kata-containers/tools/packaging/qemu/patches/5.1.x/0005-vhost-vsock-ccw-force-virtio-version-1.patch
Peng Tao 154a356ad4 packaging: apply qemu v5.1 stable fixes
Qemu v5.1 was released with an affending commit 9b3a35ec82
(virtio: verify that legacy support is not accidentally on).
As a result, it breaks commandline compatiblilities for old qemu
users. Upstream qemu has fixed it but no release has been put out yet.
Let's apply these fixes by hand for now.

Refs: https://www.mail-archive.com/qemu-devel@nongnu.org/msg729556.html

Depends-on: github.com/kata-containers/tests#2945
Signed-off-by: Peng Tao <bergwolf@hyper.sh>
2020-10-10 18:29:23 +08:00

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1.8 KiB
Diff

From a6704a34cf02add13964149e0de6453ae62bd9db Mon Sep 17 00:00:00 2001
From: Stefano Garzarella <sgarzare@redhat.com>
Date: Mon, 21 Sep 2020 14:25:06 +0200
Subject: [PATCH 4/4] vhost-vsock-ccw: force virtio version 1
virtio-vsock was introduced after the release of VIRTIO 1.0
specifications, so it should be 'modern-only'.
This patch forces virtio version 1 as done for vhost-vsock-pci.
To avoid migration issues, we force virtio version 1 only when
legacy check is enabled in the new machine types (>= 5.1).
Cc: qemu-stable@nongnu.org
Suggested-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20200921122506.82515-5-sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
hw/s390x/vhost-vsock-ccw.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/hw/s390x/vhost-vsock-ccw.c b/hw/s390x/vhost-vsock-ccw.c
index 0822ecc..246416a 100644
--- a/hw/s390x/vhost-vsock-ccw.c
+++ b/hw/s390x/vhost-vsock-ccw.c
@@ -40,9 +40,21 @@ static void vhost_vsock_ccw_class_init(ObjectClass *klass, void *data)
static void vhost_vsock_ccw_instance_init(Object *obj)
{
VHostVSockCCWState *dev = VHOST_VSOCK_CCW(obj);
+ VirtioCcwDevice *ccw_dev = VIRTIO_CCW_DEVICE(obj);
+ VirtIODevice *virtio_dev;
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_VSOCK);
+
+ virtio_dev = VIRTIO_DEVICE(&dev->vdev);
+
+ /*
+ * To avoid migration issues, we force virtio version 1 only when
+ * legacy check is enabled in the new machine types (>= 5.1).
+ */
+ if (!virtio_legacy_check_disabled(virtio_dev)) {
+ ccw_dev->force_revision_1 = true;
+ }
}
static const TypeInfo vhost_vsock_ccw_info = {
--
1.8.3.1