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authorAvi Kivity <avi@qumranet.com>2008-07-11 17:59:46 +0300
committerAvi Kivity <avi@qumranet.com>2008-10-15 10:15:12 +0200
commit31aa2b44afd5e73365221b1de66f6081e4616f33 (patch)
treeadac599942727ac54bb4729dbea7742afbd31a06 /arch/x86/kvm/mmu.c
parent867767a365ee74a3adcfaba27075eefb66b14bfd (diff)
KVM: MMU: Separate the code for unlinking a shadow page from its parents
Place into own function, in preparation for further cleanups. Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'arch/x86/kvm/mmu.c')
-rw-r--r--arch/x86/kvm/mmu.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 3da2508eb22..81016a3a6fd 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -991,11 +991,10 @@ static void kvm_mmu_reset_last_pte_updated(struct kvm *kvm)
kvm->vcpus[i]->arch.last_pte_updated = NULL;
}
-static void kvm_mmu_zap_page(struct kvm *kvm, struct kvm_mmu_page *sp)
+static void kvm_mmu_unlink_parents(struct kvm *kvm, struct kvm_mmu_page *sp)
{
u64 *parent_pte;
- ++kvm->stat.mmu_shadow_zapped;
while (sp->multimapped || sp->parent_pte) {
if (!sp->multimapped)
parent_pte = sp->parent_pte;
@@ -1010,7 +1009,13 @@ static void kvm_mmu_zap_page(struct kvm *kvm, struct kvm_mmu_page *sp)
kvm_mmu_put_page(sp, parent_pte);
set_shadow_pte(parent_pte, shadow_trap_nonpresent_pte);
}
+}
+
+static void kvm_mmu_zap_page(struct kvm *kvm, struct kvm_mmu_page *sp)
+{
+ ++kvm->stat.mmu_shadow_zapped;
kvm_mmu_page_unlink_children(kvm, sp);
+ kvm_mmu_unlink_parents(kvm, sp);
if (!sp->root_count) {
if (!sp->role.metaphysical && !sp->role.invalid)
unaccount_shadowed(kvm, sp->gfn);