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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/intel.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/intel.c')
| -rw-r--r-- | arch/x86/kernel/cpu/intel.c | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 9129c170ea11..57473e2c0869 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -494,52 +494,6 @@ static void srat_detect_node(struct cpuinfo_x86 *c) #endif } -static void detect_vmx_virtcap(struct cpuinfo_x86 *c) -{ - /* Intel VMX MSR indicated features */ -#define X86_VMX_FEATURE_PROC_CTLS_TPR_SHADOW 0x00200000 -#define X86_VMX_FEATURE_PROC_CTLS_VNMI 0x00400000 -#define X86_VMX_FEATURE_PROC_CTLS_2ND_CTLS 0x80000000 -#define X86_VMX_FEATURE_PROC_CTLS2_VIRT_APIC 0x00000001 -#define X86_VMX_FEATURE_PROC_CTLS2_EPT 0x00000002 -#define X86_VMX_FEATURE_PROC_CTLS2_VPID 0x00000020 -#define x86_VMX_FEATURE_EPT_CAP_AD 0x00200000 - - u32 vmx_msr_low, vmx_msr_high, msr_ctl, msr_ctl2; - u32 msr_vpid_cap, msr_ept_cap; - - clear_cpu_cap(c, X86_FEATURE_TPR_SHADOW); - clear_cpu_cap(c, X86_FEATURE_VNMI); - clear_cpu_cap(c, X86_FEATURE_FLEXPRIORITY); - clear_cpu_cap(c, X86_FEATURE_EPT); - clear_cpu_cap(c, X86_FEATURE_VPID); - clear_cpu_cap(c, X86_FEATURE_EPT_AD); - - rdmsr(MSR_IA32_VMX_PROCBASED_CTLS, vmx_msr_low, vmx_msr_high); - msr_ctl = vmx_msr_high | vmx_msr_low; - if (msr_ctl & X86_VMX_FEATURE_PROC_CTLS_TPR_SHADOW) - set_cpu_cap(c, X86_FEATURE_TPR_SHADOW); - if (msr_ctl & X86_VMX_FEATURE_PROC_CTLS_VNMI) - set_cpu_cap(c, X86_FEATURE_VNMI); - if (msr_ctl & X86_VMX_FEATURE_PROC_CTLS_2ND_CTLS) { - rdmsr(MSR_IA32_VMX_PROCBASED_CTLS2, - vmx_msr_low, vmx_msr_high); - msr_ctl2 = vmx_msr_high | vmx_msr_low; - if ((msr_ctl2 & X86_VMX_FEATURE_PROC_CTLS2_VIRT_APIC) && - (msr_ctl & X86_VMX_FEATURE_PROC_CTLS_TPR_SHADOW)) - set_cpu_cap(c, X86_FEATURE_FLEXPRIORITY); - if (msr_ctl2 & X86_VMX_FEATURE_PROC_CTLS2_EPT) { - set_cpu_cap(c, X86_FEATURE_EPT); - rdmsr(MSR_IA32_VMX_EPT_VPID_CAP, - msr_ept_cap, msr_vpid_cap); - if (msr_ept_cap & x86_VMX_FEATURE_EPT_CAP_AD) - set_cpu_cap(c, X86_FEATURE_EPT_AD); - } - if (msr_ctl2 & X86_VMX_FEATURE_PROC_CTLS2_VPID) - set_cpu_cap(c, X86_FEATURE_VPID); - } -} - #define MSR_IA32_TME_ACTIVATE 0x982 /* Helpers to access TME_ACTIVATE MSR */ @@ -757,9 +711,6 @@ static void init_intel(struct cpuinfo_x86 *c) init_ia32_feat_ctl(c); - if (cpu_has(c, X86_FEATURE_VMX)) - detect_vmx_virtcap(c); - if (cpu_has(c, X86_FEATURE_TME)) detect_tme(c); |