diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2019-12-21 07:45:04 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-01-13 20:02:53 +0300 |
| commit | b47ce1fed42eeb9ac8c07fcda6c795884826723d (patch) | |
| tree | 0278a4d9fecc2ae1a62c69c6ca9955e5f8750fac /arch/x86/include/asm/vmxfeatures.h | |
| parent | 159348784ff0654291f4c7607fc55e73da8e87e8 (diff) | |
| download | linux-b47ce1fed42eeb9ac8c07fcda6c795884826723d.tar.xz | |
x86/cpu: Detect VMX features on Intel, Centaur and Zhaoxin CPUs
Add an entry in struct cpuinfo_x86 to track VMX capabilities and fill
the capabilities during IA32_FEAT_CTL MSR initialization.
Make the VMX capabilities dependent on IA32_FEAT_CTL and
X86_FEATURE_NAMES so as to avoid unnecessary overhead on CPUs that can't
possibly support VMX, or when /proc/cpuinfo is not available.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20191221044513.21680-11-sean.j.christopherson@intel.com
Diffstat (limited to 'arch/x86/include/asm/vmxfeatures.h')
| -rw-r--r-- | arch/x86/include/asm/vmxfeatures.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/include/asm/vmxfeatures.h b/arch/x86/include/asm/vmxfeatures.h index 4c743ba40ff1..0d04d8bf15a5 100644 --- a/arch/x86/include/asm/vmxfeatures.h +++ b/arch/x86/include/asm/vmxfeatures.h @@ -3,6 +3,11 @@ #define _ASM_X86_VMXFEATURES_H /* + * Defines VMX CPU feature bits + */ +#define NVMXINTS 3 /* N 32-bit words worth of info */ + +/* * Note: If the comment begins with a quoted string, that string is used * in /proc/cpuinfo instead of the macro name. If the string is "", * this feature bit is not displayed in /proc/cpuinfo at all. |