This is a note to let you know that I've just added the patch titled
drm/amdkfd: Reset GPU on queue preemption failure
to the 6.8-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdkfd-reset-gpu-on-queue-preemption-failure.patch
and it can be found in the queue-6.8 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 8bdfb4ea95ca738d33ef71376c21eba20130f2eb Mon Sep 17 00:00:00 2001
From: Harish Kasiviswanathan <Harish.Kasiviswanathan@xxxxxxx>
Date: Tue, 26 Mar 2024 15:32:46 -0400
Subject: drm/amdkfd: Reset GPU on queue preemption failure
From: Harish Kasiviswanathan <Harish.Kasiviswanathan@xxxxxxx>
commit 8bdfb4ea95ca738d33ef71376c21eba20130f2eb upstream.
Currently, with F32 HWS GPU reset is only when unmap queue fails.
However, if compute queue doesn't repond to preemption request in time
unmap will return without any error. In this case, only preemption error
is logged and Reset is not triggered. Call GPU reset in this case also.
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@xxxxxxx>
Reviewed-by: Mukul Joshi <mukul.joshi@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_device_queue_manager.c
@@ -1997,6 +1997,7 @@ static int unmap_queues_cpsch(struct dev
dev_err(dev, "HIQ MQD's queue_doorbell_id0 is not 0, Queue preemption time out\n");
while (halt_if_hws_hang)
schedule();
+ kfd_hws_hang(dqm);
return -ETIME;
}
Patches currently in stable-queue which might be from Harish.Kasiviswanathan@xxxxxxx are
queue-6.8/drm-amdkfd-reset-gpu-on-queue-preemption-failure.patch
