linux-kernel - [PATCH 02/11] x86/cpu: Use MWAIT leaf definition

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20241030213314.6F84C490@davehans-spike.ostc.intel.com>
Date: Wed, 30 Oct 2024 14:33:14 -0700
From: Dave Hansen <dave.hansen@...ux.intel.com>
To: linux-kernel@...r.kernel.org
Cc: x86@...nel.org,tglx@...utronix.de,bp@...en8.de,rafael@...nel.org,lenb@...nel.org,Dave Hansen <dave.hansen@...ux.intel.com>
Subject: [PATCH 02/11] x86/cpu: Use MWAIT leaf definition


From: Dave Hansen <dave.hansen@...ux.intel.com>

This dependency array uses hard-coded leaf numbers.  Use the new common
header definition for the MWAIT leaf.

Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com>
---

 b/arch/x86/kernel/cpu/common.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff -puN arch/x86/kernel/cpu/common.c~mwait-leaf-checks-1 arch/x86/kernel/cpu/common.c
--- a/arch/x86/kernel/cpu/common.c~mwait-leaf-checks-1	2024-10-30 12:28:09.562351049 -0700
+++ b/arch/x86/kernel/cpu/common.c	2024-10-30 12:28:09.566351056 -0700
@@ -29,6 +29,7 @@
 
 #include <asm/alternative.h>
 #include <asm/cmdline.h>
+#include <asm/cpuid.h>
 #include <asm/perf_event.h>
 #include <asm/mmu_context.h>
 #include <asm/doublefault.h>
@@ -636,7 +637,7 @@ struct cpuid_dependent_feature {
 
 static const struct cpuid_dependent_feature
 cpuid_dependent_features[] = {
-	{ X86_FEATURE_MWAIT,		0x00000005 },
+	{ X86_FEATURE_MWAIT,		CPUID_MWAIT_LEAF },
 	{ X86_FEATURE_DCA,		0x00000009 },
 	{ X86_FEATURE_XSAVE,		0x0000000d },
 	{ 0, 0 }
_