From: Wei Liu <wei.liu2@citrix.com>
To: Xen-devel <xen-devel@lists.xenproject.org>
Cc: Wei Liu <wei.liu2@citrix.com>
Subject: [PATCH v3 06/11] x86emul: use msr definitions in msr-index.h
Date: Wed, 1 Feb 2017 12:02:34 +0000 [thread overview]
Message-ID: <20170201120239.13993-7-wei.liu2@citrix.com> (raw)
In-Reply-To: <20170201120239.13993-1-wei.liu2@citrix.com>
Change the names used in code according to numeric values. Remove the
now unused macros in x86_emualte.c and fix indentation. This in turns
requires including msr-index.h and removing duplicates in userspace
x86_emulate.c in userspace harness program.
No functional change.
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---
v3:
1. Adapt build system to previous patch
---
tools/fuzz/x86_instruction_emulator/Makefile | 4 +--
tools/tests/x86_emulator/Makefile | 4 +--
tools/tests/x86_emulator/x86_emulate.c | 3 --
tools/tests/x86_emulator/x86_emulate.h | 1 +
xen/arch/x86/x86_emulate/x86_emulate.c | 43 ++++++++++------------------
5 files changed, 20 insertions(+), 35 deletions(-)
diff --git a/tools/fuzz/x86_instruction_emulator/Makefile b/tools/fuzz/x86_instruction_emulator/Makefile
index 240bc58b06..1dfacf7da4 100644
--- a/tools/fuzz/x86_instruction_emulator/Makefile
+++ b/tools/fuzz/x86_instruction_emulator/Makefile
@@ -11,7 +11,7 @@ endif
x86_emulate/x86_emulate.c x86_emulate/x86_emulate.h:
[ -L x86_emulate ] || ln -sf $(XEN_ROOT)/xen/arch/x86/x86_emulate .
-asm/x86-vendors.h asm/x86-defns.h:
+asm/x86-vendors.h asm/x86-defns.h asm/msr-index.h:
[ -L asm ] || ln -sf $(XEN_ROOT)/xen/include/asm-x86 asm
x86_emulate.c x86_emulate.h: %:
@@ -19,7 +19,7 @@ x86_emulate.c x86_emulate.h: %:
CFLAGS += $(CFLAGS_xeninclude) -D__XEN_TOOLS__ -I.
-x86_emulate.h: asm/x86-vendors.h asm/x86-defns.h
+x86_emulate.h: asm/x86-vendors.h asm/x86-defns.h asm/msr-index.h
x86_emulate.o: x86_emulate.c x86_emulate.h x86_emulate/x86_emulate.c x86_emulate/x86_emulate.h
diff --git a/tools/tests/x86_emulator/Makefile b/tools/tests/x86_emulator/Makefile
index 6978288294..1fbcd8bd71 100644
--- a/tools/tests/x86_emulator/Makefile
+++ b/tools/tests/x86_emulator/Makefile
@@ -43,10 +43,10 @@ install:
x86_emulate/x86_emulate.c x86_emulate/x86_emulate.h:
[ -L x86_emulate ] || ln -sf $(XEN_ROOT)/xen/arch/x86/x86_emulate .
-asm/x86-vendors.h asm/x86-defns.h:
+asm/x86-vendors.h asm/x86-defns.h asm/msr-index.h:
[ -L asm ] || ln -sf $(XEN_ROOT)/xen/include/asm-x86 asm
-x86_emulate.h: asm/x86-vendors.h asm/x86-defns.h
+x86_emulate.h: asm/x86-vendors.h asm/x86-defns.h asm/msr-index.h
HOSTCFLAGS += $(CFLAGS_xeninclude) -I.
