From 3b4dc3a031110753b9ba36432dbd21f989fcee56 Mon Sep 17 00:00:00 2001 From: Marcelo Tosatti Date: Tue, 28 Aug 2012 17:43:26 -0300 Subject: [PATCH] KVM: move postcommit flush to x86, as mmio sptes are x86 specific Other arches do not need this. Signed-off-by: Marcelo Tosatti v2: fix incorrect deletion of mmio sptes on gpa move (noticed by Takuya) Signed-off-by: Avi Kivity --- arch/x86/kvm/x86.c | 8 ++++++++ virt/kvm/kvm_main.c | 7 ------- 2 files changed, 8 insertions(+), 7 deletions(-) diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 37797a0..6f6812e 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -6445,6 +6445,14 @@ void kvm_arch_commit_memory_region(struct kvm *kvm, kvm_mmu_change_mmu_pages(kvm, nr_mmu_pages); kvm_mmu_slot_remove_write_access(kvm, mem->slot); spin_unlock(&kvm->mmu_lock); + /* + * If memory slot is created, or moved, we need to clear all + * mmio sptes. + */ + if (npages && old.base_gfn != mem->guest_phys_addr >> PAGE_SHIFT) { + kvm_mmu_zap_all(kvm); + kvm_reload_remote_mmus(kvm); + } } void kvm_arch_flush_shadow_all(struct kvm *kvm) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index f41ea12..4fe02d90 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -849,13 +849,6 @@ int __kvm_set_memory_region(struct kvm *kvm, kvm_arch_commit_memory_region(kvm, mem, old, user_alloc); - /* - * If the new memory slot is created, we need to clear all - * mmio sptes. - */ - if (npages && old.base_gfn != mem->guest_phys_addr >> PAGE_SHIFT) - kvm_arch_flush_shadow_all(kvm); - kvm_free_physmem_slot(&old, &new); kfree(old_memslots); -- 2.7.4