[PATCH] KVM: MMU: kvm_mmu_put_page() only removes one link to the page
... and so must not free it unconditionally. Move the freeing to kvm_mmu_zap_page(). 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>
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@ -521,10 +521,6 @@ static void kvm_mmu_put_page(struct kvm_vcpu *vcpu,
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u64 *parent_pte)
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{
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mmu_page_remove_parent_pte(page, parent_pte);
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kvm_mmu_page_unlink_children(vcpu, page);
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hlist_del(&page->hash_link);
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list_del(&page->link);
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list_add(&page->link, &vcpu->free_pages);
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}
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static void kvm_mmu_zap_page(struct kvm_vcpu *vcpu,
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@ -546,6 +542,10 @@ static void kvm_mmu_zap_page(struct kvm_vcpu *vcpu,
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kvm_mmu_put_page(vcpu, page, parent_pte);
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*parent_pte = 0;
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}
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kvm_mmu_page_unlink_children(vcpu, page);
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hlist_del(&page->hash_link);
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list_del(&page->link);
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list_add(&page->link, &vcpu->free_pages);
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}
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static int kvm_mmu_unprotect_page(struct kvm_vcpu *vcpu, gfn_t gfn)
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