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x86/kvm: Add Hygon Dhyana support to KVM

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The Hygon Dhyana CPU has the SVM feature as AMD family 17h does.
So enable the KVM infrastructure support to it.

Signed-off-by: Pu Wen <puwen@hygon.cn>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Cc: pbonzini@redhat.com
Cc: rkrcmar@redhat.com
Cc: tglx@linutronix.de
Cc: mingo@redhat.com
Cc: hpa@zytor.com
Cc: x86@kernel.org
Cc: thomas.lendacky@amd.com
Cc: kvm@vger.kernel.org
Link: https://lkml.kernel.org/r/654dd12876149fba9561698eaf9fc15d030301f8.1537533369.git.puwen@hygon.cn
This commit is contained in:
Pu Wen 2018-09-23 17:36:31 +08:00 committed by Borislav Petkov
parent ac78bd7235
commit b8f4abb652
3 changed files with 17 additions and 3 deletions
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4
arch/x86/include/asm/kvm_emulate.h
View File

@ -364,6 +364,10 @@ struct x86_emulate_ctxt {
#define X86EMUL_CPUID_VENDOR_AMDisbetterI_ecx 0x21726574
#define X86EMUL_CPUID_VENDOR_AMDisbetterI_edx 0x74656273
#define X86EMUL_CPUID_VENDOR_HygonGenuine_ebx 0x6f677948
#define X86EMUL_CPUID_VENDOR_HygonGenuine_ecx 0x656e6975
#define X86EMUL_CPUID_VENDOR_HygonGenuine_edx 0x6e65476e
#define X86EMUL_CPUID_VENDOR_GenuineIntel_ebx 0x756e6547
#define X86EMUL_CPUID_VENDOR_GenuineIntel_ecx 0x6c65746e
#define X86EMUL_CPUID_VENDOR_GenuineIntel_edx 0x49656e69

5
arch/x86/include/asm/virtext.h
View File

@ -83,9 +83,10 @@ static inline void cpu_emergency_vmxoff(void)
*/
static inline int cpu_has_svm(const char **msg)
{
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD) {
if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD &&
boot_cpu_data.x86_vendor != X86_VENDOR_HYGON) {
if (msg)
*msg = "not amd";
*msg = "not amd or hygon";
return 0;
}

11
arch/x86/kvm/emulate.c
View File

@ -2711,7 +2711,16 @@ static bool em_syscall_is_enabled(struct x86_emulate_ctxt *ctxt)
edx == X86EMUL_CPUID_VENDOR_AMDisbetterI_edx)
return true;
/* default: (not Intel, not AMD), apply Intel's stricter rules... */
/* Hygon ("HygonGenuine") */
if (ebx == X86EMUL_CPUID_VENDOR_HygonGenuine_ebx &&
ecx == X86EMUL_CPUID_VENDOR_HygonGenuine_ecx &&
edx == X86EMUL_CPUID_VENDOR_HygonGenuine_edx)
return true;
/*
* default: (not Intel, not AMD, not Hygon), apply Intel's
* stricter rules...
*/
return false;
}