[PATCH v2 5/10] KVM MMU: split kvm_sync_page() function
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From: Xiao Guangrong on 25 Apr 2010 03:10 Split kvm_sync_page() into kvm_sync_page() and kvm_sync_page_transient() to clarify the code address Avi's suggestion kvm_sync_page_transient() function only update shadow page but not mark it sync and not write protect sp->gfn. it will be used by later patch Signed-off-by: Xiao Guangrong <xiaoguangrong(a)cn.fujitsu.com> --- arch/x86/kvm/mmu.c | 17 +++++++++++++++++ 1 files changed, 17 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index abf8bd4..60a91c6 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -1196,6 +1196,23 @@ static void kvm_unlink_unsync_page(struct kvm *kvm, struct kvm_mmu_page *sp) static int kvm_mmu_zap_page(struct kvm *kvm, struct kvm_mmu_page *sp); +static int kvm_sync_page_transient(struct kvm_vcpu *vcpu, + struct kvm_mmu_page *sp) +{ + if (sp->role.cr4_pae != !!is_pae(vcpu)) { + kvm_mmu_zap_page(vcpu->kvm, sp); + return 1; + } + + if (vcpu->arch.mmu.sync_page(vcpu, sp)) { + kvm_mmu_zap_page(vcpu->kvm, sp); + return 1; + } + + kvm_mmu_flush_tlb(vcpu); + return 0; +} + static int kvm_sync_page(struct kvm_vcpu *vcpu, struct kvm_mmu_page *sp) { if (sp->role.cr4_pae != !!is_pae(vcpu)) { -- 1.6.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |