Sure, I guess i can drop this patch then.
Andrey
On 2021-12-24 4:57 a.m., JingWen Chen wrote:
I do agree with shaoyun, if the host find the gpu engine hangs first, and do the flr, guest side thread may not know this and still try to access HW(e.g. kfd is using a lot of amdgpu_in_reset and reset_sem to identify the reset status). And this may lead to very bad result.
On 2021/12/24 下午4:58, Deng, Emily wrote:
These patches look good to me. JingWen will pull these patches and do some basic TDR test on sriov environment, and give feedback.
Best wishes Emily Deng
-----Original Message----- From: Liu, Monk Monk.Liu@amd.com Sent: Thursday, December 23, 2021 6:14 PM To: Koenig, Christian Christian.Koenig@amd.com; Grodzovsky, Andrey Andrey.Grodzovsky@amd.com; dri-devel@lists.freedesktop.org; amd- gfx@lists.freedesktop.org; Chen, Horace Horace.Chen@amd.com; Chen, JingWen JingWen.Chen2@amd.com; Deng, Emily Emily.Deng@amd.com Cc: daniel@ffwll.ch Subject: RE: [RFC v2 8/8] drm/amd/virt: Drop concurrent GPU reset protection for SRIOV
[AMD Official Use Only]
@Chen, Horace @Chen, JingWen @Deng, Emily
Please take a review on Andrey's patch
Thanks
Monk Liu | Cloud GPU & Virtualization Solution | AMD
we are hiring software manager for CVS core team
-----Original Message----- From: Koenig, Christian Christian.Koenig@amd.com Sent: Thursday, December 23, 2021 4:42 PM To: Grodzovsky, Andrey Andrey.Grodzovsky@amd.com; dri- devel@lists.freedesktop.org; amd-gfx@lists.freedesktop.org Cc: daniel@ffwll.ch; Liu, Monk Monk.Liu@amd.com; Chen, Horace Horace.Chen@amd.com Subject: Re: [RFC v2 8/8] drm/amd/virt: Drop concurrent GPU reset protection for SRIOV
Am 22.12.21 um 23:14 schrieb Andrey Grodzovsky:
Since now flr work is serialized against GPU resets there is no need for this.
Signed-off-by: Andrey Grodzovsky andrey.grodzovsky@amd.com
Acked-by: Christian König christian.koenig@amd.com
drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c | 11 ----------- drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c | 11 ----------- 2 files changed, 22 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c index 487cd654b69e..7d59a66e3988 100644 --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_ai.c @@ -248,15 +248,7 @@ static void xgpu_ai_mailbox_flr_work(struct
work_struct *work)
struct amdgpu_device *adev = container_of(virt, structamdgpu_device, virt);
int timeout = AI_MAILBOX_POLL_FLR_TIMEDOUT;
/* block amdgpu_gpu_recover till msg FLR COMPLETE received,
* otherwise the mailbox msg will be ruined/reseted by* the VF FLR.*/if (!down_write_trylock(&adev->reset_sem))
return;amdgpu_virt_fini_data_exchange(adev);
atomic_set(&adev->in_gpu_reset, 1);
xgpu_ai_mailbox_trans_msg(adev, IDH_READY_TO_RESET, 0, 0, 0);
@@ -269,9 +261,6 @@ static void xgpu_ai_mailbox_flr_work(struct
work_struct *work)
} while (timeout > 1);flr_done:
- atomic_set(&adev->in_gpu_reset, 0);
- up_write(&adev->reset_sem);
- /* Trigger recovery for world switch failure if no TDR */ if (amdgpu_device_should_recover_gpu(adev) && (!amdgpu_device_has_job_running(adev) || diff --git
a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c index e3869067a31d..f82c066c8e8d 100644 --- a/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c +++ b/drivers/gpu/drm/amd/amdgpu/mxgpu_nv.c @@ -277,15 +277,7 @@ static void xgpu_nv_mailbox_flr_work(struct
work_struct *work)
struct amdgpu_device *adev = container_of(virt, structamdgpu_device, virt);
int timeout = NV_MAILBOX_POLL_FLR_TIMEDOUT;
/* block amdgpu_gpu_recover till msg FLR COMPLETE received,
* otherwise the mailbox msg will be ruined/reseted by* the VF FLR.*/if (!down_write_trylock(&adev->reset_sem))
return;amdgpu_virt_fini_data_exchange(adev);
atomic_set(&adev->in_gpu_reset, 1);
xgpu_nv_mailbox_trans_msg(adev, IDH_READY_TO_RESET, 0, 0, 0);
@@ -298,9 +290,6 @@ static void xgpu_nv_mailbox_flr_work(struct
work_struct *work)
} while (timeout > 1);flr_done:
- atomic_set(&adev->in_gpu_reset, 0);
- up_write(&adev->reset_sem);
- /* Trigger recovery for world switch failure if no TDR */ if (amdgpu_device_should_recover_gpu(adev) && (!amdgpu_device_has_job_running(adev) ||