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Commit d69c6436 authored by Alexander Graf's avatar Alexander Graf
Browse files

KVM: PPC: BookE: Add support for vcpu->mode 



Generic KVM code might want to know whether we are inside guest context
or outside. It also wants to be able to push us out of guest context.

Add support to the BookE code for the generic vcpu->mode field that describes
the above states.

Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
parent 4ffc6356

arch/powerpc/kvm/booke.c

+11 −0
Original line number Diff line number Diff line
@@ -501,6 +501,15 @@ static int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) 
			continue;

		}



		if (vcpu->mode == EXITING_GUEST_MODE) {

			r = 1;

			break;

		}



		/* Going into guest context! Yay! */

		vcpu->mode = IN_GUEST_MODE;

		smp_wmb();



		break;

	}
@@ -572,6 +581,8 @@ int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) 
	kvm_guest_exit();



out:

	vcpu->mode = OUTSIDE_GUEST_MODE;

	smp_wmb();

	local_irq_enable();

	return ret;

}