Commit 64dcf2f0 authored by Jingwen Chen's avatar Jingwen Chen Committed by Alex Deucher
Browse files

drm/amd/amdgpu: add error handling to amdgpu_virt_read_pf2vf_data 



[Why]
when vram lost happened in guest, try to write vram can lead to
kernel stuck.

[How]
When the readback data is invalid, don't do write work, directly
reschedule a new work.

Signed-off-by: default avatarJingwen Chen <Jingwen.Chen2@amd.com>
Reviewed-by: default avatarMonk <Liu&lt;monk.liu@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 9024fb08

drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c

+5 −1
Original line number Diff line number Diff line
@@ -560,10 +560,14 @@ static int amdgpu_virt_write_vf2pf_data(struct amdgpu_device *adev) 
static void amdgpu_virt_update_vf2pf_work_item(struct work_struct *work)

{

	struct amdgpu_device *adev = container_of(work, struct amdgpu_device, virt.vf2pf_work.work);

	int ret;



	amdgpu_virt_read_pf2vf_data(adev);

	ret = amdgpu_virt_read_pf2vf_data(adev);

	if (ret)

		goto out;

	amdgpu_virt_write_vf2pf_data(adev);



out:

	schedule_delayed_work(&(adev->virt.vf2pf_work), adev->virt.vf2pf_update_interval_ms);

}