From 414bb144efa2d2fe16d104d836d0d6b6e9265788 Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Mon, 14 Dec 2009 13:08:41 +0100 Subject: [PATCH] x86, cpu: Print AMD virtualization features in /proc/cpuinfo This patch adds code to cpu initialization path to detect the extended virtualization features of AMD cpus to show them in /proc/cpuinfo. Signed-off-by: Joerg Roedel LKML-Reference: <1260792521-15212-1-git-send-email-joerg.roedel@amd.com> Signed-off-by: H. Peter Anvin --- arch/x86/include/asm/cpufeature.h | 4 ++++ arch/x86/kernel/cpu/addon_cpuid_features.c | 4 ++++ 2 files changed, 8 insertions(+) diff --git a/arch/x86/include/asm/cpufeature.h b/arch/x86/include/asm/cpufeature.h index 637e1ec963c3..0cd82d068613 100644 --- a/arch/x86/include/asm/cpufeature.h +++ b/arch/x86/include/asm/cpufeature.h @@ -168,6 +168,10 @@ #define X86_FEATURE_FLEXPRIORITY (8*32+ 2) /* Intel FlexPriority */ #define X86_FEATURE_EPT (8*32+ 3) /* Intel Extended Page Table */ #define X86_FEATURE_VPID (8*32+ 4) /* Intel Virtual Processor ID */ +#define X86_FEATURE_NPT (8*32+5) /* AMD Nested Page Table support */ +#define X86_FEATURE_LBRV (8*32+6) /* AMD LBR Virtualization support */ +#define X86_FEATURE_SVML (8*32+7) /* "svm_lock" AMD SVM locking MSR */ +#define X86_FEATURE_NRIPS (8*32+8) /* "nrip_save" AMD SVM next_rip save */ #if defined(__KERNEL__) && !defined(__ASSEMBLY__) diff --git a/arch/x86/kernel/cpu/addon_cpuid_features.c b/arch/x86/kernel/cpu/addon_cpuid_features.c index 468489b57aae..97ad79cdf688 100644 --- a/arch/x86/kernel/cpu/addon_cpuid_features.c +++ b/arch/x86/kernel/cpu/addon_cpuid_features.c @@ -32,6 +32,10 @@ void __cpuinit init_scattered_cpuid_features(struct cpuinfo_x86 *c) static const struct cpuid_bit __cpuinitconst cpuid_bits[] = { { X86_FEATURE_IDA, CR_EAX, 1, 0x00000006 }, { X86_FEATURE_ARAT, CR_EAX, 2, 0x00000006 }, + { X86_FEATURE_NPT, CR_EDX, 0, 0x8000000a }, + { X86_FEATURE_LBRV, CR_EDX, 1, 0x8000000a }, + { X86_FEATURE_SVML, CR_EDX, 2, 0x8000000a }, + { X86_FEATURE_NRIPS, CR_EDX, 3, 0x8000000a }, { 0, 0, 0, 0 } }; -- 2.39.2