From 390785899f26909973e0dcd443fa239c6c1f1583 Mon Sep 17 00:00:00 2001
From: Jack Zhang <Jack.Zhang1@amd.com>
Date: Thu, 7 Jan 2021 18:38:29 +0800
Subject: [PATCH] drm/amdgpu/sriov Stop data exchange for wholegpu reset
[Why]
When host trigger a whole gpu reset, guest will keep
waiting till host finish reset. But there's a work
queue in guest exchanging data between vf&pf which need
to access frame buffer. During whole gpu reset, frame
buffer is not accessable, and this causes the call trace.
[How]
After vf get reset notification from pf, stop data exchange.
Signed-off-by: Jingwen Chen <Jingwen.Chen2@amd.com>
Signed-off-by: Jack Zhang <Jack.Zhang1@amd.com>
Reviewed-by: Monk Liu <monk.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 1 +
drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 1 +
drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c | 1 +
3 files changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 2d51b7694d1fd..e223fca3ed00c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -573,6 +573,7 @@ void amdgpu_virt_fini_data_exchange(struct amdgpu_device *adev)
DRM_INFO("clean up the vf2pf work item\n");
flush_delayed_work(&adev->virt.vf2pf_work);
cancel_delayed_work_sync(&adev->virt.vf2pf_work);
+ adev->virt.vf2pf_update_interval_ms = 0;
}
}
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
index 7767ccca526bb..3ee481557fc97 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c
@@ -255,6 +255,7 @@ static void xgpu_ai_mailbox_flr_work(struct work_struct *work)
if (!down_read_trylock(&adev->reset_sem))
return;
+ amdgpu_virt_fini_data_exchange(adev);
atomic_set(&adev->in_gpu_reset, 1);
do {
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
index dd5c1e6ce0098..48e588d3c4098 100644
--- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
+++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c
@@ -276,6 +276,7 @@ static void xgpu_nv_mailbox_flr_work(struct work_struct *work)
if (!down_read_trylock(&adev->reset_sem))
return;
+ amdgpu_virt_fini_data_exchange(adev);
atomic_set(&adev->in_gpu_reset, 1);
do {
--
2.39.5