diff options
| author | Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> | 2011-12-16 18:18:10 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2012-03-05 14:52:18 +0200 |
| commit | a138fe7535c0ec778465c7b54b1aaaf4cfd885b7 (patch) | |
| tree | 08c8f5bf5edf847d5127a00a6041b0629cc24045 | |
| parent | 6addd1aa2ca28c054820ef2966ad372f118c3f31 (diff) | |
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>
| -rw-r--r-- | arch/x86/kvm/mmu.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 9270e0d93c31..34da43086952 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -3551,7 +3551,7 @@ static u64 mmu_pte_write_fetch_gpte(struct kvm_vcpu *vcpu, gpa_t *gpa, * If we're seeing too many writes to a page, it may no longer be a page table, * or we may be forking, in which case it is better to unmap the page. */ -static bool detect_write_flooding(struct kvm_mmu_page *sp, u64 *spte) +static bool detect_write_flooding(struct kvm_mmu_page *sp) { /* * Skip write-flooding detected for the sp whose level is 1, because @@ -3660,10 +3660,8 @@ void kvm_mmu_pte_write(struct kvm_vcpu *vcpu, gpa_t gpa, mask.cr0_wp = mask.cr4_pae = mask.nxe = 1; for_each_gfn_indirect_valid_sp(vcpu->kvm, sp, gfn, node) { - spte = get_written_sptes(sp, gpa, &npte); - if (detect_write_misaligned(sp, gpa, bytes) || - detect_write_flooding(sp, spte)) { + detect_write_flooding(sp)) { zap_page |= !!kvm_mmu_prepare_zap_page(vcpu->kvm, sp, &invalid_list); ++vcpu->kvm->stat.mmu_flooded; |