Siddharth Chandrasekaran <sidcha@xxxxxxxxx> writes: > Now that all extant hypercalls that can use XMM registers (based on > spec) for input/outputs are patched to support them, we can start > advertising this feature to guests. > > Cc: Alexander Graf <graf@xxxxxxxxxx> > Cc: Evgeny Iakovlev <eyakovl@xxxxxxxxx> > Signed-off-by: Siddharth Chandrasekaran <sidcha@xxxxxxxxx> > --- > arch/x86/include/asm/hyperv-tlfs.h | 7 ++++++- > arch/x86/kvm/hyperv.c | 2 ++ > 2 files changed, 8 insertions(+), 1 deletion(-) > > diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h > index e6cd3fee562b..716f12be411e 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 ouput 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 1f9959aba70d..55838c266bcd 100644 > --- a/arch/x86/kvm/hyperv.c > +++ b/arch/x86/kvm/hyperv.c > @@ -2254,6 +2254,8 @@ 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_X64_HYPERCALL_XMM_OUTPUT_AVAILABLE; > ent->edx |= HV_FEATURE_FREQUENCY_MSRS_AVAILABLE; > ent->edx |= HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE; With 'ouput' typo fixed, Reviewed-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx> -- Vitaly
