0, ecx, 12, avx512_bitalg , AVX-512 bit count/shiffle
+ 0x7, 0, ecx, 12, avx512_bitalg , AVX-512 bitwise algorithms
0x7, 0, ecx, 13, tme , Intel total memory encryption
- 0x7, 0, ecx, 14, avx512_vpopcntdq , AVX-512: POPCNT for vectors of DW/QW
- 0x7, 0, ecx, 16, la57 , 57-bit linear addreses (five-level paging)
+ 0x7, 0, ecx, 14, avx512_vpopcntdq , AVX-512: POPCNT for vectors of DWORD/QWORD
+ 0x7, 0, ecx, 16, la57 , 57-bit linear addresses (five-level paging)
0x7, 0, ecx, 21:17, mawau_val_lm , BNDLDX/BNDSTX MAWAU value in 64-bit mode
0x7, 0, ecx, 22, rdpid , RDPID instruction
0x7, 0, ecx, 23, key_locker , Intel key locker support
@@ -278,7 +278,7 @@
0x7, 0, edx, 30, core_capabilities , IA32_CORE_CAPABILITIES MSR
0x7, 0, edx, 31, spec_ctrl_ssbd , Speculative store bypass disable
0x7, 1, eax, 4, avx_vnni , AVX-VNNI instructions
- 0x7, 1, eax, 5, avx512_bf16 , AVX-512 bFloat16 instructions
+ 0x7, 1, eax, 5, avx512_bf16 , AVX-512 bfloat16 instructions
0x7, 1, eax, 6, lass , Linear address space separation
0x7, 1, eax, 7, cmpccxadd , CMPccXADD instructions
0x7, 1, eax, 8, arch_perfmon_ext , ArchPerfmonExt: CPUID leaf 0x23 is supported
@@ -287,7 +287,7 @@
0x7, 1, eax, 12, fsrc , Fast Short REP CMPSB/SCASB
0x7, 1, eax, 17, fred , FRED: Flexible return and event delivery transitions
0x7, 1, eax, 18, lkgs , LKGS: Load 'kernel' (userspace) GS
- 0x7, 1, eax, 19, wrmsrns , WRMSRNS instr (WRMSR-non-serializing)
+ 0x7, 1, eax, 19, wrmsrns , WRMSRNS instruction (WRMSR-non-serializing)
0x7, 1, eax, 20, nmi_src , NMI-source reporting with FRED event data
0x7, 1, eax, 21, amx_fp16 , AMX-FP16: FP16 tile operations
0x7, 1, eax, 22, hreset , History reset support
@@ -348,18 +348,18 @@
0xd, 0, eax, 0, xcr0_x87 , XCR0.X87 (bit 0) supported
0xd, 0, eax, 1, xcr0_sse , XCR0.SEE (bit 1) supported
0xd, 0, eax, 2, xcr0_avx , XCR0.AVX (bit 2) supported
- 0xd, 0, eax, 3, xcr0_mpx_bndregs , XCR0.BNDREGS (bit 3) supported (MPX BND0-BND3 regs)
- 0xd, 0, eax, 4, xcr0_mpx_bndcsr , XCR0.BNDCSR (bit 4) supported (MPX BNDCFGU/BNDSTATUS regs)
- 0xd, 0, eax, 5, xcr0_avx512_opmask , XCR0.OPMASK (bit 5) supported (AVX-512 k0-k7 regs)
- 0xd, 0, eax, 6, xcr0_avx512_zmm_hi256 , XCR0.ZMM_Hi256 (bit 6) supported (AVX-512 ZMM0->ZMM7/15 regs)
- 0xd, 0, eax, 7, xcr0_avx512_hi16_zmm , XCR0.HI16_ZMM (bit 7) supported (AVX-512 ZMM16->ZMM31 regs)
- 0xd, 0, eax, 9, xcr0_pkru , XCR0.PKRU (bit 9) supported (XSAVE PKRU reg)
- 0xd, 0, eax, 11, xcr0_cet_u , AMD XCR0.CET_U (bit 11) supported (CET supervisor state)
- 0xd, 0, eax, 12, xcr0_cet_s , AMD XCR0.CET_S (bit 12) support (CET user state)
+ 0xd, 0, eax, 3, xcr0_mpx_bndregs , XCR0.BNDREGS (bit 3) supported (MPX BND0-BND3 registers)
+ 0xd, 0, eax, 4, xcr0_mpx_bndcsr , XCR0.BNDCSR (bit 4) supported (MPX BNDCFGU/BNDSTATUS registers)
+ 0xd, 0, eax, 5, xcr0_avx512_opmask , XCR0.OPMASK (bit 5) supported (AVX-512 k0-k7 registers)
+ 0xd, 0, eax, 6, xcr0_avx512_zmm_hi256 , XCR0.ZMM_Hi256 (bit 6) supported (AVX-512 ZMM0->ZMM7/15 registers)
+ 0xd, 0, eax, 7, xcr0_avx512_hi16_zmm , XCR0.HI16_ZMM (bit 7) supported (AVX-512 ZMM16->ZMM31 registers)
+ 0xd, 0, eax, 9, xcr0_pkru , XCR0.PKRU (bit 9) supported (XSAVE PKRU registers)
+ 0xd, 0, eax, 11, xcr0_cet_u , XCR0.CET_U (bit 11) supported (CET user state)
+ 0xd, 0, eax, 12, xcr0_cet_s , XCR0.CET_S (bit 12) supported (CET supervisor state)
0xd, 0, eax, 17, xcr0_tileconfig , XCR0.TILECONFIG (bit 17) supported (AMX can manage TILECONFIG)
0xd, 0, eax, 18, xcr0_tiledata , XCR0.TILEDATA (bit 18) supported (AMX can manage TILEDATA)
- 0xd, 0, ebx, 31:0, xsave_sz_xcr0_enabled , XSAVE/XRSTR area byte size, for XCR0 enabled features
- 0xd, 0, ecx, 31:0, xsave_sz_max , XSAVE/XRSTR area max byte size, all CPU features
+ 0xd, 0, ebx, 31:0, xsave_sz_xcr0_enabled , XSAVE/XRSTOR area byte size, for XCR0 enabled features
+ 0xd, 0, ecx, 31:0, xsave_sz_max , XSAVE/XRSTOR area max byte size, all CPU features
0xd, 0, edx, 30, xcr0_lwp , AMD XCR0.LWP (bit 62) supported (Light-weight Profiling)
0xd, 1, eax, 0, xsaveopt , XSAVEOPT instruction
0xd, 1, eax, 1, xsavec , XSAVEC instruction
@@ -378,7 +378,7 @@
0xd, 63:2, eax, 31:0, xsave_sz , Size of save area for subleaf-N feature, in bytes
0xd, 63:2, ebx, 31:0, xsave_offset , Offset of save area for subleaf-N feature, in bytes
0xd, 63:2, ecx, 0, is_xss_bit , Subleaf N describes an XSS bit, otherwise XCR0 bit
- 0xd, 63:2, ecx, 1, compacted_xsave_64byte_aligned, When compacted, subleaf-N feature xsave area is 64-byte aligned
+ 0xd, 63:2, ecx, 1, compacted_xsave_64byte_aligned, When compacted, subleaf-N feature XSAVE area is 64-byte aligned
# Leaf FH
# Intel RDT / AMD PQoS resource monitoring
@@ -435,17 +435,17 @@
0x12, 1, ecx, 0, xfrm_x87 , Enclave XFRM.X87 (bit 0) supported
