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authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>2010-05-13 10:07:00 +0800
committerAvi Kivity <avi@redhat.com>2010-08-01 10:35:46 +0300
commit6d74229f013ed8e4a00d74cfa7a3fa6a2315c467 (patch)
tree416b2a3f261a90b6bc0d3f19c10b31b5f14963c8
parente8ad9a707496c163312bcdd6aa3b90603d45dc9b (diff)
KVM: MMU: remove rmap before clear spte
Remove rmap before clear spte otherwise it will trigger BUG_ON() in some functions such as rmap_write_protect(). Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
-rw-r--r--arch/x86/kvm/mmu.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index bb48b0ca5f8c..5c9d6df0113e 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1813,6 +1813,7 @@ static int set_spte(struct kvm_vcpu *vcpu, u64 *sptep,
if (level > PT_PAGE_TABLE_LEVEL &&
has_wrprotected_page(vcpu->kvm, gfn, level)) {
ret = 1;
+ rmap_remove(vcpu->kvm, sptep);
spte = shadow_trap_nonpresent_pte;
goto set_pte;
}

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