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| author | Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> | 2010-11-12 14:49:11 +0800 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2011-01-12 11:29:13 +0200 |
| commit | 060c2abe6c5e0f90418baf0a43b48d8d9a5521fb (patch) | |
| tree | 5e7ac2a9f7d41c2eda10dc2180d8e2bb79aa98cf /arch/x86 | |
| parent | e5f3f027960128035a5fa176877b5e9160b35397 (diff) | |
| download | op-kernel-dev-060c2abe6c5e0f90418baf0a43b48d8d9a5521fb.zip op-kernel-dev-060c2abe6c5e0f90418baf0a43b48d8d9a5521fb.tar.gz | |
KVM: MMU: support apf for nonpaing guest
Let's support apf for nonpaing guest
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kvm/mmu.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index df465f6..db0fd55 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -2286,7 +2286,11 @@ static int kvm_handle_bad_page(struct kvm *kvm, gfn_t gfn, pfn_t pfn) return 1; } -static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, int write, gfn_t gfn) +static bool try_async_pf(struct kvm_vcpu *vcpu, bool no_apf, gfn_t gfn, + gva_t gva, pfn_t *pfn, bool write, bool *writable); + +static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, int write, gfn_t gfn, + bool no_apf) { int r; int level; @@ -2307,7 +2311,9 @@ static int nonpaging_map(struct kvm_vcpu *vcpu, gva_t v, int write, gfn_t gfn) mmu_seq = vcpu->kvm->mmu_notifier_seq; smp_rmb(); - pfn = gfn_to_pfn_prot(vcpu->kvm, gfn, write, &map_writable); + + if (try_async_pf(vcpu, no_apf, gfn, v, &pfn, write, &map_writable)) + return 0; /* mmio */ if (is_error_pfn(pfn)) @@ -2595,7 +2601,7 @@ static int nonpaging_page_fault(struct kvm_vcpu *vcpu, gva_t gva, gfn = gva >> PAGE_SHIFT; return nonpaging_map(vcpu, gva & PAGE_MASK, - error_code & PFERR_WRITE_MASK, gfn); + error_code & PFERR_WRITE_MASK, gfn, no_apf); } static int kvm_arch_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn) |
