From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
patches@lists.linux.dev,
"Peter Zijlstra (Intel)" <peterz@infradead.org>,
Borislav Petkov <bp@suse.de>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Thadeu Lima de Souza Cascardo <cascardo@canonical.com>,
Suleiman Souhlal <suleiman@google.com>
Subject: [PATCH 4.19 08/34] x86/cpufeatures: Move RETPOLINE flags to word 11
Date: Mon, 21 Nov 2022 13:43:30 +0100 [thread overview]
Message-ID: <20221121124151.170180940@linuxfoundation.org> (raw)
In-Reply-To: <20221121124150.886779344@linuxfoundation.org>
From: Peter Zijlstra <peterz@infradead.org>
commit a883d624aed463c84c22596006e5a96f5b44db31 upstream.
In order to extend the RETPOLINE features to 4, move them to word 11
where there is still room. This mostly keeps DISABLE_RETPOLINE
simple.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Signed-off-by: Suleiman Souhlal <suleiman@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/x86/include/asm/cpufeatures.h | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -202,8 +202,8 @@
#define X86_FEATURE_PROC_FEEDBACK ( 7*32+ 9) /* AMD ProcFeedbackInterface */
#define X86_FEATURE_SME ( 7*32+10) /* AMD Secure Memory Encryption */
#define X86_FEATURE_PTI ( 7*32+11) /* Kernel Page Table Isolation enabled */
-#define X86_FEATURE_RETPOLINE ( 7*32+12) /* "" Generic Retpoline mitigation for Spectre variant 2 */
-#define X86_FEATURE_RETPOLINE_LFENCE ( 7*32+13) /* "" Use LFENCE for Spectre variant 2 */
+/* FREE! ( 7*32+12) */
+/* FREE! ( 7*32+13) */
#define X86_FEATURE_INTEL_PPIN ( 7*32+14) /* Intel Processor Inventory Number */
#define X86_FEATURE_CDP_L2 ( 7*32+15) /* Code and Data Prioritization L2 */
#define X86_FEATURE_MSR_SPEC_CTRL ( 7*32+16) /* "" MSR SPEC_CTRL is implemented */
@@ -283,6 +283,14 @@
#define X86_FEATURE_CQM_MBM_LOCAL (11*32+ 3) /* LLC Local MBM monitoring */
#define X86_FEATURE_FENCE_SWAPGS_USER (11*32+ 4) /* "" LFENCE in user entry SWAPGS path */
#define X86_FEATURE_FENCE_SWAPGS_KERNEL (11*32+ 5) /* "" LFENCE in kernel entry SWAPGS path */
+/* FREE! (11*32+ 6) */
+/* FREE! (11*32+ 7) */
+/* FREE! (11*32+ 8) */
+/* FREE! (11*32+ 9) */
+/* FREE! (11*32+10) */
+/* FREE! (11*32+11) */
+#define X86_FEATURE_RETPOLINE (11*32+12) /* "" Generic Retpoline mitigation for Spectre variant 2 */
+#define X86_FEATURE_RETPOLINE_LFENCE (11*32+13) /* "" Use LFENCE for Spectre variant 2 */
/* AMD-defined CPU features, CPUID level 0x80000008 (EBX), word 13 */
#define X86_FEATURE_CLZERO (13*32+ 0) /* CLZERO instruction */
next prev parent reply other threads:[~2022-11-21 12:45 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-11-21 12:43 [PATCH 4.19 00/34] 4.19.266-rc1 review Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 01/34] Revert "x86/speculation: Add RSB VM Exit protections" Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 02/34] Revert "x86/cpu: Add a steppings field to struct x86_cpu_id" Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 03/34] x86/cpufeature: Add facility to check for min microcode revisions Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 04/34] x86/cpufeature: Fix various quality problems in the <asm/cpu_device_hd.h> header Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 05/34] x86/devicetable: Move x86 specific macro out of generic code Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 06/34] x86/cpu: Add consistent CPU match macros Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 07/34] x86/cpu: Add a steppings field to struct x86_cpu_id Greg Kroah-Hartman
2022-11-21 12:43 ` Greg Kroah-Hartman [this message]
2022-11-21 12:43 ` [PATCH 4.19 09/34] x86/bugs: Report AMD retbleed vulnerability Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 10/34] x86/bugs: Add AMD retbleed= boot parameter Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 11/34] x86/bugs: Keep a per-CPU IA32_SPEC_CTRL value Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 12/34] x86/entry: Remove skip_r11rcx Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 13/34] x86/entry: Add kernel IBRS implementation Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 14/34] x86/bugs: Optimize SPEC_CTRL MSR writes Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 15/34] x86/speculation: Add spectre_v2=ibrs option to support Kernel IBRS Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 16/34] x86/bugs: Split spectre_v2_select_mitigation() and spectre_v2_user_select_mitigation() Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 17/34] x86/bugs: Report Intel retbleed vulnerability Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 18/34] intel_idle: Disable IBRS during long idle Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 19/34] x86/speculation: Change FILL_RETURN_BUFFER to work with objtool Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 20/34] x86/speculation: Fix RSB filling with CONFIG_RETPOLINE=n Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 21/34] x86/speculation: Fix firmware entry SPEC_CTRL handling Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 22/34] x86/speculation: Fix SPEC_CTRL write on SMT state change Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 23/34] x86/speculation: Use cached host SPEC_CTRL value for guest entry/exit Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 24/34] x86/speculation: Remove x86_spec_ctrl_mask Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 25/34] KVM: VMX: Prevent guest RSB poisoning attacks with eIBRS Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 26/34] KVM: VMX: Fix IBRS handling after vmexit Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 27/34] x86/speculation: Fill RSB on vmexit for IBRS Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 28/34] x86/common: Stamp out the stepping madness Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 29/34] x86/cpu/amd: Enumerate BTC_NO Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 30/34] x86/bugs: Add Cannon lake to RETBleed affected CPU list Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 31/34] x86/speculation: Disable RRSBA behavior Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 32/34] x86/speculation: Use DECLARE_PER_CPU for x86_spec_ctrl_current Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 33/34] x86/bugs: Warn when "ibrs" mitigation is selected on Enhanced IBRS parts Greg Kroah-Hartman
2022-11-21 12:43 ` [PATCH 4.19 34/34] x86/speculation: Add RSB VM Exit protections Greg Kroah-Hartman
2022-11-21 18:47 ` [PATCH 4.19 00/34] 4.19.266-rc1 review Shuah Khan
2022-11-21 19:02 ` Pavel Machek
2022-11-22 6:29 ` Naresh Kamboju
2022-11-22 10:16 ` Jon Hunter
2022-11-22 16:58 ` Guenter Roeck
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=20221121124151.170180940@linuxfoundation.org \
--to=gregkh@linuxfoundation.org \
--cc=bp@suse.de \
--cc=cascardo@canonical.com \
--cc=jpoimboe@kernel.org \
--cc=patches@lists.linux.dev \
--cc=peterz@infradead.org \
--cc=stable@vger.kernel.org \
--cc=suleiman@google.com \
/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