diff --git a/tools/tests/x86_emulator/x86_emulate.c b/tools/tests/x86_emulator/x86_emulate.c
index 615326259b..cda0fd8ee1 100644
--- a/tools/tests/x86_emulator/x86_emulate.c
+++ b/tools/tests/x86_emulator/x86_emulate.c
@@ -2,9 +2,6 @@
#include <sys/mman.h>
-#define EFER_SCE (1 << 0)
-#define EFER_LMA (1 << 10)
-
#define cpu_has_amd_erratum(nr) 0
#define mark_regs_dirty(r) ((void)(r))
#define cpu_has_mpx false
diff --git a/tools/tests/x86_emulator/x86_emulate.h b/tools/tests/x86_emulator/x86_emulate.h
index e064deaeea..6d6f5125ca 100644
--- a/tools/tests/x86_emulator/x86_emulate.h
+++ b/tools/tests/x86_emulator/x86_emulate.h
@@ -6,6 +6,7 @@
#include <string.h>
#include <xen/xen.h>
+#include <asm/msr-index.h>
#include <asm/x86-defns.h>
#include <asm/x86-vendors.h>
diff --git a/xen/arch/x86/x86_emulate/x86_emulate.c b/xen/arch/x86/x86_emulate/x86_emulate.c
index 6e8221d9d8..e649205848 100644
--- a/xen/arch/x86/x86_emulate/x86_emulate.c
+++ b/xen/arch/x86/x86_emulate/x86_emulate.c
@@ -415,23 +415,6 @@ typedef union {
# define ASM_FLAG_OUT(yes, no) no
#endif
-/* MSRs. */
-#define MSR_TSC 0x00000010
-#define MSR_SYSENTER_CS 0x00000174
-#define MSR_SYSENTER_ESP 0x00000175
-#define MSR_SYSENTER_EIP 0x00000176
-#define MSR_DEBUGCTL 0x000001d9
-#define DEBUGCTL_BTF (1 << 1)
-#define MSR_BNDCFGS 0x00000d90
-#define BNDCFG_ENABLE (1 << 0)
-#define BNDCFG_PRESERVE (1 << 1)
-#define MSR_EFER 0xc0000080
-#define MSR_STAR 0xc0000081
-#define MSR_LSTAR 0xc0000082
-#define MSR_CSTAR 0xc0000083
-#define MSR_FMASK 0xc0000084
-#define MSR_TSC_AUX 0xc0000103
-
/* Control register flags. */
#define CR0_PE (1<<0)
#define CR0_MP (1<<1)
@@ -1731,8 +1714,8 @@ static bool is_branch_step(struct x86_emulate_ctxt *ctxt,
uint64_t debugctl;
return ops->read_msr &&
- ops->read_msr(MSR_DEBUGCTL, &debugctl, ctxt) == X86EMUL_OKAY &&
- (debugctl & DEBUGCTL_BTF);
+ ops->read_msr(MSR_IA32_DEBUGCTLMSR, &debugctl, ctxt) == X86EMUL_OKAY &&
+ (debugctl & IA32_DEBUGCTLMSR_BTF);
}
static bool umip_active(struct x86_emulate_ctxt *ctxt,
@@ -1894,9 +1877,9 @@ static void adjust_bnd(struct x86_emulate_ctxt *ctxt,
if ( !mode_ring0() )
bndcfg = read_bndcfgu();
else if ( !ops->read_msr ||
- ops->read_msr(MSR_BNDCFGS, &bndcfg, ctxt) != X86EMUL_OKAY )
+ ops->read_msr(MSR_IA32_BNDCFGS, &bndcfg, ctxt) != X86EMUL_OKAY )
return;
- if ( (bndcfg & BNDCFG_ENABLE) && !(bndcfg & BNDCFG_PRESERVE) )
+ if ( (bndcfg & IA32_BNDCFGS_ENABLE) && !(bndcfg & IA32_BNDCFGS_PRESERVE) )
{
/*
* Using BNDMK or any other MPX instruction here is pointless, as
@@ -4983,7 +4966,7 @@ x86_emulate(
goto done;
_regs.rip = msr_content;
- if ( (rc = ops->read_msr(MSR_FMASK, &msr_content, ctxt)) != 0 )
+ if ( (rc = ops->read_msr(MSR_SYSCALL_MASK, &msr_content, ctxt)) != 0 )
goto done;
_regs._eflags &= ~(msr_content | X86_EFLAGS_RF);
}
@@ -5009,7 +4992,7 @@ x86_emulate(
* As the #DB is raised after the CPL change and before the OS can
* switch stack, it is a large risk for privilege escalation.
*
- * 64bit kernels should mask EFLAGS.TF in MSR_FMASK to avoid any
+ * 64bit kernels should mask EFLAGS.TF in MSR_SYSCALL_MASK to avoid any
* vulnerability. Running the #DB handler on an IST stack is also a
* mitigation.
