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2fdac348fd
qemu/hw/virtio
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Eugenio Pérez 2fdac348fd vhost: Get vring base from vq, not svq 
The SVQ vring used idx usually match with the guest visible one, as long
as all the guest buffers (GPA) maps to exactly one buffer within qemu's
VA. However, as we can see in virtqueue_map_desc, a single guest buffer
could map to many buffers in SVQ vring.

Also, its also a mistake to rewind them at the source of migration.
Since VirtQueue is able to migrate the inflight descriptors, its
responsability of the destination to perform the rewind just in case it
cannot report the inflight descriptors to the device.

This makes easier to migrate between backends or to recover them in
vhost devices that support set in flight descriptors.

Fixes: 6d0b222666 ("vdpa: Adapt vhost_vdpa_get_vring_base to SVQ")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2022-07-26 16:23:54 +08:00
..
Kconfig meson: use have_vhost_* variables to pick sources 2022-05-07 07:46:58 +02:00
meson.build meson: use have_vhost_* variables to pick sources 2022-05-07 07:46:58 +02:00
trace-events virtio-iommu: Add bypass mode support to assigned device 2022-06-16 12:54:58 -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: add method vhost_set_vring_err 2022-06-27 18:53:18 -04:00
vhost-iova-tree.c Replace qemu_real_host_page variables with inlined functions 2022-04-06 10:50:38 +02:00
vhost-iova-tree.h vhost: Add VhostIOVATree 2022-03-15 13:57:44 +08:00
vhost-scsi-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
vhost-shadow-virtqueue.c vhost: Add svq avail_handler callback 2022-07-20 16:58:08 +08:00
vhost-shadow-virtqueue.h vhost: Add svq avail_handler callback 2022-07-20 16:58:08 +08:00
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 hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
vhost-user-fs-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
vhost-user-fs.c virtio: add vhost support for virtio devices 2022-05-16 04:38:40 -04:00
vhost-user-i2c-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
vhost-user-i2c.c virtio: drop name parameter for virtio_init() 2022-05-16 04:38:40 -04:00
vhost-user-input-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
vhost-user-rng-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
vhost-user-rng.c virtio: add vhost support for virtio devices 2022-05-16 04:38:40 -04:00
vhost-user-scsi-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
vhost-user-vsock-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
vhost-user-vsock.c virtio: drop name parameter for virtio_init() 2022-05-16 04:38:40 -04:00
vhost-user.c vhost: add method vhost_set_vring_err 2022-06-27 18:53:18 -04:00
vhost-vdpa.c vhost: Get vring base from vq, not svq 2022-07-26 16:23:54 +08:00
vhost-vsock-common.c virtio: add vhost support for virtio devices 2022-05-16 04:38:40 -04:00
vhost-vsock-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
vhost-vsock.c virtio: drop name parameter for virtio_init() 2022-05-16 04:38:40 -04:00
vhost.c vhost: setup error eventfd and dump errors 2022-06-27 18:53:18 -04:00
virtio-9p-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio-balloon-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio-balloon.c virtio: drop name parameter for virtio_init() 2022-05-16 04:38:40 -04:00
virtio-blk-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio-bus.c virtio: stop ioeventfd on reset 2022-06-14 16:50:30 +02:00
virtio-crypto-pci.c Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-crypto.c crypto: Introduce RSA algorithm 2022-06-16 12:54:58 -04:00
virtio-input-host-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio-input-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio-iommu-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio-iommu.c virtio-iommu: Fix migration regression 2022-06-27 18:53:18 -04:00
virtio-mem-pci.c qapi: Include qom-path in MEMORY_DEVICE_SIZE_CHANGE qapi events 2021-10-02 08:43:21 +02:00
virtio-mem-pci.h Use DECLARE_*CHECKER* macros 2020-09-09 09:27:09 -04:00
virtio-mem.c virtio: drop name parameter for virtio_init() 2022-05-16 04:38:40 -04:00
virtio-mmio.c virtio-mmio: cleanup reset 2022-06-14 16:50:30 +02:00
virtio-net-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio-pci.c virtio: stop ioeventfd on reset 2022-06-14 16:50:30 +02:00
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 virtio: drop name parameter for virtio_init() 2022-05-16 04:38:40 -04:00
virtio-rng-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio-rng.c virtio: drop name parameter for virtio_init() 2022-05-16 04:38:40 -04:00
virtio-scsi-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio-serial-pci.c hw/virtio: move virtio-pci.h into shared include space 2022-05-16 04:38:40 -04:00
virtio.c virtio: add vhost support for virtio devices 2022-05-16 04:38:40 -04:00