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Draft: RDMA/efa: Add shutdown notifier

Tao Liu requested to merge liutgnu/centos-stream-9:efa into main

RDMA/efa: Add shutdown notifier

JIRA: https://issues.redhat.com/browse/RHEL-15968

commit f847e840157b91a490a13df78c4a6d4e5700ba0a Author: Michael Margolin mrgolin@amazon.com Date: Thu, 25 Apr 2024 17:18:14 +0000

RDMA/efa: Add shutdown notifier

Add driver function to stop the device and release any active IRQs as
preparation for shutdown. This should fix issues caused by unexpected AQ
interrupts when booting kernel using kexec and possible data integrity
issues when the system is being shutdown during traffic.

Link: https://lore.kernel.org/r/20240425171814.25216-1-mrgolin@amazon.com
Reviewed-by: Firas Jahjah <firasj@amazon.com>
Reviewed-by: Yonatan Nachum <ynachum@amazon.com>
Signed-off-by: Michael Margolin <mrgolin@amazon.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

Signed-off-by: Tao Liu ltao@redhat.com

Edited by Tao Liu

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