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From: Greg KH on 6 Aug 2010 15:30
2.6.34-stable review patch. If anyone has any objections, please let us know.

------------------

From: Xiao Guangrong <xiaoguangrong(a)cn.fujitsu.com>

(cherry picked from commit 91546356d0e550fa23abf7f4b04a903c2855761f)

After remove a rmap, we should flush all vcpu's tlb

Signed-off-by: Xiao Guangrong <xiaoguangrong(a)cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti(a)redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
arch/x86/kvm/mmu.c | 2 ++
1 file changed, 2 insertions(+)

--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -1901,6 +1901,8 @@ static void mmu_set_spte(struct kvm_vcpu
pgprintk("hfn old %lx new %lx\n",
spte_to_pfn(*sptep), pfn);
rmap_remove(vcpu->kvm, sptep);
+ __set_spte(sptep, shadow_trap_nonpresent_pte);
+ kvm_flush_remote_tlbs(vcpu->kvm);
} else
was_rmapped = 1;
}


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