KVM: Clear async page fault hash after switching to real mode

The hash array of async gfns may still contain some left gfns after
kvm_clear_async_pf_completion_queue() called, need to clear them.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Acked-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 17af71da63ad..dae2d15c49eb 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -525,8 +525,10 @@ int kvm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0)
 
         kvm_x86_ops->set_cr0(vcpu, cr0);
 
-        if ((cr0 ^ old_cr0) & X86_CR0_PG)
+        if ((cr0 ^ old_cr0) & X86_CR0_PG) {
                 kvm_clear_async_pf_completion_queue(vcpu);
+                kvm_async_pf_hash_reset(vcpu);
+        }
 
         if ((cr0 ^ old_cr0) & update_bits)
                 kvm_mmu_reset_context(vcpu);