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qemu-patch-raspberry4/hw/virtio
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Stefano Garzarella d55f518248 virtio: skip legacy support check on machine types less than 5.1 
Commit 9b3a35ec82 ("virtio: verify that legacy support is not accidentally
on") added a check that returns an error if legacy support is on, but the
device does not support legacy.

Unfortunately some devices were wrongly declared legacy capable even if
they were not (e.g vhost-vsock).

To avoid migration issues, we add a virtio-device property
(x-disable-legacy-check) to skip the legacy error, printing a warning
instead, for machine types < 5.1.

Cc: qemu-stable@nongnu.org
Fixes: 9b3a35ec82 ("virtio: verify that legacy support is not accidentally on")
Suggested-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Suggested-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20200921122506.82515-2-sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-09-29 02:15:24 -04:00
..
Kconfig virtio-mem: Paravirtualized memory hot(un)plug 2020-07-03 07:57:04 -04:00
meson.build meson: convert hw/virtio 2020-08-21 06:30:26 -04:00
trace-events vhost-vdpa: add trace-events 2020-09-29 02:15:20 -04:00
trace.h trace: switch position of headers to what Meson requires 2020-08-21 06:18:24 -04:00
vhost-backend.c vhost: switch to use IOTLB v2 format 2020-09-29 02:14:29 -04:00
vhost-scsi-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
vhost-stub.c vhost-user: simplify vhost_user_init/vhost_user_cleanup 2019-03-12 21:22:31 -04:00
vhost-user-blk-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
vhost-user-fs-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
vhost-user-fs.c qdev: Unrealize must not fail 2020-05-15 07:08:14 +02:00
vhost-user-input-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
vhost-user-scsi-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
vhost-user-vsock-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
vhost-user-vsock.c virtio: add vhost-user-vsock base device 2020-06-12 10:17:06 -04:00
vhost-user.c hw/virtio/vhost-user:Remove dead assignment in scrub_shadow_regions() 2020-09-01 11:58:32 +02:00
vhost-vdpa.c vhost-vdpa: add trace-events 2020-09-29 02:15:20 -04:00
vhost-vsock-common.c vhost-vsock: add vhost-vsock-common abstraction 2020-06-12 10:17:06 -04:00
vhost-vsock-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
vhost-vsock.c vhost-vsock: add vhost-vsock-common abstraction 2020-06-12 10:17:06 -04:00
vhost.c vhost: check queue state in the vhost_dev_set_log routine 2020-09-29 02:14:29 -04:00
virtio-9p-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-balloon-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-balloon.c virtio-balloon: Replace free page hinting references to 'report' with 'hint' 2020-07-22 07:57:07 -04:00
virtio-blk-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-bus.c virtio: notify virtqueue via host notifier when available 2019-11-06 06:35:00 -05:00
virtio-crypto-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-crypto.c virtio-crypto: don't modify elem->in/out_sg 2020-09-23 13:41:58 +01:00
virtio-input-host-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-input-pci.c Use OBJECT_DECLARE_SIMPLE_TYPE when possible 2020-09-18 14:12:32 -04:00
virtio-iommu-pci.c virtio-iommu-pci: force virtio version 1 2020-09-29 02:14:30 -04:00
virtio-iommu.c virtio-iommu: Check gtrees are non null before destroying them 2020-09-29 02:14:30 -04:00
virtio-mem-pci.c virtio-mem-pci: force virtio version 1 2020-07-27 09:38:33 -04:00
virtio-mem-pci.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-mem.c virtio-mem: detach the element from the virtqueue when error occurs 2020-09-29 02:14:29 -04:00
virtio-mmio.c qemu/atomic.h: rename atomic_ to qatomic_ 2020-09-23 16:07:44 +01:00
virtio-net-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-pci.c virtio: skip legacy support check on machine types less than 5.1 2020-09-29 02:15:24 -04:00
virtio-pci.h Use OBJECT_DECLARE_TYPE when possible 2020-09-18 14:12:32 -04:00
virtio-pmem-pci.c virtio-pmem-pci: force virtio version 1 2020-09-29 02:14:30 -04:00
virtio-pmem-pci.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-pmem.c qom: Change object_get_canonical_path_component() not to malloc 2020-07-21 16:23:43 +02:00
virtio-rng-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-rng.c error: Eliminate error_propagate() with Coccinelle, part 1 2020-07-10 15:18:08 +02:00
virtio-scsi-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-serial-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio.c virtio: skip legacy support check on machine types less than 5.1 2020-09-29 02:15:24 -04:00