0x12, 1, ecx, 1, xfrm_sse , Enclave XFRM.SEE (bit 1) supported
0x12, 1, ecx, 2, xfrm_avx , Enclave XFRM.AVX (bit 2) supported
- 0x12, 1, ecx, 3, xfrm_mpx_bndregs , Enclave XFRM.BNDREGS (bit 3) supported (MPX BND0-BND3 regs)
- 0x12, 1, ecx, 4, xfrm_mpx_bndcsr , Enclave XFRM.BNDCSR (bit 4) supported (MPX BNDCFGU/BNDSTATUS regs)
- 0x12, 1, ecx, 5, xfrm_avx512_opmask , Enclave XFRM.OPMASK (bit 5) supported (AVX-512 k0-k7 regs)
- 0x12, 1, ecx, 6, xfrm_avx512_zmm_hi256 , Enclave XFRM.ZMM_Hi256 (bit 6) supported (AVX-512 ZMM0->ZMM7/15 regs)
- 0x12, 1, ecx, 7, xfrm_avx512_hi16_zmm , Enclave XFRM.HI16_ZMM (bit 7) supported (AVX-512 ZMM16->ZMM31 regs)
- 0x12, 1, ecx, 9, xfrm_pkru , Enclave XFRM.PKRU (bit 9) supported (XSAVE PKRU reg)
+ 0x12, 1, ecx, 3, xfrm_mpx_bndregs , Enclave XFRM.BNDREGS (bit 3) supported (MPX BND0-BND3 registers)
+ 0x12, 1, ecx, 4, xfrm_mpx_bndcsr , Enclave XFRM.BNDCSR (bit 4) supported (MPX BNDCFGU/BNDSTATUS registers)
+ 0x12, 1, ecx, 5, xfrm_avx512_opmask , Enclave XFRM.OPMASK (bit 5) supported (AVX-512 k0-k7 registers)
+ 0x12, 1, ecx, 6, xfrm_avx512_zmm_hi256 , Enclave XFRM.ZMM_Hi256 (bit 6) supported (AVX-512 ZMM0->ZMM7/15 registers)
+ 0x12, 1, ecx, 7, xfrm_avx512_hi16_zmm , Enclave XFRM.HI16_ZMM (bit 7) supported (AVX-512 ZMM16->ZMM31 registers)
+ 0x12, 1, ecx, 9, xfrm_pkru , Enclave XFRM.PKRU (bit 9) supported (XSAVE PKRU registers)
0x12, 1, ecx, 17, xfrm_tileconfig , Enclave XFRM.TILECONFIG (bit 17) supported (AMX can manage TILECONFIG)
0x12, 1, ecx, 18, xfrm_tiledata , Enclave XFRM.TILEDATA (bit 18) supported (AMX can manage TILEDATA)
0x12, 31:2, eax, 3:0, subleaf_type , Subleaf type (dictates output layout)
- 0x12, 31:2, eax, 31:12, epc_sec_base_addr_0 , EPC section base addr, bits[12:31]
- 0x12, 31:2, ebx, 19:0, epc_sec_base_addr_1 , EPC section base addr, bits[32:51]
+ 0x12, 31:2, eax, 31:12, epc_sec_base_addr_0 , EPC section base address, bits[12:31]
+ 0x12, 31:2, ebx, 19:0, epc_sec_base_addr_1 , EPC section base address, bits[32:51]
0x12, 31:2, ecx, 3:0, epc_sec_type , EPC section type / property encoding
0x12, 31:2, ecx, 31:12, epc_sec_size_0 , EPC section size, bits[12:31]
0x12, 31:2, edx, 19:0, epc_sec_size_1 , EPC section size, bits[32:51]
@@ -481,7 +481,7 @@
0x15, 0, ecx, 31:0, cpu_crystal_hz , Core crystal clock nominal frequency, in Hz
# Leaf 16H
-# Intel processor fequency enumeration
+# Intel processor frequency enumeration
0x16, 0, eax, 15:0, cpu_base_mhz , Processor base frequency, in MHz
0x16, 0, ebx, 15:0, cpu_max_mhz , Processor max frequency, in MHz
@@ -492,7 +492,7 @@
0x17, 0, eax, 31:0, soc_max_subleaf , Max cpuid leaf 0x17 subleaf
0x17, 0, ebx, 15:0, soc_vendor_id , SoC vendor ID
- 0x17, 0, ebx, 16, is_vendor_scheme , Assigned by industry enumaeratoion scheme (not Intel)
+ 0x17, 0, ebx, 16, is_vendor_scheme , Assigned by industry enumeration scheme (not Intel)
0x17, 0, ecx, 31:0, soc_proj_id , SoC project ID, assigned by vendor
0x17, 0, edx, 31:0, soc_stepping_id , Soc project stepping ID, assigned by vendor
0x17, 3:1, eax, 31:0, vendor_brand_a , Vendor Brand ID string, bytes subleaf_nr * (0 -> 3)
@@ -508,13 +508,13 @@
0x18, 31:0, ebx, 1, tlb_2m_page , TLB 2MB-page entries supported
0x18, 31:0, ebx, 2, tlb_4m_page , TLB 4MB-page entries supported
0x18, 31:0, ebx, 3, tlb_1g_page , TLB 1GB-page entries supported
- 0x18, 31:0, ebx, 10:8, hard_partitioning , (Hard/Soft) partitioning between logical CPUs sharing this struct
+ 0x18, 31:0, ebx, 10:8, hard_partitioning , (Hard/Soft) partitioning between logical CPUs sharing this structure
0x18, 31:0, ebx, 31:16, n_way_associative , Ways of associativity
0x18, 31:0, ecx, 31:0, n_sets , Number of sets
0x18, 31:0, edx, 4:0, tlb_type , Translation cache type (TLB type)
0x18, 31:0, edx, 7:5, tlb_cache_level , Translation cache level (1-based)
0x18, 31:0, edx, 8, is_fully_associative , Fully-associative structure
- 0x18, 31:0, edx, 25:14, tlb_max_addressible_ids, Max num of addressible IDs for logical CPUs sharing this TLB - 1
+ 0x18, 31:0, edx, 25:14, tlb_max_addressible_ids, Max number of addressable IDs for logical CPUs sharing this TLB - 1
# Leaf 19H
# Intel Key Locker enumeration
@@ -577,7 +577,7 @@
# Intel AMX, TMUL (Tile-matrix MULtiply) accelerator unit enumeration
0x1e, 0, ebx, 7:0, tmul_maxk , TMUL unit maximum height, K (rows or columns)
- 0x1e, 0, ebx, 23:8, tmul_maxn , TMUL unit maxiumum SIMD dimension, N (column bytes)
+ 0x1e, 0, ebx, 23:8, tmul_maxn , TMUL unit maximum SIMD dimension, N (column bytes)
# Leaf 1FH
# Intel extended topology enumeration v2
@@ -733,9 +733,9 @@
# Leaf 80000005H
# AMD/Transmeta L1 cache and L1 TLB enumeration
-0x80000005, 0, eax, 7:0, l1_itlb_2m_4m_nentries , L1 ITLB #entires, 2M and 4M pages
+0x80000005, 0, eax, 7:0, l1_itlb_2m_4m_nentries , L1 ITLB #entries, 2M and 4M pages
