This is a note to let you know that I've just added the patch titled
drm/amdgpu:fix random missing of FLR NOTIFY
to the 4.14-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git%3Ba=su...
The filename of the patch is: drm-amdgpu-fix-random-missing-of-flr-notify.patch and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let stable@vger.kernel.org know about it.
From foo@baz Fri Mar 16 15:43:17 CET 2018
From: Monk Liu Monk.Liu@amd.com Date: Tue, 24 Oct 2017 15:10:11 +0800 Subject: drm/amdgpu:fix random missing of FLR NOTIFY
From: Monk Liu Monk.Liu@amd.com
[ Upstream commit 34a4d2bf06b3ab92024b8e26d6049411369d1f1a ]
Signed-off-by: Monk Liu Monk.Liu@amd.com Acked-by: Christian König christian.koenig@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-)
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c @@ -276,9 +276,17 @@ static int xgpu_ai_mailbox_rcv_irq(struc /* see what event we get */ r = xgpu_ai_mailbox_rcv_msg(adev, IDH_FLR_NOTIFICATION);
- /* only handle FLR_NOTIFY now */ - if (!r) - schedule_work(&adev->virt.flr_work); + /* sometimes the interrupt is delayed to inject to VM, so under such case + * the IDH_FLR_NOTIFICATION is overwritten by VF FLR from GIM side, thus + * above recieve message could be failed, we should schedule the flr_work + * anyway + */ + if (r) { + DRM_ERROR("FLR_NOTIFICATION is missed\n"); + xgpu_ai_mailbox_send_ack(adev); + } + + schedule_work(&adev->virt.flr_work); }
return 0;
Patches currently in stable-queue which might be from Monk.Liu@amd.com are
queue-4.14/drm-amdgpu-fix-random-missing-of-flr-notify.patch queue-4.14/drm-amdgpu-fix-virtual-dce-bug.patch