*
@@ -5207,7 +5190,7 @@ x86_emulate(
generate_exception_if(cr4 & CR4_TSD, EXC_GP, 0);
}
fail_if(ops->read_msr == NULL);
- if ( (rc = ops->read_msr(MSR_TSC, &val, ctxt)) != 0 )
+ if ( (rc = ops->read_msr(MSR_IA32_TSC, &val, ctxt)) != 0 )
goto done;
_regs.r(dx) = val >> 32;
_regs.r(ax) = (uint32_t)val;
@@ -5240,7 +5223,8 @@ x86_emulate(
generate_exception_if(!in_protmode(ctxt, ops), EXC_GP, 0);
fail_if(ops->read_msr == NULL);
- if ( (rc = ops->read_msr(MSR_SYSENTER_CS, &msr_content, ctxt)) != 0 )
+ if ( (rc = ops->read_msr(MSR_IA32_SYSENTER_CS, &msr_content, ctxt))
+ != 0 )
goto done;
generate_exception_if(!(msr_content & 0xfffc), EXC_GP, 0);
@@ -5266,11 +5250,13 @@ x86_emulate(
(rc = ops->write_segment(x86_seg_ss, &sreg, ctxt)) != 0 )
goto done;
- if ( (rc = ops->read_msr(MSR_SYSENTER_EIP, &msr_content, ctxt)) != 0 )
+ if ( (rc = ops->read_msr(MSR_IA32_SYSENTER_EIP, &msr_content, ctxt))
+ != 0 )
goto done;
_regs.r(ip) = lm ? msr_content : (uint32_t)msr_content;
- if ( (rc = ops->read_msr(MSR_SYSENTER_ESP, &msr_content, ctxt)) != 0 )
+ if ( (rc = ops->read_msr(MSR_IA32_SYSENTER_ESP, &msr_content, ctxt))
+ != 0 )
goto done;
_regs.r(sp) = lm ? msr_content : (uint32_t)msr_content;
@@ -5287,7 +5273,8 @@ x86_emulate(
generate_exception_if(!in_protmode(ctxt, ops), EXC_GP, 0);
fail_if(ops->read_msr == NULL);
- if ( (rc = ops->read_msr(MSR_SYSENTER_CS, &msr_content, ctxt)) != 0 )
+ if ( (rc = ops->read_msr(MSR_IA32_SYSENTER_CS, &msr_content, ctxt))
+ != 0 )
goto done;
generate_exception_if(!(msr_content & 0xfffc), EXC_GP, 0);
--
2.11.0
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xen.org
https://lists.xen.org/xen-devel
next prev parent reply other threads:[~2017-02-01 12:02 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-01 12:02 [PATCH v3 00/11] fuzz: update x86emul fuzzer Wei Liu
2017-02-01 12:02 ` [PATCH v3 01/11] x86emul/test: add missing dependency for x86_emulate.o Wei Liu
2017-02-01 13:03 ` Jan Beulich
2017-02-02 17:43 ` Wei Liu
2017-02-03 7:01 ` Jan Beulich
2017-02-01 12:02 ` [PATCH v3 02/11] x86: extract macros to x86-defns.h Wei Liu
2017-02-01 13:05 ` Jan Beulich
2017-02-02 16:58 ` Wei Liu
2017-02-01 12:02 ` [PATCH v3 03/11] x86: extract vendor numeric id to x86-vendors.h Wei Liu
2017-02-01 12:02 ` [PATCH v3 04/11] x86emul/test: use x86-vendors.h Wei Liu
2017-02-01 13:09 ` Jan Beulich
2017-02-01 13:13 ` Andrew Cooper
2017-02-01 13:22 ` Wei Liu
2017-02-01 13:26 ` Jan Beulich
2017-02-01 12:02 ` [PATCH v3 05/11] x86emul: use eflags definitions in x86-defns.h Wei Liu
2017-02-01 12:02 ` Wei Liu [this message]
2017-02-01 12:02 ` [PATCH v3 07/11] x86: add UMIP CR4 bit Wei Liu
2017-02-01 12:02 ` [PATCH v3 08/11] x86emul: use CR definitions in x86-defns.h Wei Liu
2017-02-01 12:02 ` [PATCH v3 09/11] fuzz/x86emul: update fuzzer Wei Liu
2017-02-01 16:57 ` Wei Liu
2017-02-02 12:20 ` Jan Beulich
2017-02-02 16:50 ` Wei Liu
2017-02-02 17:01 ` Jan Beulich
2017-02-02 17:12 ` Wei Liu
2017-02-03 7:04 ` Jan Beulich
2017-02-03 11:22 ` Wei Liu
2017-02-01 12:02 ` [PATCH v3 10/11] fuzz/x86emul: print out minimal input size Wei Liu
2017-02-01 12:02 ` [PATCH v3 11/11] fuzz: update README.afl example Wei Liu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170201120239.13993-7-wei.liu2@citrix.com \
--to=wei.liu2@citrix.com \
--cc=xen-devel@lists.xenproject.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).