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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2019-12-20 20:45:06 -0800 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2020-01-13 18:43:19 +0100 |
| commit | 167a4894c113ebe6a1f8b24fa6f9fca849c77f8a (patch) | |
| tree | 8e3237206404b9244578e42360e391f9178f51f2 /arch/x86/kernel/cpu/feat_ctl.c | |
| parent | 14442a159cf488c05bd5639c9fd5665385b9ab39 (diff) | |
| download | linux-167a4894c113ebe6a1f8b24fa6f9fca849c77f8a.tar.bz2 | |
x86/cpu: Set synthetic VMX cpufeatures during init_ia32_feat_ctl()
Set the synthetic VMX cpufeatures, which need to be kept to preserve
/proc/cpuinfo's ABI, in the common IA32_FEAT_CTL initialization code.
Remove the vendor code that manually sets the synthetic flags.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20191221044513.21680-13-sean.j.christopherson@intel.com
Diffstat (limited to 'arch/x86/kernel/cpu/feat_ctl.c')
| -rw-r--r-- | arch/x86/kernel/cpu/feat_ctl.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/feat_ctl.c b/arch/x86/kernel/cpu/feat_ctl.c index cbd8bfe9b87b..fcbb35533cef 100644 --- a/arch/x86/kernel/cpu/feat_ctl.c +++ b/arch/x86/kernel/cpu/feat_ctl.c @@ -75,6 +75,20 @@ static void init_vmx_capabilities(struct cpuinfo_x86 *c) (c->vmx_capability[SECONDARY_CTLS] & VMX_F(VIRT_INTR_DELIVERY)) && (c->vmx_capability[MISC_FEATURES] & VMX_F(POSTED_INTR))) c->vmx_capability[MISC_FEATURES] |= VMX_F(APICV); + + /* Set the synthetic cpufeatures to preserve /proc/cpuinfo's ABI. */ + if (c->vmx_capability[PRIMARY_CTLS] & VMX_F(VIRTUAL_TPR)) + set_cpu_cap(c, X86_FEATURE_TPR_SHADOW); + if (c->vmx_capability[MISC_FEATURES] & VMX_F(FLEXPRIORITY)) + set_cpu_cap(c, X86_FEATURE_FLEXPRIORITY); + if (c->vmx_capability[MISC_FEATURES] & VMX_F(VIRTUAL_NMIS)) + set_cpu_cap(c, X86_FEATURE_VNMI); + if (c->vmx_capability[SECONDARY_CTLS] & VMX_F(EPT)) + set_cpu_cap(c, X86_FEATURE_EPT); + if (c->vmx_capability[MISC_FEATURES] & VMX_F(EPT_AD)) + set_cpu_cap(c, X86_FEATURE_EPT_AD); + if (c->vmx_capability[MISC_FEATURES] & VMX_F(VPID)) + set_cpu_cap(c, X86_FEATURE_VPID); } #endif /* CONFIG_X86_VMX_FEATURE_NAMES */ |