linux-stable/drivers/vdpa
Maxime Coquelin a5ae5a81bc vduse: Use proper spinlock for IRQ injection
[ Upstream commit 7ca26efb09 ]

The IRQ injection work used spin_lock_irq() to protect the
scheduling of the softirq, but spin_lock_bh() should be
used.

With spin_lock_irq(), we noticed delay of more than 6
seconds between the time a NAPI polling work is scheduled
and the time it is executed.

Fixes: c8a6153b6c ("vduse: Introduce VDUSE - vDPA Device in Userspace")
Cc: xieyongji@bytedance.com

Suggested-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Message-Id: <20230705114505.63274-1-maxime.coquelin@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Xie Yongji <xieyongji@bytedance.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-08-26 14:23:30 +02:00
..
ifcvf vdpa/ifcvf: fix the calculation of queuepair 2022-10-05 10:39:43 +02:00
mlx5 vdpa/mlx5: Initialize CVQ vringh only once 2022-07-21 21:24:33 +02:00
vdpa_sim vdpa_sim: set last_used_idx as last_avail_idx in vdpasim_queue_ready 2023-03-22 13:31:24 +01:00
vdpa_user vduse: Use proper spinlock for IRQ injection 2023-08-26 14:23:30 +02:00
virtio_pci
Kconfig
Makefile
vdpa.c vdpa: Fix error logic in vdpa_nl_cmd_dev_get_doit 2022-06-14 18:36:12 +02:00