Marcelo Tosatti wrote:
The host needs to zap its shadow entries before performing an inflate
operation to avoid the guest from using stale ones.
So add an ioctl to interface with kvm_mmu_zap_all().
Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
Index: kvm.quilt/virt/kvm/kvm_main.c
===================================================================
--- kvm.quilt.orig/virt/kvm/kvm_main.c
+++ kvm.quilt/virt/kvm/kvm_main.c
@@ -971,6 +971,11 @@ static long kvm_vm_ioctl(struct file *fi
goto out;
break;
}
+ case KVM_SYNC_SHADOW_WITH_USER: {
+ r = 0;
+ kvm_mmu_zap_all(kvm);
+ break;
+ }
It should go into the arch ioctl below since the mmu is under x86
default:
r = kvm_arch_vm_ioctl(filp, ioctl, arg);
}
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