vdpa_sim: not reset state in vdpasim_queue_ready

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[ Upstream commit 0e84f918fa ]

vdpasim_queue_ready calls vringh_init_iotlb, which resets split indexes.
But it can be called after setting a ring base with
vdpasim_set_vq_state.

Fix it by stashing them. They're still resetted in vdpasim_vq_reset.

This was discovered and tested live migrating the vdpa_sim_net device.

Fixes: 2c53d0f64c ("vdpasim: vDPA device simulator")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230118164359.1523760-2-eperezma@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Stable-dep-of: b4cca6d48e ("vdpa_sim: set last_used_idx as last_avail_idx in vdpasim_queue_ready")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Eugenio Pérez 2023-01-18 17:43:58 +01:00 • committed by Greg Kroah-Hartman

parent 5ad8d44873

commit d5df487c2b

1 changed files with 2 additions and 0 deletions

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drivers/vdpa/vdpa_sim/vdpa_sim.c

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