0x80000005, 0, eax, 15:8, l1_itlb_2m_4m_assoc , L1 ITLB associativity, 2M and 4M pages
-0x80000005, 0, eax, 23:16, l1_dtlb_2m_4m_nentries , L1 DTLB #entires, 2M and 4M pages
+0x80000005, 0, eax, 23:16, l1_dtlb_2m_4m_nentries , L1 DTLB #entries, 2M and 4M pages
0x80000005, 0, eax, 31:24, l1_dtlb_2m_4m_assoc , L1 DTLB associativity, 2M and 4M pages
0x80000005, 0, ebx, 7:0, l1_itlb_4k_nentries , L1 ITLB #entries, 4K pages
0x80000005, 0, ebx, 15:8, l1_itlb_4k_assoc , L1 ITLB associativity, 4K pages
@@ -774,11 +774,11 @@
# CPU power management (mostly AMD) and AMD RAS enumeration
0x80000007, 0, ebx, 0, overflow_recov , MCA overflow conditions not fatal
-0x80000007, 0, ebx, 1, succor , Software containment of UnCORRectable errors
+0x80000007, 0, ebx, 1, succor , Software containment of uncorrectable errors
0x80000007, 0, ebx, 2, hw_assert , Hardware assert MSRs
0x80000007, 0, ebx, 3, smca , Scalable MCA (MCAX MSRs)
0x80000007, 0, ecx, 31:0, cpu_pwr_sample_ratio , CPU power sample time ratio
-0x80000007, 0, edx, 0, digital_temp , Digital temprature sensor
+0x80000007, 0, edx, 0, digital_temp , Digital temperature sensor
0x80000007, 0, edx, 1, powernow_freq_id , PowerNOW! frequency scaling
0x80000007, 0, edx, 2, powernow_volt_id , PowerNOW! voltage scaling
0x80000007, 0, edx, 3, thermal_trip , THERMTRIP (Thermal Trip)
@@ -821,7 +821,7 @@
0x80000008, 0, ebx, 23, amd_ppin , Protected Processor Inventory Number
0x80000008, 0, ebx, 24, amd_ssbd , Speculative Store Bypass Disable
0x80000008, 0, ebx, 25, virt_ssbd , virtualized SSBD (Speculative Store Bypass Disable)
-0x80000008, 0, ebx, 26, amd_ssb_no , SSBD not needed (fixed in HW)
+0x80000008, 0, ebx, 26, amd_ssb_no , SSBD is not needed (fixed in hardware)
0x80000008, 0, ebx, 27, cppc , Collaborative Processor Performance Control
0x80000008, 0, ebx, 28, amd_psfd , Predictive Store Forward Disable
0x80000008, 0, ebx, 29, btc_no , CPU not affected by Branch Type Confusion
@@ -849,7 +849,7 @@
0x8000000a, 0, edx, 10, pausefilter , Pause intercept filter
0x8000000a, 0, edx, 12, pfthreshold , Pause filter threshold
0x8000000a, 0, edx, 13, avic , Advanced virtual interrupt controller
-0x8000000a, 0, edx, 15, v_vmsave_vmload , Virtual VMSAVE/VMLOAD (nested virt)
+0x8000000a, 0, edx, 15, v_vmsave_vmload , Virtual VMSAVE/VMLOAD (nested virtualization)
0x8000000a, 0, edx, 16, vgif , Virtualize the Global Interrupt Flag
0x8000000a, 0, edx, 17, gmet , Guest mode execution trap
0x8000000a, 0, edx, 18, x2avic , Virtual x2APIC
@@ -861,7 +861,7 @@
0x8000000a, 0, edx, 25, vnmi , NMI virtualization
0x8000000a, 0, edx, 26, ibs_virt , IBS Virtualization
0x8000000a, 0, edx, 27, ext_lvt_off_chg , Extended LVT offset fault change
-0x8000000a, 0, edx, 28, svme_addr_chk , Guest SVME addr check
+0x8000000a, 0, edx, 28, svme_addr_chk , Guest SVME address check
# Leaf 80000019H
# AMD TLB 1G-pages enumeration
@@ -902,20 +902,20 @@
# AMD LWP (Lightweight Profiling)
0x8000001c, 0, eax, 0, os_lwp_avail , LWP is available to application programs (supported by OS)
-0x8000001c, 0, eax, 1, os_lpwval , LWPVAL instruction (EventId=1) is supported by OS
-0x8000001c, 0, eax, 2, os_lwp_ire , Instructions Retired Event (EventId=2) is supported by OS
-0x8000001c, 0, eax, 3, os_lwp_bre , Branch Retired Event (EventId=3) is supported by OS
-0x8000001c, 0, eax, 4, os_lwp_dme , DCache Miss Event (EventId=4) is supported by OS
-0x8000001c, 0, eax, 5, os_lwp_cnh , CPU Clocks Not Halted event (EventId=5) is supported by OS
-0x8000001c, 0, eax, 6, os_lwp_rnh , CPU Reference clocks Not Halted event (EventId=6) is supported by OS
+0x8000001c, 0, eax, 1, os_lpwval , LWPVAL instruction is supported by OS
+0x8000001c, 0, eax, 2, os_lwp_ire , Instructions Retired Event is supported by OS
+0x8000001c, 0, eax, 3, os_lwp_bre , Branch Retired Event is supported by OS
+0x8000001c, 0, eax, 4, os_lwp_dme , Dcache Miss Event is supported by OS
+0x8000001c, 0, eax, 5, os_lwp_cnh , CPU Clocks Not Halted event is supported by OS
+0x8000001c, 0, eax, 6, os_lwp_rnh , CPU Reference clocks Not Halted event is supported by OS
0x8000001c, 0, eax, 29, os_lwp_cont , LWP sampling in continuous mode is supported by OS
0x8000001c, 0, eax, 30, os_lwp_ptsc , Performance Time Stamp Counter in event records is supported by OS
0x8000001c, 0, eax, 31, os_lwp_int , Interrupt on threshold overflow is supported by OS
0x8000001c, 0, ebx, 7:0, lwp_lwpcb_sz , LWP Control Block size, in quadwords
0x8000001c, 0, ebx, 15:8, lwp_event_sz , LWP event record size, in bytes
-0x8000001c, 0, ebx, 23:16, lwp_max_events , LWP max supported EventId value (EventID 255 not included)
+0x8000001c, 0, ebx, 23:16, lwp_max_events , LWP max supported EventID value (EventID 255 not included)
