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vhost-user-fs: add the "bootindex" property 

virtio-fs qualifies as a bootable device minimally under OVMF, but
currently the necessary "bootindex" property is missing. Add the property.

Expose the property only in the PCI device, for now. There is no boot
support for virtiofs on s390x (ccw) for the time being [1] [2], so leave
the CCW device unchanged. Add the property to the base device still,
because adding the alias to the CCW device later will be easier this way
[3].

[1] https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg01745.html
[2] https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg01870.html
[3] https://lists.gnu.org/archive/html/qemu-devel/2021-01/msg01751.html

Example OpenFirmware device path for the "vhost-user-fs-pci" device in the
"bootorder" fw_cfg file:

  /pci@i0cf8/pci-bridge@1,6/pci1af4,105a@0/filesystem@0

Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Ján Tomko <jtomko@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: virtio-fs@redhat.com
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20210112131603.12686-1-lersek@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Laszlo Ersek 2021-01-12 14:16:03 +01:00 committed by Michael S. Tsirkin
parent 5d593bdf10
commit 6da32fe5ef
3 changed files with 13 additions and 0 deletions
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2
hw/virtio/vhost-user-fs-pci.c
View File

@ -68,6 +68,8 @@ static void vhost_user_fs_pci_instance_init(Object *obj)
virtio_instance_init_common(obj, &dev->vdev, sizeof(dev->vdev),
TYPE_VHOST_USER_FS);
object_property_add_alias(obj, "bootindex", OBJECT(&dev->vdev),
"bootindex");
}
static const VirtioPCIDeviceTypeInfo vhost_user_fs_pci_info = {

10
hw/virtio/vhost-user-fs.c
View File

@ -22,6 +22,7 @@
#include "qemu/error-report.h"
#include "hw/virtio/vhost-user-fs.h"
#include "monitor/monitor.h"
#include "sysemu/sysemu.h"
static void vuf_get_config(VirtIODevice *vdev, uint8_t *config)
{
@ -279,6 +280,14 @@ static Property vuf_properties[] = {
DEFINE_PROP_END_OF_LIST(),
};
static void vuf_instance_init(Object *obj)
{
VHostUserFS *fs = VHOST_USER_FS(obj);
device_add_bootindex_property(obj, &fs->bootindex, "bootindex",
"/filesystem@0", DEVICE(obj));
}
static void vuf_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
@ -300,6 +309,7 @@ static const TypeInfo vuf_info = {
.name = TYPE_VHOST_USER_FS,
.parent = TYPE_VIRTIO_DEVICE,
.instance_size = sizeof(VHostUserFS),
.instance_init = vuf_instance_init,
.class_init = vuf_class_init,
};

1
include/hw/virtio/vhost-user-fs.h
View File

@ -39,6 +39,7 @@ struct VHostUserFS {
VhostUserState vhost_user;
VirtQueue **req_vqs;
VirtQueue *hiprio_vq;
int32_t bootindex;
/*< public >*/
};