The following commit has been merged into the x86/cpu branch of tip: Commit-ID: 501444905fcb4166589fda99497c273ac5efc65e Gitweb: https://git.kernel.org/tip/501444905fcb4166589fda99497c273ac5efc65e Author: Sean Christopherson <sean.j.christopherson@xxxxxxxxx> AuthorDate: Fri, 20 Dec 2019 20:45:00 -08:00 Committer: Borislav Petkov <bp@xxxxxxx> CommitterDate: Mon, 13 Jan 2020 17:48:36 +01:00 x86/centaur: Use common IA32_FEAT_CTL MSR initialization Use the recently added IA32_FEAT_CTL MSR initialization sequence to opportunistically enable VMX support when running on a Centaur CPU. Signed-off-by: Sean Christopherson <sean.j.christopherson@xxxxxxxxx> Signed-off-by: Borislav Petkov <bp@xxxxxxx> Link: https://lkml.kernel.org/r/20191221044513.21680-7-sean.j.christopherson@xxxxxxxxx --- arch/x86/Kconfig.cpu | 2 +- arch/x86/kernel/cpu/centaur.c | 2 ++ 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/Kconfig.cpu b/arch/x86/Kconfig.cpu index 98be76f..cba5b64 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 + depends on CPU_SUP_INTEL || CPU_SUP_CENTAUR menuconfig PROCESSOR_SELECT bool "Supported processor vendors" if EXPERT diff --git a/arch/x86/kernel/cpu/centaur.c b/arch/x86/kernel/cpu/centaur.c index 14433ff..084f604 100644 --- a/arch/x86/kernel/cpu/centaur.c +++ b/arch/x86/kernel/cpu/centaur.c @@ -250,6 +250,8 @@ static void init_centaur(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)) centaur_detect_vmx_virtcap(c); }
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