0x8000001c, 0, ebx, 31:24, lwp_event_offset , LWP events area offset in the LWP Control Block
-0x8000001c, 0, ecx, 4:0, lwp_latency_max , Num of bits in cache latency counters (10 to 31)
+0x8000001c, 0, ecx, 4:0, lwp_latency_max , Number of bits in cache latency counters (10 to 31)
0x8000001c, 0, ecx, 5, lwp_data_adddr , Cache miss events report the data address of the reference
0x8000001c, 0, ecx, 8:6, lwp_latency_rnd , Amount by which cache latency is rounded
0x8000001c, 0, ecx, 15:9, lwp_version , LWP implementation version
@@ -924,16 +924,16 @@
0x8000001c, 0, ecx, 29, lwp_ip_filtering , IP filtering (IPI, IPF, BaseIP, and LimitIP @ LWPCP) supported
0x8000001c, 0, ecx, 30, lwp_cache_levels , Cache-related events can be filtered by cache level
0x8000001c, 0, ecx, 31, lwp_cache_latency , Cache-related events can be filtered by latency
-0x8000001c, 0, edx, 0, hw_lwp_avail , LWP is available in Hardware
-0x8000001c, 0, edx, 1, hw_lpwval , LWPVAL instruction (EventId=1) is available in HW
-0x8000001c, 0, edx, 2, hw_lwp_ire , Instructions Retired Event (EventId=2) is available in HW
-0x8000001c, 0, edx, 3, hw_lwp_bre , Branch Retired Event (EventId=3) is available in HW
-0x8000001c, 0, edx, 4, hw_lwp_dme , DCache Miss Event (EventId=4) is available in HW
-0x8000001c, 0, edx, 5, hw_lwp_cnh , CPU Clocks Not Halted event (EventId=5) is available in HW
-0x8000001c, 0, edx, 6, hw_lwp_rnh , CPU Reference clocks Not Halted event (EventId=6) is available in HW
-0x8000001c, 0, edx, 29, hw_lwp_cont , LWP sampling in continuous mode is available in HW
-0x8000001c, 0, edx, 30, hw_lwp_ptsc , Performance Time Stamp Counter in event records is available in HW
-0x8000001c, 0, edx, 31, hw_lwp_int , Interrupt on threshold overflow is available in HW
+0x8000001c, 0, edx, 0, hw_lwp_avail , LWP is available in hardware
+0x8000001c, 0, edx, 1, hw_lpwval , LWPVAL instruction is available in hardware
+0x8000001c, 0, edx, 2, hw_lwp_ire , Instructions Retired Event is available in hardware
+0x8000001c, 0, edx, 3, hw_lwp_bre , Branch Retired Event is available in hardware
+0x8000001c, 0, edx, 4, hw_lwp_dme , Dcache Miss Event is available in hardware
+0x8000001c, 0, edx, 5, hw_lwp_cnh , Clocks Not Halted event is available in hardware
+0x8000001c, 0, edx, 6, hw_lwp_rnh , Reference clocks Not Halted event is available in hardware
+0x8000001c, 0, edx, 29, hw_lwp_cont , LWP sampling in continuous mode is available in hardware
+0x8000001c, 0, edx, 30, hw_lwp_ptsc , Performance Time Stamp Counter in event records is available in hardware
+0x8000001c, 0, edx, 31, hw_lwp_int , Interrupt on threshold overflow is available in hardware
# Leaf 8000001DH
# AMD deterministic cache parameters
@@ -969,10 +969,10 @@
0x8000001f, 0, eax, 4, sev_nested_paging , SEV secure nested paging supported
0x8000001f, 0, eax, 5, vm_permission_levels , VMPL supported
0x8000001f, 0, eax, 6, rpmquery , RPMQUERY instruction supported
-0x8000001f, 0, eax, 7, vmpl_sss , VMPL supervisor shadwo stack supported
+0x8000001f, 0, eax, 7, vmpl_sss , VMPL supervisor shadow stack supported
0x8000001f, 0, eax, 8, secure_tsc , Secure TSC supported
0x8000001f, 0, eax, 9, v_tsc_aux , Hardware virtualizes TSC_AUX
-0x8000001f, 0, eax, 10, sme_coherent , HW enforces cache coherency across encryption domains
+0x8000001f, 0, eax, 10, sme_coherent , Cache coherency is enforced across encryption domains
0x8000001f, 0, eax, 11, req_64bit_hypervisor , SEV guest mandates 64-bit hypervisor
0x8000001f, 0, eax, 12, restricted_injection , Restricted Injection supported
0x8000001f, 0, eax, 13, alternate_injection , Alternate Injection supported
@@ -984,13 +984,13 @@
0x8000001f, 0, eax, 19, virt_ibs , IBS state virtualization is supported for SEV-ES guests
0x8000001f, 0, eax, 24, vmsa_reg_protection , VMSA register protection is supported
0x8000001f, 0, eax, 25, smt_protection , SMT protection is supported
-0x8000001f, 0, eax, 28, svsm_page_msr , SVSM communication page MSR (0xc001f000h) is supported
+0x8000001f, 0, eax, 28, svsm_page_msr , SVSM communication page MSR (0xc001f000) is supported
0x8000001f, 0, eax, 29, nested_virt_snp_msr , VIRT_RMPUPDATE/VIRT_PSMASH MSRs are supported
0x8000001f, 0, ebx, 5:0, pte_cbit_pos , PTE bit number used to enable memory encryption
0x8000001f, 0, ebx, 11:6, phys_addr_reduction_nbits, Reduction of phys address space when encryption is enabled, in bits
0x8000001f, 0, ebx, 15:12, vmpl_count , Number of VM permission levels (VMPL) supported
0x8000001f, 0, ecx, 31:0, enc_guests_max , Max supported number of simultaneous encrypted guests
-0x8000001f, 0, edx, 31:0, min_sev_asid_no_sev_es , Mininum ASID for SEV-enabled SEV-ES-disabled guest
+0x8000001f, 0, edx, 31:0, min_sev_asid_no_sev_es , Minimum ASID for SEV-enabled SEV-ES-disabled guest
