Eugenio Pérez b4cca6d48e vdpa_sim: set last_used_idx as last_avail_idx in vdpasim_queue_ready ... Starting from an used_idx different than 0 is needed in use cases like virtual machine migration. Not doing so and letting the caller set an avail idx different than 0 causes destination device to try to use old buffers that source driver already recover and are not available anymore. Since vdpa_sim does not support receive inflight descriptors as a destination of a migration, let's set both avail_idx and used_idx the same at vq start. This is how vhost-user works in a VHOST_SET_VRING_BASE call. Although the simple fix is to set last_used_idx at vdpasim_set_vq_state, it would be reset at vdpasim_queue_ready. The last_avail_idx case is fixed with commit 0e84f918fa ("vdpa_sim: not reset state in vdpasim_queue_ready"). Since the only option is to make it equal to last_avail_idx, adding the only change needed here. This was discovered and tested live migrating the vdpa_sim_net device. Fixes: 2c53d0f64c ("vdpasim: vDPA device simulator") Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Eugenio Pérez <eperezma@redhat.com> Message-Id: <20230302181857.925374-1-eperezma@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>		2023-03-13 02:29:12 -04:00
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alibaba	vdpa: multiple address spaces support	2022-05-31 12:44:27 -04:00
ifcvf	vDPA/ifcvf: implement features provisioning	2023-02-20 19:26:55 -05:00
mlx5	vdpa/mlx5: should not activate virtq object when suspended	2023-03-10 04:02:31 -05:00
solidrun	virtio: vdpa: new SolidNET DPU driver.	2023-02-20 19:26:56 -05:00
vdpa_sim	vdpa_sim: set last_used_idx as last_avail_idx in vdpasim_queue_ready	2023-03-13 02:29:12 -04:00
vdpa_user	- Daniel Verkamp has contributed a memfd series ("mm/memfd: add	2023-02-23 17:09:35 -08:00
virtio_pci	vp_vdpa: fix the crash in hot unplug with vp_vdpa	2023-03-10 03:48:27 -05:00
Kconfig	virtio: vdpa: new SolidNET DPU driver.	2023-02-20 19:26:56 -05:00
Makefile	virtio: vdpa: new SolidNET DPU driver.	2023-02-20 19:26:56 -05:00
vdpa.c	vdpa: validate device feature provisioning against supported class	2023-02-20 19:27:00 -05:00