diff options
| author | Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com> | 2013-06-07 10:51:24 +0200 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-06-27 13:18:15 +0200 |
| commit | f2fd125d32822ee32779551a70d256a7c27dbe40 (patch) | |
| tree | 76c09c50170f32db0587b3e5883f8e1b1b4f245e /arch/x86/kvm/paging_tmpl.h | |
| parent | KVM: MMU: retain more available bits on mmio spte (diff) | |
| download | linux-f2fd125d32822ee32779551a70d256a7c27dbe40.tar.xz linux-f2fd125d32822ee32779551a70d256a7c27dbe40.zip | |
KVM: MMU: store generation-number into mmio spte
Store the generation-number into bit3 ~ bit11 and bit52 ~ bit61, totally
19 bits can be used, it should be enough for nearly all most common cases
In this patch, the generation-number is always 0, it will be changed in
the later patch
[Gleb: masking generation bits from spte in get_mmio_spte_gfn() and
get_mmio_spte_access()]
Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
Reviewed-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/paging_tmpl.h')
| -rw-r--r-- | arch/x86/kvm/paging_tmpl.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/paging_tmpl.h b/arch/x86/kvm/paging_tmpl.h index da20860b457a..fb50fa64f36c 100644 --- a/arch/x86/kvm/paging_tmpl.h +++ b/arch/x86/kvm/paging_tmpl.h @@ -792,7 +792,8 @@ static int FNAME(sync_page)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp) pte_access &= gpte_access(vcpu, gpte); protect_clean_gpte(&pte_access, gpte); - if (sync_mmio_spte(&sp->spt[i], gfn, pte_access, &nr_present)) + if (sync_mmio_spte(vcpu->kvm, &sp->spt[i], gfn, pte_access, + &nr_present)) continue; if (gfn != sp->gfns[i]) { |