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Date: Fri, 12 Nov 2010 14:49:11 +0800 From: Xiao Guangrong <xiaoguangrong@...fujitsu.com> To: Avi Kivity <avi@...hat.com> CC: Marcelo Tosatti <mtosatti@...hat.com>, Gleb Natapov <gleb@...hat.com>, LKML <linux-kernel@...r.kernel.org>, KVM <kvm@...r.kernel.org> Subject: [PATCH v2 3/5] KVM: MMU: support apf for nonpaing guest Let's support apf for nonpaing guest Signed-off-by: Xiao Guangrong <xiaoguangrong@...fujitsu.com> --- 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 f3fad4f..5ee5b97 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)) @@ -2594,7 +2600,7 @@ 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) -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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