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Commit 0268597c authored by Alexander Graf's avatar Alexander Graf Committed by Avi Kivity
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KVM: PPC: booke: add GS documentation for program interrupt 



The comment for program interrupts triggered when using bookehv was
misleading. Update it to mention why MSR_GS indicates that we have
to inject an interrupt into the guest again, not emulate it.

Signed-off-by: default avatarAlexander Graf <agraf@suse.de>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent c35c9d84

arch/powerpc/kvm/booke.c

+8 −2
Original line number Diff line number Diff line
@@ -685,8 +685,14 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, 


	case BOOKE_INTERRUPT_PROGRAM:

		if (vcpu->arch.shared->msr & (MSR_PR | MSR_GS)) {

			/* Program traps generated by user-level software must be handled

			 * by the guest kernel. */

			/*

			 * Program traps generated by user-level software must

			 * be handled by the guest kernel.

			 *

			 * In GS mode, hypervisor privileged instructions trap

			 * on BOOKE_INTERRUPT_HV_PRIV, not here, so these are

			 * actual program interrupts, handled by the guest.

			 */

			kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr);

			r = RESUME_GUEST;

			kvmppc_account_exit(vcpu, USR_PR_INST);