linux-kernel - [tip:x86/urgent] x86/cpufeature, kvm/svm: Rename (shorten) the new "virtualized VMSAVE/VMLOAD" CPUID flag

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Message-ID: <tip-5442c26995527245c94c4a49e535eae8a60a5299@git.kernel.org>
Date:   Fri, 11 Aug 2017 05:13:07 -0700
From:   tip-bot for Borislav Petkov <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     hpa@...or.com, rkrcmar@...hat.com, peterz@...radead.org,
        tglx@...utronix.de, linux-kernel@...r.kernel.org,
        Janakarajan.Natarajan@....com, torvalds@...ux-foundation.org,
        joro@...tes.org, kvm@...r.kernel.org, mingo@...nel.org, bp@...e.de,
        pbonzini@...hat.com
Subject: [tip:x86/urgent] x86/cpufeature, kvm/svm: Rename (shorten) the new
 "virtualized VMSAVE/VMLOAD" CPUID flag

Commit-ID:  5442c26995527245c94c4a49e535eae8a60a5299
Gitweb:     http://git.kernel.org/tip/5442c26995527245c94c4a49e535eae8a60a5299
Author:     Borislav Petkov <bp@...e.de>
AuthorDate: Tue, 1 Aug 2017 20:55:52 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 11 Aug 2017 13:42:28 +0200

x86/cpufeature, kvm/svm: Rename (shorten) the new "virtualized VMSAVE/VMLOAD" CPUID flag

"virtual_vmload_vmsave" is what is going to land in /proc/cpuinfo now
as per v4.13-rc4, for a single feature bit which is clearly too long.

So rename it to what it is called in the processor manual.
"v_vmsave_vmload" is a bit shorter, after all.

We could go more aggressively here but having it the same as in the
processor manual is advantageous.

Signed-off-by: Borislav Petkov <bp@...e.de>
Acked-by: Radim Krčmář <rkrcmar@...hat.com>
Cc: Janakarajan Natarajan <Janakarajan.Natarajan@....com>
Cc: Jörg Rödel <joro@...tes.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Paolo Bonzini <pbonzini@...hat.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: kvm-ML <kvm@...r.kernel.org>
Link: http://lkml.kernel.org/r/20170801185552.GA3743@nazgul.tnic
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/include/asm/cpufeatures.h | 2 +-
 arch/x86/kvm/svm.c                 | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/include/asm/cpufeatures.h b/arch/x86/include/asm/cpufeatures.h
index ca3c48c..5a28e8e 100644
--- a/arch/x86/include/asm/cpufeatures.h
+++ b/arch/x86/include/asm/cpufeatures.h
@@ -286,7 +286,7 @@
 #define X86_FEATURE_PAUSEFILTER (15*32+10) /* filtered pause intercept */
 #define X86_FEATURE_PFTHRESHOLD (15*32+12) /* pause filter threshold */
 #define X86_FEATURE_AVIC	(15*32+13) /* Virtual Interrupt Controller */
-#define X86_FEATURE_VIRTUAL_VMLOAD_VMSAVE (15*32+15) /* Virtual VMLOAD VMSAVE */
+#define X86_FEATURE_V_VMSAVE_VMLOAD (15*32+15) /* Virtual VMSAVE VMLOAD */
 
 /* Intel-defined CPU features, CPUID level 0x00000007:0 (ecx), word 16 */
 #define X86_FEATURE_AVX512VBMI  (16*32+ 1) /* AVX512 Vector Bit Manipulation instructions*/
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 1107626..56ba053 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1100,7 +1100,7 @@ static __init int svm_hardware_setup(void)
 
 	if (vls) {
 		if (!npt_enabled ||
-		    !boot_cpu_has(X86_FEATURE_VIRTUAL_VMLOAD_VMSAVE) ||
+		    !boot_cpu_has(X86_FEATURE_V_VMSAVE_VMLOAD) ||
 		    !IS_ENABLED(CONFIG_X86_64)) {
 			vls = false;
 		} else {