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x86/zhaoxin: Use common IA32_FEAT_CTL MSR initialization

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Use the recently added IA32_FEAT_CTL MSR initialization sequence to
opportunistically enable VMX support when running on a Zhaoxin CPU.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20191221044513.21680-8-sean.j.christopherson@intel.com
This commit is contained in:
Sean Christopherson 2019-12-20 20:45:01 -08:00 committed by Borislav Petkov
parent 501444905f
commit 7d37953ba8
2 changed files with 3 additions and 1 deletions
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2
arch/x86/Kconfig.cpu
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@ -389,7 +389,7 @@ config X86_DEBUGCTLMSR
config IA32_FEAT_CTL
def_bool y
depends on CPU_SUP_INTEL || CPU_SUP_CENTAUR
depends on CPU_SUP_INTEL || CPU_SUP_CENTAUR || CPU_SUP_ZHAOXIN
menuconfig PROCESSOR_SELECT
bool "Supported processor vendors" if EXPERT

2
arch/x86/kernel/cpu/zhaoxin.c
View file

@ -141,6 +141,8 @@ static void init_zhaoxin(struct cpuinfo_x86 *c)
set_cpu_cap(c, X86_FEATURE_LFENCE_RDTSC);
#endif
init_ia32_feat_ctl(c);
if (cpu_has(c, X86_FEATURE_VMX))
zhaoxin_detect_vmx_virtcap(c);
}