# Leaf 80000020H
# AMD Platform QoS extended feature IDs
@@ -999,6 +999,8 @@
0x80000020, 0, ebx, 2, smba , Slow Memory Bandwidth Allocation support
0x80000020, 0, ebx, 3, bmec , Bandwidth Monitoring Event Configuration support
0x80000020, 0, ebx, 4, l3rr , L3 Range Reservation support
+0x80000020, 0, ebx, 5, abmc , Assignable Bandwidth Monitoring Counters
+0x80000020, 0, ebx, 6, sdciae , Smart Data Cache Injection (SDCI) Allocation Enforcement
0x80000020, 1, eax, 31:0, mba_limit_len , MBA enforcement limit size
0x80000020, 1, edx, 31:0, mba_cos_max , MBA max Class of Service number (zero-based)
0x80000020, 2, eax, 31:0, smba_limit_len , SMBA enforcement limit size
@@ -1023,12 +1025,21 @@
0x80000021, 0, eax, 7, upper_addr_ignore , EFER MSR Upper Address Ignore Enable bit supported
0x80000021, 0, eax, 8, autoibrs , EFER MSR Automatic IBRS enable bit supported
0x80000021, 0, eax, 9, no_smm_ctl_msr , SMM_CTL MSR (0xc0010116) is not present
-0x80000021, 0, eax, 10, fsrs_supported , Fast Short Rep Stosb (FSRS) is supported
-0x80000021, 0, eax, 11, fsrc_supported , Fast Short Repe Cmpsb (FSRC) is supported
+0x80000021, 0, eax, 10, fsrs_supported , Fast Short Rep STOSB (FSRS) is supported
+0x80000021, 0, eax, 11, fsrc_supported , Fast Short Rep CMPSB (FSRC) is supported
0x80000021, 0, eax, 13, prefetch_ctl_msr , Prefetch control MSR is supported
+0x80000021, 0, eax, 16, opcode_reclaim , Reserves opcode space
0x80000021, 0, eax, 17, user_cpuid_disable , #GP when executing CPUID at CPL > 0 is supported
0x80000021, 0, eax, 18, epsf_supported , Enhanced Predictive Store Forwarding (EPSF) is supported
-0x80000021, 0, ebx, 11:0, microcode_patch_size , Size of microcode patch, in 16-byte units
+0x80000021, 0, eax, 22, wl_feedback , Workload-based heuristic feedback to OS
+0x80000021, 0, eax, 24, eraps_support , Enhanced Return Address Predictor Security
+0x80000021, 0, eax, 27, sbpb , Support for the Selective Branch Predictor Barrier
+0x80000021, 0, eax, 28, ibpb_brtype , Branch predictions flushed from CPU branch predictor
+0x80000021, 0, eax, 29, srso_no , CPU is not subject to the SRSO vulnerability
+0x80000021, 0, eax, 30, srso_uk_no , CPU is not vulnerable to SRSO at user-kernel boundary
+0x80000021, 0, eax, 31, srso_msr_fix , Software may use MSR BP_CFG[BpSpecReduce] to mitigate SRSO
+0x80000021, 0, ebx, 15:0, microcode_patch_size , Size of microcode patch, in 16-byte units
+0x80000021, 0, ebx, 23:16, rap_size , Return Address Predictor size
# Leaf 80000022H
# AMD Performance Monitoring v2 enumeration
@@ -1036,7 +1047,7 @@
0x80000022, 0, eax, 0, perfmon_v2 , Performance monitoring v2 supported
0x80000022, 0, eax, 1, lbr_v2 , Last Branch Record v2 extensions (LBR Stack)
0x80000022, 0, eax, 2, lbr_pmc_freeze , Freezing core performance counters / LBR Stack supported
-0x80000022, 0, ebx, 3:0, n_pmc_core , Number of core perfomance counters
+0x80000022, 0, ebx, 3:0, n_pmc_core , Number of core performance counters
0x80000022, 0, ebx, 9:4, lbr_v2_stack_size , Number of available LBR stack entries
0x80000022, 0, ebx, 15:10, n_pmc_northbridge , Number of available northbridge (data fabric) performance counters
0x80000022, 0, ebx, 21:16, n_pmc_umc , Number of available UMC performance counters
@@ -1046,7 +1057,7 @@
# AMD Secure Multi-key Encryption enumeration
0x80000023, 0, eax, 0, mem_hmk_mode , MEM-HMK encryption mode is supported
-0x80000023, 0, ebx, 15:0, mem_hmk_avail_keys , MEM-HMK mode: total num of available encryption keys
+0x80000023, 0, ebx, 15:0, mem_hmk_avail_keys , MEM-HMK mode: total number of available encryption keys
# Leaf 80000026H
# AMD extended topology enumeration v2
@@ -1134,7 +1145,7 @@
0x80860007, 0, eax, 31:0, cpu_cur_mhz , Current CPU frequency, in MHz
0x80860007, 0, ebx, 31:0, cpu_cur_voltage , Current CPU voltage, in millivolts
-0x80860007, 0, ecx, 31:0, cpu_cur_perf_pctg , Current CPU performance percentage, 0 - 100d
+0x80860007, 0, ecx, 31:0, cpu_cur_perf_pctg , Current CPU performance percentage, 0 - 100
0x80860007, 0, edx, 31:0, cpu_cur_gate_delay , Current CPU gate delay, in femtoseconds
# Leaf C0000000H
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 18/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.2
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (16 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 17/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.1 Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 19/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 20/20] MAINTAINERS: Include kcpuid under X86 CPUID DATABASE Ahmed S. Darwish
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Update kcpuid's CSV file to version 2.2, as generated by x86-cpuid-db.
