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From: Xiao Guangrong on 12 May 2010 22:20
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(a)cn.fujitsu.com>
---
arch/x86/kvm/mmu.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 67da751..a474d93 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1812,6 +1812,7 @@ 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;
}
--
1.6.1.2


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