Message ID | 5ec20918b06cad17cb43f04be212c5e21c18caea.1618244920.git.sidcha@amazon.de (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | Add support for XMM fast hypercalls | expand |
On Mon, Apr 12, 2021 at 07:00:17PM +0200, Siddharth Chandrasekaran wrote: > 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@amazon.com> > Cc: Evgeny Iakovlev <eyakovl@amazon.de> > Signed-off-by: Siddharth Chandrasekaran <sidcha@amazon.de> > --- > 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 "output" Wei.
On Mon, Apr 12, 2021 at 08:14:23PM +0000, Wei Liu wrote: > On Mon, Apr 12, 2021 at 07:00:17PM +0200, Siddharth Chandrasekaran wrote: > > 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@amazon.com> > > Cc: Evgeny Iakovlev <eyakovl@amazon.de> > > Signed-off-by: Siddharth Chandrasekaran <sidcha@amazon.de> > > --- > > 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 > > "output" Fixed. Thanks. ~ Sid. Amazon Development Center Germany GmbH Krausenstr. 38 10117 Berlin Geschaeftsfuehrung: Christian Schlaeger, Jonathan Weiss Eingetragen am Amtsgericht Charlottenburg unter HRB 149173 B Sitz: Berlin Ust-ID: DE 289 237 879
Siddharth Chandrasekaran <sidcha@amazon.de> 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@amazon.com> > Cc: Evgeny Iakovlev <eyakovl@amazon.de> > Signed-off-by: Siddharth Chandrasekaran <sidcha@amazon.de> > --- > 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@redhat.com>
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;
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@amazon.com> Cc: Evgeny Iakovlev <eyakovl@amazon.de> Signed-off-by: Siddharth Chandrasekaran <sidcha@amazon.de> --- arch/x86/include/asm/hyperv-tlfs.h | 7 ++++++- arch/x86/kvm/hyperv.c | 2 ++ 2 files changed, 8 insertions(+), 1 deletion(-)