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KVM: fix searching async gfn in kvm_async_pf_gfn_slot

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Don't search later slots if the slot is empty

Acked-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
This commit is contained in:
Xiao Guangrong
2010-11-01 17:00:30 +08:00
committed by Avi Kivity
parent 0730388b97
commit c7d28c2404
1 changed files with 2 additions and 2 deletions
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4
arch/x86/kvm/x86.c
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@@ -6209,8 +6209,8 @@ static u32 kvm_async_pf_gfn_slot(struct kvm_vcpu *vcpu, gfn_t gfn)
u32 key = kvm_async_pf_hash_fn(gfn); u32 key = kvm_async_pf_hash_fn(gfn);
for (i = 0; i < roundup_pow_of_two(ASYNC_PF_PER_VCPU) && for (i = 0; i < roundup_pow_of_two(ASYNC_PF_PER_VCPU) &&
(vcpu->arch.apf.gfns[key] != gfn || (vcpu->arch.apf.gfns[key] != gfn &&
vcpu->arch.apf.gfns[key] == ~0); i++) vcpu->arch.apf.gfns[key] != ~0); i++)
key = kvm_async_pf_next_probe(key); key = kvm_async_pf_next_probe(key);
return key; return key;