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Commit 489153c7 authored by Lan Tianyu's avatar Lan Tianyu Committed by Paolo Bonzini
Browse files

KVM/PPC: update the comment of memory barrier in the kvmppc_prepare_to_enter() 



The barrier also orders the write to mode from any reads
to the page tables done and so update the comment.

Signed-off-by: default avatarLan Tianyu <tianyu.lan@intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 0f127d12

arch/powerpc/kvm/powerpc.c

+3 −0
Original line number Diff line number Diff line
@@ -96,6 +96,9 @@ int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) 
		 * so we don't miss a request because the requester sees

		 * OUTSIDE_GUEST_MODE and assumes we'll be checking requests

		 * before next entering the guest (and thus doesn't IPI).

		 * This also orders the write to mode from any reads

		 * to the page tables done while the VCPU is running.

		 * Please see the comment in kvm_flush_remote_tlbs.

		 */

		smp_mb();