Hi Dave, On 19/03/2019 17:52, Dave Martin wrote: > To provide a uniform way to check for KVM SVE support amongst other > features, this patch adds a suitable capability KVM_CAP_ARM_SVE, > and reports it as present when SVE is available. > > Signed-off-by: Dave Martin <[email protected]> >
Reviewed-by: Julien Thierry <[email protected]> Cheers, Julien > --- > > Changes since v5: > > * [Julien Thierry] Strip out has_vhe() sanity-check, which wasn't in > the most logical place, and anyway doesn't really belong in this > patch. > > Moved to KVM: arm64/sve: Allow userspace to enable SVE for vcpus > instead. > --- > arch/arm64/kvm/reset.c | 3 +++ > include/uapi/linux/kvm.h | 1 + > 2 files changed, 4 insertions(+) > > diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c > index 4f04dbf..180d7a5 100644 > --- a/arch/arm64/kvm/reset.c > +++ b/arch/arm64/kvm/reset.c > @@ -98,6 +98,9 @@ int kvm_arch_vm_ioctl_check_extension(struct kvm *kvm, long > ext) > case KVM_CAP_ARM_VM_IPA_SIZE: > r = kvm_ipa_limit; > break; > + case KVM_CAP_ARM_SVE: > + r = system_supports_sve(); > + break; > default: > r = 0; > } > diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h > index c3b8e7a..1d56444 100644 > --- a/include/uapi/linux/kvm.h > +++ b/include/uapi/linux/kvm.h > @@ -988,6 +988,7 @@ struct kvm_ppc_resize_hpt { > #define KVM_CAP_ARM_VM_IPA_SIZE 165 > #define KVM_CAP_MANUAL_DIRTY_LOG_PROTECT 166 > #define KVM_CAP_HYPERV_CPUID 167 > +#define KVM_CAP_ARM_SVE 168 > > #ifdef KVM_CAP_IRQ_ROUTING > > -- Julien Thierry _______________________________________________ kvmarm mailing list [email protected] https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
