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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2019-12-20 20:45:04 -0800 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-01-13 18:02:53 +0100 |
| commit | b47ce1fed42eeb9ac8c07fcda6c795884826723d (patch) | |
| tree | 0278a4d9fecc2ae1a62c69c6ca9955e5f8750fac /arch/x86/Kconfig.cpu | |
| parent | 159348784ff0654291f4c7607fc55e73da8e87e8 (diff) | |
| download | linux-b47ce1fed42eeb9ac8c07fcda6c795884826723d.tar.bz2 | |
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/Kconfig.cpu')
| -rw-r--r-- | arch/x86/Kconfig.cpu | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index 526425fcaedc..bc3a497c029c 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -391,6 +391,10 @@ config IA32_FEAT_CTL def_bool y depends on CPU_SUP_INTEL || CPU_SUP_CENTAUR || CPU_SUP_ZHAOXIN +config X86_VMX_FEATURE_NAMES + def_bool y + depends on IA32_FEAT_CTL && X86_FEATURE_NAMES + menuconfig PROCESSOR_SELECT bool "Supported processor vendors" if EXPERT ---help--- |