forked from Minki/linux
KVM: MMU: remove the redundant get_written_sptes
get_written_sptes is called twice in kvm_mmu_pte_write, one of them can be removed Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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@ -3551,7 +3551,7 @@ static u64 mmu_pte_write_fetch_gpte(struct kvm_vcpu *vcpu, gpa_t *gpa,
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* If we're seeing too many writes to a page, it may no longer be a page table,
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* or we may be forking, in which case it is better to unmap the page.
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*/
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static bool detect_write_flooding(struct kvm_mmu_page *sp, u64 *spte)
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static bool detect_write_flooding(struct kvm_mmu_page *sp)
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{
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/*
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* Skip write-flooding detected for the sp whose level is 1, because
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@ -3660,10 +3660,8 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa,
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mask.cr0_wp = mask.cr4_pae = mask.nxe = 1;
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for_each_gfn_indirect_valid_sp(vcpu->kvm, sp, gfn, node) {
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spte = get_written_sptes(sp, gpa, &npte);
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if (detect_write_misaligned(sp, gpa, bytes) ||
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detect_write_flooding(sp, spte)) {
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detect_write_flooding(sp)) {
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zap_page |= !!kvm_mmu_prepare_zap_page(vcpu->kvm, sp,
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&invalid_list);
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++vcpu->kvm->stat.mmu_flooded;
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