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| author |   Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-06-11 21:31:38 +0800 |
|---|---|---|
| committer |   Avi Kivity <avi@redhat.com> | 2010-08-01 10:46:42 +0300 |
| commit | be71e061d15c0aad4f8c2606f76c57b8a19792fd (patch) | |
| tree | d103cf12b162d2e4f8855b9bad5f92e640987d76 /arch/x86/kvm/paging_tmpl.h | |
| parent | KVM: MMU: avoid double write protected in sync page path (diff) | |
| download | linux-dev-be71e061d15c0aad4f8c2606f76c57b8a19792fd.tar.xz linux-dev-be71e061d15c0aad4f8c2606f76c57b8a19792fd.zip | |
KVM: MMU: don't mark pte notrap if it's just sync transient
If the sync-sp just sync transient, don't mark its pte notrap
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index efba353369e7..863920f649fb 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -578,7 +578,8 @@ static void FNAME(prefetch_page)(struct kvm_vcpu *vcpu, * can't change unless all sptes pointing to it are nuked first. * - Alias changes zap the entire shadow cache. */ -static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp) +static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp, + bool clear_unsync) { int i, offset, nr_present; bool reset_host_protection; @@ -615,7 +616,7 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp) u64 nonpresent; rmap_remove(vcpu->kvm, &sp->spt[i]); - if (is_present_gpte(gpte)) + if (is_present_gpte(gpte) || !clear_unsync) nonpresent = shadow_trap_nonpresent_pte; else nonpresent = shadow_notrap_nonpresent_pte; |