Per Ingo Molnar's feedback, it is desired to always use CPUID in its
capitalized form. The v2.2 release fixed all instances of small case
"cpuid" at the project's XML database, and thus all of its generated
files.
Reported-by: Ingo Molnar <mingo@kernel.org>
Closes: https://lkml.kernel.org/r/Z8bHK391zKE4gUEW@gmail.com
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
Link: https://gitlab.com/x86-cpuid.org/x86-cpuid-db/-/blob/v2.2/CHANGELOG.rst
---
tools/arch/x86/kcpuid/cpuid.csv | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/tools/arch/x86/kcpuid/cpuid.csv b/tools/arch/x86/kcpuid/cpuid.csv
index 0f9c11208674..9613e09cbfb3 100644
--- a/tools/arch/x86/kcpuid/cpuid.csv
+++ b/tools/arch/x86/kcpuid/cpuid.csv
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: CC0-1.0
-# Generator: x86-cpuid-db v2.1
+# Generator: x86-cpuid-db v2.2
#
# Auto-generated file.
@@ -12,7 +12,7 @@
# Leaf 0H
# Maximum standard leaf number + CPU vendor string
- 0x0, 0, eax, 31:0, max_std_leaf , Highest cpuid standard leaf supported
+ 0x0, 0, eax, 31:0, max_std_leaf , Highest standard CPUID leaf supported
0x0, 0, ebx, 31:0, cpu_vendorid_0 , CPU vendor ID string bytes 0 - 3
0x0, 0, ecx, 31:0, cpu_vendorid_2 , CPU vendor ID string bytes 8 - 11
0x0, 0, edx, 31:0, cpu_vendorid_1 , CPU vendor ID string bytes 4 - 7
@@ -193,7 +193,7 @@
# Leaf 7H
# Extended CPU features enumeration
- 0x7, 0, eax, 31:0, leaf7_n_subleaves , Number of cpuid 0x7 subleaves
+ 0x7, 0, eax, 31:0, leaf7_n_subleaves , Number of leaf 0x7 subleaves
0x7, 0, ebx, 0, fsgsbase , FSBASE/GSBASE read/write support
0x7, 0, ebx, 1, tsc_adjust , IA32_TSC_ADJUST MSR supported
0x7, 0, ebx, 2, sgx , Intel SGX (Software Guard Extensions)
@@ -281,7 +281,7 @@
0x7, 1, eax, 5, avx512_bf16 , AVX-512 bfloat16 instructions
0x7, 1, eax, 6, lass , Linear address space separation
0x7, 1, eax, 7, cmpccxadd , CMPccXADD instructions
- 0x7, 1, eax, 8, arch_perfmon_ext , ArchPerfmonExt: CPUID leaf 0x23 is supported
+ 0x7, 1, eax, 8, arch_perfmon_ext , ArchPerfmonExt: leaf 0x23 is supported
0x7, 1, eax, 10, fzrm , Fast zero-length REP MOVSB
0x7, 1, eax, 11, fsrs , Fast short REP STOSB
0x7, 1, eax, 12, fsrc , Fast Short REP CMPSB/SCASB
@@ -319,7 +319,7 @@
0xa, 0, eax, 7:0, pmu_version , Performance monitoring unit version ID
0xa, 0, eax, 15:8, pmu_n_gcounters , Number of general PMU counters per logical CPU
0xa, 0, eax, 23:16, pmu_gcounters_nbits , Bitwidth of PMU general counters
- 0xa, 0, eax, 31:24, pmu_cpuid_ebx_bits , Length of cpuid leaf 0xa EBX bit vector
+ 0xa, 0, eax, 31:24, pmu_cpuid_ebx_bits , Length of leaf 0xa EBX bit vector
0xa, 0, ebx, 0, no_core_cycle_evt , Core cycle event not available
0xa, 0, ebx, 1, no_insn_retired_evt , Instruction retired event not available
0xa, 0, ebx, 2, no_refcycle_evt , Reference cycles event not available
@@ -453,7 +453,7 @@
# Leaf 14H
# Intel Processor Trace enumeration
- 0x14, 0, eax, 31:0, pt_max_subleaf , Max cpuid 0x14 subleaf
+ 0x14, 0, eax, 31:0, pt_max_subleaf , Maximum leaf 0x14 subleaf
0x14, 0, ebx, 0, cr3_filtering , IA32_RTIT_CR3_MATCH is accessible
0x14, 0, ebx, 1, psb_cyc , Configurable PSB and cycle-accurate mode
0x14, 0, ebx, 2, ip_filtering , IP/TraceStop filtering; Warm-reset PT MSRs preservation
@@ -490,7 +490,7 @@
# Leaf 17H
# Intel SoC vendor attributes enumeration
- 0x17, 0, eax, 31:0, soc_max_subleaf , Max cpuid leaf 0x17 subleaf
+ 0x17, 0, eax, 31:0, soc_max_subleaf , Maximum leaf 0x17 subleaf
0x17, 0, ebx, 15:0, soc_vendor_id , SoC vendor ID
0x17, 0, ebx, 16, is_vendor_scheme , Assigned by industry enumeration scheme (not Intel)
0x17, 0, ecx, 31:0, soc_proj_id , SoC project ID, assigned by vendor
@@ -503,7 +503,7 @@
# Leaf 18H
# Intel determenestic address translation (TLB) parameters
- 0x18, 31:0, eax, 31:0, tlb_max_subleaf , Max cpuid 0x18 subleaf
+ 0x18, 31:0, eax, 31:0, tlb_max_subleaf , Maximum leaf 0x18 subleaf
0x18, 31:0, ebx, 0, tlb_4k_page , TLB 4KB-page entries supported
0x18, 31:0, ebx, 1, tlb_2m_page , TLB 2MB-page entries supported
0x18, 31:0, ebx, 2, tlb_4m_page , TLB 4MB-page entries supported
@@ -634,7 +634,7 @@
# Leaf 80000000H
# Maximum extended leaf number + AMD/Transmeta CPU vendor string
-0x80000000, 0, eax, 31:0, max_ext_leaf , Maximum extended cpuid leaf supported
+0x80000000, 0, eax, 31:0, max_ext_leaf , Maximum extended CPUID leaf supported
0x80000000, 0, ebx, 31:0, cpu_vendorid_0 , Vendor ID string bytes 0 - 3
0x80000000, 0, ecx, 31:0, cpu_vendorid_2 , Vendor ID string bytes 8 - 11
0x80000000, 0, edx, 31:0, cpu_vendorid_1 , Vendor ID string bytes 4 - 7
@@ -669,7 +669,7 @@
0x80000001, 0, ecx, 17, tce , Translation cache extension
0x80000001, 0, ecx, 19, nodeid_msr , NodeId MSR (0xc001100c)
0x80000001, 0, ecx, 21, tbm , Trailing bit manipulations
-0x80000001, 0, ecx, 22, topoext , Topology Extensions (cpuid leaf 0x8000001d)
+0x80000001, 0, ecx, 22, topoext , Topology Extensions (leaf 0x8000001d)
0x80000001, 0, ecx, 23, perfctr_core , Core performance counter extensions
0x80000001, 0, ecx, 24, perfctr_nb , NB/DF performance counter extensions
0x80000001, 0, ecx, 26, bpext , Data access breakpoint extension
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 19/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (17 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 18/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.2 Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 20/20] MAINTAINERS: Include kcpuid under X86 CPUID DATABASE Ahmed S. Darwish
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
Update kcpuid's CSV file to version 2.3, as generated by x86-cpuid-db.
