From f599c5cbcaa13a93215d2f260815d29f265a4457 Mon Sep 17 00:00:00 2001 From: Izik Eidus Date: Thu, 6 Aug 2009 14:40:05 -0300 Subject: [PATCH] KVM: Fix dirty bit tracking for slots with large pages (cherry picked from commit e244584fe3a5c20deddeca246548ac86dbc6e1d1) When slot is already allocated and being asked to be tracked we need to break the large pages. This code flush the mmu when someone ask a slot to start dirty bit tracking. Signed-off-by: Izik Eidus Signed-off-by: Avi Kivity Signed-off-by: Greg Kroah-Hartman --- virt/kvm/kvm_main.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 53ab86d46698..db062b538b6f 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -550,6 +550,8 @@ int __kvm_set_memory_region(struct kvm *kvm, if (!new.dirty_bitmap) goto out_free; memset(new.dirty_bitmap, 0, dirty_bytes); + if (old.npages) + kvm_arch_flush_shadow(kvm); } #endif /* not defined CONFIG_S390 */ -- 2.47.3