diff options
| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2020-03-04 17:34:33 -0800 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-03-16 17:58:48 +0100 |
| commit | 23493d0a1731205a4bccaa0e283da642ca6f6e29 (patch) | |
| tree | 240b96d31077caa24fb5969859e0d1da91a75df4 /arch | |
| parent | 15608ed03f10a1414188612b0ee9653e3c78bbd9 (diff) | |
| download | lwn-23493d0a1731205a4bccaa0e283da642ca6f6e29.tar.gz lwn-23493d0a1731205a4bccaa0e283da642ca6f6e29.zip | |
KVM x86: Extend AMD specific guest behavior to Hygon virtual CPUs
Extend guest_cpuid_is_amd() to cover Hygon virtual CPUs and rename it
accordingly. Hygon CPUs use an AMD-based core and so have the same
basic behavior as AMD CPUs.
Fixes: b8f4abb652146 ("x86/kvm: Add Hygon Dhyana support to KVM")
Cc: Pu Wen <puwen@hygon.cn>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/cpuid.h | 6 | ||||
| -rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 3 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 2 |
4 files changed, 8 insertions, 5 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index a25b520d26c9..ec91b9b127fa 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -946,7 +946,7 @@ bool kvm_cpuid(struct kvm_vcpu *vcpu, u32 *eax, u32 *ebx, * requested. AMD CPUID semantics returns all zeroes for any * undefined leaf, whether or not the leaf is in range. */ - if (!entry && check_limit && !guest_cpuid_is_amd(vcpu) && + if (!entry && check_limit && !guest_cpuid_is_amd_or_hygon(vcpu) && !cpuid_function_in_range(vcpu, function)) { max = kvm_find_cpuid_entry(vcpu, 0, 0); if (max) { diff --git a/arch/x86/kvm/cpuid.h b/arch/x86/kvm/cpuid.h index cccfd854aacf..a0988609f620 100644 --- a/arch/x86/kvm/cpuid.h +++ b/arch/x86/kvm/cpuid.h @@ -214,12 +214,14 @@ static __always_inline void guest_cpuid_clear(struct kvm_vcpu *vcpu, *reg &= ~__feature_bit(x86_feature); } -static inline bool guest_cpuid_is_amd(struct kvm_vcpu *vcpu) +static inline bool guest_cpuid_is_amd_or_hygon(struct kvm_vcpu *vcpu) { struct kvm_cpuid_entry2 *best; best = kvm_find_cpuid_entry(vcpu, 0, 0); - return best && is_guest_vendor_amd(best->ebx, best->ecx, best->edx); + return best && + (is_guest_vendor_amd(best->ebx, best->ecx, best->edx) || + is_guest_vendor_hygon(best->ebx, best->ecx, best->edx)); } static inline int guest_cpuid_family(struct kvm_vcpu *vcpu) diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index 554546948e87..f1eb2d3e1f40 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -4510,7 +4510,8 @@ static void reset_rsvds_bits_mask(struct kvm_vcpu *vcpu, cpuid_maxphyaddr(vcpu), context->root_level, context->nx, guest_cpuid_has(vcpu, X86_FEATURE_GBPAGES), - is_pse(vcpu), guest_cpuid_is_amd(vcpu)); + is_pse(vcpu), + guest_cpuid_is_amd_or_hygon(vcpu)); } static void diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 96e897d38a63..cda0b787b2e3 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -2550,7 +2550,7 @@ static void kvmclock_sync_fn(struct work_struct *work) static bool can_set_mci_status(struct kvm_vcpu *vcpu) { /* McStatusWrEn enabled? */ - if (guest_cpuid_is_amd(vcpu)) + if (guest_cpuid_is_amd_or_hygon(vcpu)) return !!(vcpu->arch.msr_hwcr & BIT_ULL(18)); return false; |