Summary of the v2.3 changes:
* Per H. Peter Anvin's feedback, leaf 0x3 is not unique to Transmeta as
the CSV file earlier claimed. Since leaf 0x3's format differs between
Intel and Transmeta, and the project does not yet support having the
same CPUID bitfield with varying interpretations across vendors, leaf
0x3 is removed for now. Given that Intel discontinued support for PSN
from Pentium 4 onward, and Linux force disables it on early boot for
privacy concerns, this should have minimal impact.
* Leaf 0x80000021: Make bitfield IDs and descriptions coherent with each
other. Remove "_support" from bitfield IDs, as no other leaf has such
convention.
Reported-by: "H. Peter Anvin" <hpa@zytor.com>
Closes: https://lkml.kernel.org/r/C7684E03-36E0-4D58-B6F0-78F4DB82D737@zytor.com
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
Link: https://gitlab.com/x86-cpuid.org/x86-cpuid-db/-/blob/v2.3/CHANGELOG.rst
---
tools/arch/x86/kcpuid/cpuid.csv | 30 +++++++++++-------------------
1 file changed, 11 insertions(+), 19 deletions(-)
diff --git a/tools/arch/x86/kcpuid/cpuid.csv b/tools/arch/x86/kcpuid/cpuid.csv
index 9613e09cbfb3..8d25b0b49f3b 100644
--- a/tools/arch/x86/kcpuid/cpuid.csv
+++ b/tools/arch/x86/kcpuid/cpuid.csv
@@ -1,5 +1,5 @@
# SPDX-License-Identifier: CC0-1.0
-# Generator: x86-cpuid-db v2.2
+# Generator: x86-cpuid-db v2.3
#
# Auto-generated file.
@@ -116,14 +116,6 @@
0x2, 0, edx, 30:24, desc15 , Descriptor #15
0x2, 0, edx, 31, edx_invalid , Descriptors 12-15 are invalid if set
-# Leaf 3H
-# Transmeta Processor Serial Number (PSN)
-
- 0x3, 0, eax, 31:0, cpu_psn_0 , Processor Serial Number bytes 0 - 3
- 0x3, 0, ebx, 31:0, cpu_psn_1 , Processor Serial Number bytes 4 - 7
- 0x3, 0, ecx, 31:0, cpu_psn_2 , Processor Serial Number bytes 8 - 11
- 0x3, 0, edx, 31:0, cpu_psn_3 , Processor Serial Number bytes 12 - 15
-
# Leaf 4H
# Intel deterministic cache parameters
@@ -1020,20 +1012,20 @@
0x80000021, 0, eax, 0, no_nested_data_bp , No nested data breakpoints
0x80000021, 0, eax, 1, fsgs_non_serializing , WRMSR to {FS,GS,KERNEL_GS}_BASE is non-serializing
0x80000021, 0, eax, 2, lfence_rdtsc , LFENCE always serializing / synchronizes RDTSC
-0x80000021, 0, eax, 3, smm_page_cfg_lock , SMM paging configuration lock is supported
+0x80000021, 0, eax, 3, smm_page_cfg_lock , SMM paging configuration lock
0x80000021, 0, eax, 6, null_sel_clr_base , Null selector clears base
-0x80000021, 0, eax, 7, upper_addr_ignore , EFER MSR Upper Address Ignore Enable bit supported
-0x80000021, 0, eax, 8, autoibrs , EFER MSR Automatic IBRS enable bit supported
-0x80000021, 0, eax, 9, no_smm_ctl_msr , SMM_CTL MSR (0xc0010116) is not present
-0x80000021, 0, eax, 10, fsrs_supported , Fast Short Rep STOSB (FSRS) is supported
-0x80000021, 0, eax, 11, fsrc_supported , Fast Short Rep CMPSB (FSRC) is supported
-0x80000021, 0, eax, 13, prefetch_ctl_msr , Prefetch control MSR is supported
+0x80000021, 0, eax, 7, upper_addr_ignore , EFER MSR Upper Address Ignore
+0x80000021, 0, eax, 8, autoibrs , EFER MSR Automatic IBRS
+0x80000021, 0, eax, 9, no_smm_ctl_msr , SMM_CTL MSR (0xc0010116) is not available
+0x80000021, 0, eax, 10, fsrs , Fast Short Rep STOSB
+0x80000021, 0, eax, 11, fsrc , Fast Short Rep CMPSB
+0x80000021, 0, eax, 13, prefetch_ctl_msr , Prefetch control MSR is available
0x80000021, 0, eax, 16, opcode_reclaim , Reserves opcode space
0x80000021, 0, eax, 17, user_cpuid_disable , #GP when executing CPUID at CPL > 0 is supported
-0x80000021, 0, eax, 18, epsf_supported , Enhanced Predictive Store Forwarding (EPSF) is supported
+0x80000021, 0, eax, 18, epsf , Enhanced Predictive Store Forwarding
0x80000021, 0, eax, 22, wl_feedback , Workload-based heuristic feedback to OS
-0x80000021, 0, eax, 24, eraps_support , Enhanced Return Address Predictor Security
-0x80000021, 0, eax, 27, sbpb , Support for the Selective Branch Predictor Barrier
+0x80000021, 0, eax, 24, eraps , Enhanced Return Address Predictor Security
+0x80000021, 0, eax, 27, sbpb , Selective Branch Predictor Barrier
0x80000021, 0, eax, 28, ibpb_brtype , Branch predictions flushed from CPU branch predictor
0x80000021, 0, eax, 29, srso_no , CPU is not subject to the SRSO vulnerability
0x80000021, 0, eax, 30, srso_uk_no , CPU is not vulnerable to SRSO at user-kernel boundary
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* [PATCH v3 20/20] MAINTAINERS: Include kcpuid under X86 CPUID DATABASE
2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
` (18 preceding siblings ...)
