Commit 65d0b0d4 authored Apr 27, 2015 by David Hildenbrand Committed by Christian Borntraeger Jun 20, 2016

KVM: s390: fast path for shadow gmaps in gmap notifier



The default kvm gmap notifier doesn't have to handle shadow gmaps.
So let's just directly exit in case we get notified about one.

Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: David Hildenbrand <dahi@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

parent 01f71917

arch/s390/kvm/kvm-s390.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -1986,6 +1986,8 @@ static void kvm_gmap_notifier(struct gmap *gmap, unsigned long start,
		unsigned long prefix;
		int i;

		if (gmap_is_shadow(gmap))
		return;
		if (start >= 1UL << 31)
		/* We are only interested in prefix pages */
		return;