Bad page translation and silent guest failure ensue if the userspace address is not page-aligned. I hit this problem using large (host) pages with qemu, because qemu currently has a hardcoded 4096-byte alignment for guest memory allocations. Signed-off-by: Hollis Blanchard <hollisb@xxxxxxxxxx> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -714,6 +714,8 @@ int __kvm_set_memory_region(struct kvm * if (mem->memory_size & (PAGE_SIZE - 1)) goto out; if (mem->guest_phys_addr & (PAGE_SIZE - 1)) + goto out; + if (mem->userspace_addr & (PAGE_SIZE - 1)) goto out; if (mem->slot >= KVM_MEMORY_SLOTS + KVM_PRIVATE_MEM_SLOTS) goto out; -- To unsubscribe from this list: send the line "unsubscribe kvm-ppc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
