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KVM: MMU: remove unnecessary kvm_mmu_free_some_pages
author
Xiao Guangrong
<xiaoguangrong@cn.fujitsu.com>
Thu, 22 Sep 2011 08:56:58 +0000
(16:56 +0800)
committer
Avi Kivity
<avi@redhat.com>
Tue, 27 Dec 2011 09:16:58 +0000
(11:16 +0200)
In kvm_mmu_pte_write, we do not need to alloc shadow page, so calling
kvm_mmu_free_some_pages is really unnecessary
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
arch/x86/kvm/mmu.c
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diff --git
a/arch/x86/kvm/mmu.c
b/arch/x86/kvm/mmu.c
index c01137f10c6b5d0f5892b68eb332d0fe9fb9c062..7e57938bb86a3ce150b0665f55df119eb5fdbba2 100644
(file)
--- a/
arch/x86/kvm/mmu.c
+++ b/
arch/x86/kvm/mmu.c
@@
-3590,7
+3590,6
@@
void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
*/
mmu_topup_memory_caches(vcpu);
spin_lock(&vcpu->kvm->mmu_lock);
- kvm_mmu_free_some_pages(vcpu);
++vcpu->kvm->stat.mmu_pte_write;
trace_kvm_mmu_audit(vcpu, AUDIT_PRE_PTE_WRITE);
if (gfn == vcpu->arch.last_pt_write_gfn