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Commit 23528bb2 authored by Sam Bobroff's avatar Sam Bobroff Committed by Paolo Bonzini
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KVM: PPC: Introduce KVM_CAP_PPC_HTM 



Introduce a new KVM capability, KVM_CAP_PPC_HTM, that can be queried to
determine if a PowerPC KVM guest should use HTM (Hardware Transactional
Memory).

This will be used by QEMU to populate the pa-features bits in the
guest's device tree.

Signed-off-by: default avatarSam Bobroff <sam.bobroff@au1.ibm.com>
Reviewed-by: default avatarDavid Gibson <david@gibson.dropbear.id.au>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 40a2df49

arch/powerpc/kvm/powerpc.c

+4 −0
Original line number Original line Diff line number Diff line
@@ -588,6 +588,10 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext) 
		r = 1;

		r = 1;

		break;

		break;

#endif

#endif

	case KVM_CAP_PPC_HTM:

		r = cpu_has_feature(CPU_FTR_TM_COMP) &&

		    is_kvmppc_hv_enabled(kvm);

		break;

	default:

	default:

		r = 0;

		r = 0;

		break;

		break;

include/uapi/linux/kvm.h

+1 −0
Original line number Original line Diff line number Diff line
@@ -869,6 +869,7 @@ struct kvm_ppc_smmu_info { 
#define KVM_CAP_X2APIC_API 129

#define KVM_CAP_X2APIC_API 129

#define KVM_CAP_S390_USER_INSTR0 130

#define KVM_CAP_S390_USER_INSTR0 130

#define KVM_CAP_MSI_DEVID 131

#define KVM_CAP_MSI_DEVID 131

#define KVM_CAP_PPC_HTM 132





#ifdef KVM_CAP_IRQ_ROUTING

#ifdef KVM_CAP_IRQ_ROUTING