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Commit 555f3d03 authored by Dave Martin's avatar Dave Martin Committed by Marc Zyngier
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KVM: arm64: Add a capability to advertise SVE support 



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: default avatarDave Martin <Dave.Martin@arm.com>
Reviewed-by: default avatarJulien Thierry <julien.thierry@arm.com>
Tested-by: default avatarzhang.lei <zhang.lei@jp.fujitsu.com>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent 9a3cdf26

arch/arm64/kvm/reset.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

	}

include/uapi/linux/kvm.h

+1 −0
Original line number Diff line number Diff line
@@ -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