[PATCH 22/33] KVM: MMU: Ensure freed shadow pages are clean

Signed-off-by: Avi Kivity <[email protected]>

Index: linux-2.6/drivers/kvm/mmu.c
===================================================================
--- linux-2.6.orig/drivers/kvm/mmu.c
+++ linux-2.6/drivers/kvm/mmu.c
@@ -318,6 +318,7 @@ static void kvm_mmu_free_page(struct kvm
 {
 	struct kvm_mmu_page *page_head = page_header(page_hpa);
 
+	ASSERT(is_empty_shadow_page(page_hpa));
 	list_del(&page_head->link);
 	page_head->page_hpa = page_hpa;
 	list_add(&page_head->link, &vcpu->free_pages);
-
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---

• References:
  • [PATCH 0/33] KVM: MMU: Cache shadow page tables
    • From: Avi Kivity <[email protected]>

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