2025-03-24 14:20 ` [PATCH v3 19/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
@ 2025-03-24 14:20 ` Ahmed S. Darwish
19 siblings, 0 replies; 22+ messages in thread
From: Ahmed S. Darwish @ 2025-03-24 14:20 UTC (permalink / raw)
To: Ingo Molnar, Borislav Petkov, Dave Hansen
Cc: Thomas Gleixner, Andrew Cooper, H. Peter Anvin, John Ogness, x86,
x86-cpuid, LKML, Ahmed S. Darwish
kcpuid's CSV file is covered by the "x86 CPUID database" MAINTAINERS
entry. Recent patches have shown that changes to that file may require
updates to the kcpuid code, so include the whole of tools/x86/kcpuid
under the same entry.
This also ensures that myself and the x86-cpuid mailing list are CCed on
future kcpuid patches.
Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
---
MAINTAINERS | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/MAINTAINERS b/MAINTAINERS
index c9763412a508..2a7b54b83052 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -25713,7 +25713,7 @@ R: Ahmed S. Darwish <darwi@linutronix.de>
L: x86-cpuid@lists.linux.dev
S: Maintained
W: https://x86-cpuid.org
-F: tools/arch/x86/kcpuid/cpuid.csv
+F: tools/arch/x86/kcpuid/
X86 ENTRY CODE
M: Andy Lutomirski <luto@kernel.org>
--
2.48.1
^ permalink raw reply related [flat|nested] 22+ messages in thread
* Re: [PATCH v3 01/20] tools/x86/kcpuid: Fix error handling
2025-03-24 14:20 ` [PATCH v3 01/20] tools/x86/kcpuid: Fix error handling Ahmed S. Darwish
@ 2025-03-25 8:55 ` Ingo Molnar
0 siblings, 0 replies; 22+ messages in thread
From: Ingo Molnar @ 2025-03-25 8:55 UTC (permalink / raw)
To: Ahmed S. Darwish
Cc: Ingo Molnar, Borislav Petkov, Dave Hansen, Thomas Gleixner,
Andrew Cooper, H. Peter Anvin, John Ogness, x86, x86-cpuid, LKML
* Ahmed S. Darwish <darwi@linutronix.de> wrote:
> static void usage(void)
> {
> - printf("kcpuid [-abdfhr] [-l leaf] [-s subleaf]\n"
> - "\t-a|--all Show both bit flags and complex bit fields info\n"
> - "\t-b|--bitflags Show boolean flags only\n"
> - "\t-d|--detail Show details of the flag/fields (default)\n"
> - "\t-f|--flags Specify the cpuid csv file\n"
> - "\t-h|--help Show usage info\n"
> - "\t-l|--leaf=index Specify the leaf you want to check\n"
> - "\t-r|--raw Show raw cpuid data\n"
> - "\t-s|--subleaf=sub Specify the subleaf you want to check\n"
> + warnx("kcpuid [-abdfhr] [-l leaf] [-s subleaf]\n"
> + "\t-a|--all Show both bit flags and complex bit fields info\n"
> + "\t-b|--bitflags Show boolean flags only\n"
> + "\t-d|--detail Show details of the flag/fields (default)\n"
> + "\t-f|--flags Specify the cpuid csv file\n"
> + "\t-h|--help Show usage info\n"
> + "\t-l|--leaf=index Specify the leaf you want to check\n"
> + "\t-r|--raw Show raw cpuid data\n"
> + "\t-s|--subleaf=sub Specify the subleaf you want to check"
Here you missed a few cases of:
s/csv/CSV
s/cpuid/CPUID
I fixed this all up in the patches & commits, no need to resend.
Thanks,
Ingo
^ permalink raw reply [flat|nested] 22+ messages in thread
end of thread, other threads:[~2025-03-25 8:55 UTC | newest]
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2025-03-24 14:20 [PATCH v3 00/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 01/20] tools/x86/kcpuid: Fix error handling Ahmed S. Darwish
2025-03-25 8:55 ` Ingo Molnar
2025-03-24 14:20 ` [PATCH v3 02/20] tools/x86/kcpuid: Exit the program on invalid parameters Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 03/20] tools/x86/kcpuid: Simplify usage() handling Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 04/20] tools/x86/kcpuid: Save CPUID output in an array Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 05/20] tools/x86/kcpuid: Print correct CPUID output register names Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 06/20] tools/x86/kcpuid: Remove unused local variable Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 07/20] tools/x86/kcpuid: Remove unused global variable Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 08/20] tools/x86/kcpuid: Set function return type to void Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 09/20] tools/x86/kcpuid: Use C99-style for loops Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 10/20] tools/x86/kcpuid: Use <cpuid.h> intrinsics Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 11/20] tools/x86/kcpuid: Refactor CPUID range handling for future expansion Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 12/20] tools/x86/kcpuid: Extend CPUID index mask macro Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 13/20] tools/x86/kcpuid: Consolidate index validity checks Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 14/20] tools/x86/kcpuid: Filter valid CPUID ranges Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 15/20] tools/x86/kcpuid: Define Transmeta and Centaur index ranges Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 16/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.0 Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 17/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.1 Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 18/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.2 Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 19/20] tools/x86/kcpuid: Update bitfields to x86-cpuid-db v2.3 Ahmed S. Darwish
2025-03-24 14:20 ` [PATCH v3 20/20] MAINTAINERS: Include kcpuid under X86 CPUID DATABASE Ahmed S. Darwish
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