[RFC v4 04/11] drm/amd/virt: For SRIOV send GPU reset directly to TDR queue.

Liu, Shaoyun Shaoyun.Liu at amd.com
Wed Feb 9 00:49:42 UTC 2022


[AMD Official Use Only]

This patch is reviewed by  Shaoyun.liu <Shaoyun.liu at amd.com>

Since  other  patches are suggested by  other engineer and they may already od some review on them , so I will leave  them  to continue review  the rest patches.  

Regards
Shaoyun.liu

-----Original Message-----
From: Grodzovsky, Andrey <Andrey.Grodzovsky at amd.com> 
Sent: Tuesday, February 8, 2022 7:23 PM
To: dri-devel at lists.freedesktop.org; amd-gfx at lists.freedesktop.org
Cc: Koenig, Christian <Christian.Koenig at amd.com>; daniel at ffwll.ch; Liu, Monk <Monk.Liu at amd.com>; Chen, Horace <Horace.Chen at amd.com>; Lazar, Lijo <Lijo.Lazar at amd.com>; Chen, JingWen <JingWen.Chen2 at amd.com>; Grodzovsky, Andrey <Andrey.Grodzovsky at amd.com>; Liu, Shaoyun <Shaoyun.Liu at amd.com>
Subject: [RFC v4 04/11] drm/amd/virt: For SRIOV send GPU reset directly to TDR queue.

No need to to trigger another work queue inside the work queue.

v3:

Problem:
Extra reset caused by host side FLR notification following guest side triggered reset.
Fix: Preven qeuing flr_work from mailbox irq if guest already executing a reset.

Suggested-by: Liu Shaoyun <Shaoyun.Liu at amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 9 ++++++---  drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c | 9 ++++++---  drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c | 9 ++++++---
 3 files changed, 18 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
index 56da5ab82987..5869d51d8bee 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
@@ -282,7 +282,7 @@ static void xgpu_ai_mailbox_flr_work(struct work_struct *work)
 	if (amdgpu_device_should_recover_gpu(adev)
 		&& (!amdgpu_device_has_job_running(adev) ||
 		adev->sdma_timeout == MAX_SCHEDULE_TIMEOUT))
-		amdgpu_device_gpu_recover(adev, NULL);
+		amdgpu_device_gpu_recover_imp(adev, NULL);
 }
 
 static int xgpu_ai_set_mailbox_rcv_irq(struct amdgpu_device *adev, @@ -307,8 +307,11 @@ static int xgpu_ai_mailbox_rcv_irq(struct amdgpu_device *adev,
 
 	switch (event) {
 		case IDH_FLR_NOTIFICATION:
-		if (amdgpu_sriov_runtime(adev))
-			schedule_work(&adev->virt.flr_work);
+		if (amdgpu_sriov_runtime(adev) && !amdgpu_in_reset(adev))
+			WARN_ONCE(!queue_work(adev->reset_domain.wq,
+					      &adev->virt.flr_work),
+				  "Failed to queue work! at %s",
+				  __func__);
 		break;
 		case IDH_QUERY_ALIVE:
 			xgpu_ai_mailbox_send_ack(adev);
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
index 477d0dde19c5..5728a6401d73 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
@@ -309,7 +309,7 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
 		adev->gfx_timeout == MAX_SCHEDULE_TIMEOUT ||
 		adev->compute_timeout == MAX_SCHEDULE_TIMEOUT ||
 		adev->video_timeout == MAX_SCHEDULE_TIMEOUT))
-		amdgpu_device_gpu_recover(adev, NULL);
+		amdgpu_device_gpu_recover_imp(adev, NULL);
 }
 
 static int xgpu_nv_set_mailbox_rcv_irq(struct amdgpu_device *adev, @@ -337,8 +337,11 @@ static int xgpu_nv_mailbox_rcv_irq(struct amdgpu_device *adev,
 
 	switch (event) {
 	case IDH_FLR_NOTIFICATION:
-		if (amdgpu_sriov_runtime(adev))
-			schedule_work(&adev->virt.flr_work);
+		if (amdgpu_sriov_runtime(adev) && !amdgpu_in_reset(adev))
+			WARN_ONCE(!queue_work(adev->reset_domain.wq,
+					      &adev->virt.flr_work),
+				  "Failed to queue work! at %s",
+				  __func__);
 		break;
 		/* READY_TO_ACCESS_GPU is fetched by kernel polling, IRQ can ignore
 		 * it byfar since that polling thread will handle it, diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
index aef9d059ae52..02290febfcf4 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_vi.c
@@ -521,7 +521,7 @@ static void xgpu_vi_mailbox_flr_work(struct work_struct *work)
 
 	/* Trigger recovery due to world switch failure */
 	if (amdgpu_device_should_recover_gpu(adev))
-		amdgpu_device_gpu_recover(adev, NULL);
+		amdgpu_device_gpu_recover_imp(adev, NULL);
 }
 
 static int xgpu_vi_set_mailbox_rcv_irq(struct amdgpu_device *adev, @@ -550,8 +550,11 @@ static int xgpu_vi_mailbox_rcv_irq(struct amdgpu_device *adev,
 		r = xgpu_vi_mailbox_rcv_msg(adev, IDH_FLR_NOTIFICATION);
 
 		/* only handle FLR_NOTIFY now */
-		if (!r)
-			schedule_work(&adev->virt.flr_work);
+		if (!r && !amdgpu_in_reset(adev))
+			WARN_ONCE(!queue_work(adev->reset_domain.wq,
+					      &adev->virt.flr_work),
+				  "Failed to queue work! at %s",
+				  __func__);
 	}
 
 	return 0;
--
2.25.1


More information about the amd-gfx mailing list