Use the recently added IA32_FEAT_CTL MSR initialization sequence to opportunstically enable VMX support when running on a Zhaoxin CPU.
Signed-off-by: Sean Christopherson sean.j.christopherson@intel.com --- arch/x86/Kconfig.cpu | 2 +- arch/x86/kernel/cpu/zhaoxin.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index cba5b64266df..526425fcaedc 100644 --- a/arch/x86/Kconfig.cpu +++ b/arch/x86/Kconfig.cpu @@ -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 diff --git a/arch/x86/kernel/cpu/zhaoxin.c b/arch/x86/kernel/cpu/zhaoxin.c index 8e6f2f4b4afe..630a1450ea70 100644 --- a/arch/x86/kernel/cpu/zhaoxin.c +++ b/arch/x86/kernel/cpu/zhaoxin.c @@ -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); }