[PATCH] KVM: MMU: Free pages on kvm destruction

Because mmu pages have attached rmap and parent pte chain structures, we need
to zap them before freeing so the attached structures are freed.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/kvm/mmu.c b/drivers/kvm/mmu.c
index f163214..0bd2a19 100644 (file)
--- a/drivers/kvm/mmu.c
+++ b/drivers/kvm/mmu.c
@@ -1065,9 +1065,14 @@ EXPORT_SYMBOL_GPL(kvm_mmu_free_some_pages);
 
 static void free_mmu_pages(struct kvm_vcpu *vcpu)
 {
-       while (!list_empty(&vcpu->free_pages)) {
-               struct kvm_mmu_page *page;
+       struct kvm_mmu_page *page;
 
+       while (!list_empty(&vcpu->kvm->active_mmu_pages)) {
+               page = container_of(vcpu->kvm->active_mmu_pages.next,
+                                   struct kvm_mmu_page, link);
+               kvm_mmu_zap_page(vcpu, page);
+       }
+       while (!list_empty(&vcpu->free_pages)) {
                page = list_entry(vcpu->free_pages.next,
                                  struct kvm_mmu_page, link);
                list_del(&page->link);