KVM: move postcommit flush to x86, as mmio sptes are x86 specific
Other arches do not need this.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
v2: fix incorrect deletion of mmio sptes on gpa move (noticed by Takuya)
Signed-off-by: Avi Kivity <avi@redhat.com>
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 @@
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)