[PATCH] drm/amdgpu/virt: skip VM fault handler for VF (v2)

[Christian König]

Yeah, the src_data is unfortunately not completed (you simply can't have 
all the bits of a 40bit address+flags in a 32bit dw).

But it's the best we can do, so the patch is Reviewed-by: Christian 
König <christian.koenig at amd.com> as well.

Regards,
Christian.

Am 07.02.2017 um 08:03 schrieb Zhang, Jerry:
> If that info is enough for vf.
> Reviewed-by: Junwei Zhang <Jerry.Zhang at amd.com>
>
> Regards,
> Jerry (Junwei Zhang)
>
> Linux Base Graphics
> SRDC Software Development
> _____________________________________
>
>
>> -----Original Message-----
>> From: Pixel Ding [mailto:Pixel.Ding at amd.com]
>> Sent: Tuesday, February 07, 2017 14:07
>> To: Zhou, David(ChunMing); Koenig, Christian; Zhang, Jerry
>> Cc: amd-gfx at lists.freedesktop.org; Ding, Pixel
>> Subject: [PATCH] drm/amdgpu/virt: skip VM fault handler for VF (v2)
>>
>> VF uses KIQ to access registers. When VM fault occurs, the driver can't get back
>> the fence of KIQ submission and runs into CPU soft lockup.
>>
>> v2: print IV entry info
>>
>> Signed-off-by: Pixel Ding <Pixel.Ding at amd.com>
>> ---
>>   drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c | 7 +++++++
>>   1 file changed, 7 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
>> b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
>> index 7669b32..6502508 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
>> @@ -1237,6 +1237,13 @@ static int gmc_v8_0_process_interrupt(struct
>> amdgpu_device *adev,  {
>>   	u32 addr, status, mc_client;
>>
>> +	if (amdgpu_sriov_vf(adev)) {
>> +		dev_err(adev->dev, "GPU fault detected: %d 0x%08x\n",
>> +			entry->src_id, entry->src_data);
>> +		dev_err(adev->dev, " Can't decode VM fault info here on SRIOV
>> VF\n");
>> +		return 0;
>> +	}
>> +
>>   	addr = RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_ADDR);
>>   	status = RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_STATUS);
>>   	mc_client =
>> RREG32(mmVM_CONTEXT1_PROTECTION_FAULT_MCCLIENT);
>> --
>> 2.7.4
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