提交 cc4529ef 编写于 作者: A Avi Kivity 提交者: Linus Torvalds

[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: NAvi Kivity <avi@qumranet.com>
Acked-by: NIngo Molnar <mingo@elte.hu>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 697fe2e2
...@@ -521,10 +521,6 @@ static void kvm_mmu_put_page(struct kvm_vcpu *vcpu, ...@@ -521,10 +521,6 @@ static void kvm_mmu_put_page(struct kvm_vcpu *vcpu,
u64 *parent_pte) u64 *parent_pte)
{ {
mmu_page_remove_parent_pte(page, parent_pte); mmu_page_remove_parent_pte(page, parent_pte);
kvm_mmu_page_unlink_children(vcpu, page);
hlist_del(&page->hash_link);
list_del(&page->link);
list_add(&page->link, &vcpu->free_pages);
} }
static void kvm_mmu_zap_page(struct kvm_vcpu *vcpu, static void kvm_mmu_zap_page(struct kvm_vcpu *vcpu,
...@@ -546,6 +542,10 @@ static void kvm_mmu_zap_page(struct kvm_vcpu *vcpu, ...@@ -546,6 +542,10 @@ static void kvm_mmu_zap_page(struct kvm_vcpu *vcpu,
kvm_mmu_put_page(vcpu, page, parent_pte); kvm_mmu_put_page(vcpu, page, parent_pte);
*parent_pte = 0; *parent_pte = 0;
} }
kvm_mmu_page_unlink_children(vcpu, page);
hlist_del(&page->hash_link);
list_del(&page->link);
list_add(&page->link, &vcpu->free_pages);
} }
static int kvm_mmu_unprotect_page(struct kvm_vcpu *vcpu, gfn_t gfn) static int kvm_mmu_unprotect_page(struct kvm_vcpu *vcpu, gfn_t gfn)
......
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