Commit 3fab2d10 authored Apr 18, 2019 by Cédric Le Goater Committed by Paul Mackerras Apr 30, 2019

KVM: PPC: Book3S HV: XIVE: Activate XIVE exploitation mode



Full support for the XIVE native exploitation mode is now available,
advertise the capability KVM_CAP_PPC_IRQ_XIVE for guests running on
PowerNV KVM Hypervisors only. Support for nested guests (pseries KVM
Hypervisor) is not yet available. XIVE should also have been activated
which is default setting on POWER9 systems running a recent Linux
kernel.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@ozlabs.org>

parent 232b984b

arch/powerpc/kvm/powerpc.c

+4 −3

Original line number	Diff line number	Diff line
		@@ -573,10 +573,11 @@ int kvm_vm_ioctl_check_extension(struct kvm *kvm, long ext)
		#ifdef CONFIG_KVM_XIVE
		case KVM_CAP_PPC_IRQ_XIVE:
		/*
		* Return false until all the XIVE infrastructure is
		* in place including support for migration.
		* We need XIVE to be enabled on the platform (implies
		* a POWER9 processor) and the PowerNV platform, as
		* nested is not yet supported.
		*/
		r = 0;
		r = xive_enabled() && !!cpu_has_feature(CPU_FTR_HVMODE);
		break;
		#endif