diff options
| author |   Siddharth Chandrasekaran <sidcha@amazon.de> | 2021-05-26 11:03:56 +0200 |
|---|---|---|
| committer |   Paolo Bonzini <pbonzini@redhat.com> | 2021-06-17 13:09:24 -0400 |
| commit | d8f5537a8816c8f00ea3103e74b65987963a56c6 (patch) | |
| tree | 4b268a2886c74b23acfd3858d3b4893bc0616b9f | |
| parent | KVM: x86: kvm_hv_flush_tlb use inputs from XMM registers (diff) | |
| download | linux-dev-d8f5537a8816c8f00ea3103e74b65987963a56c6.tar.xz linux-dev-d8f5537a8816c8f00ea3103e74b65987963a56c6.zip | |
KVM: hyper-v: Advertise support for fast XMM hypercalls
Now that kvm_hv_flush_tlb() has been patched to support XMM hypercall
inputs, we can start advertising this feature to guests.
Cc: Alexander Graf <graf@amazon.com>
Cc: Evgeny Iakovlev <eyakovl@amazon.de>
Signed-off-by: Siddharth Chandrasekaran <sidcha@amazon.de>
Message-Id: <e63fc1c61dd2efecbefef239f4f0a598bd552750.1622019134.git.sidcha@amazon.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
| -rw-r--r-- | arch/x86/include/asm/hyperv-tlfs.h | 7 | ||||
| -rw-r--r-- | arch/x86/kvm/hyperv.c | 1 |
2 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h index 27a9f08e8386..9fe4cc9c0f7d 100644 --- a/arch/x86/include/asm/hyperv-tlfs.h +++ b/arch/x86/include/asm/hyperv-tlfs.h @@ -52,7 +52,7 @@ * Support for passing hypercall input parameter block via XMM * registers is available */ -#define HV_X64_HYPERCALL_PARAMS_XMM_AVAILABLE BIT(4) +#define HV_X64_HYPERCALL_XMM_INPUT_AVAILABLE BIT(4) /* Support for a virtual guest idle state is available */ #define HV_X64_GUEST_IDLE_STATE_AVAILABLE BIT(5) /* Frequency MSRs available */ @@ -61,6 +61,11 @@ #define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE BIT(10) /* Support for debug MSRs available */ #define HV_FEATURE_DEBUG_MSRS_AVAILABLE BIT(11) +/* + * Support for returning hypercall output block via XMM + * registers is available + */ +#define HV_X64_HYPERCALL_XMM_OUTPUT_AVAILABLE BIT(15) /* stimer Direct Mode is available */ #define HV_STIMER_DIRECT_MODE_AVAILABLE BIT(19) diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index 449589e283d6..dbd3152b1379 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -2243,6 +2243,7 @@ int kvm_get_hv_cpuid(struct kvm_vcpu *vcpu, struct kvm_cpuid2 *cpuid, ent->ebx |= HV_POST_MESSAGES; ent->ebx |= HV_SIGNAL_EVENTS; + ent->edx |= HV_X64_HYPERCALL_XMM_INPUT_AVAILABLE; ent->edx |= HV_FEATURE_FREQUENCY_MSRS_AVAILABLE; ent->edx |= HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE; |