The function called is either amdgpu_vm_do_set_ptes() or
amdgpu_vm_do_copy_ptes().
But that is actually rather unrelated to the local handling of addr in
the function changed.
The point here is we have handled the address offset by giving it to
amdgpu_vm_map_gart() and so we shouldn't add the address again.
Regards,
Christian.
Am 26.09.2016 um 15:46 schrieb StDenis, Tom:
I'm reading through the amdgpu_vm.c to try and see if the patch is
correct but I'm not that familiar with the VM side of things. It
seems to boil down to calling params->func() with a new dst value of
NULL but that's where I'm stopped at the moment since I don't know
what func() is. Nothing up to that point looks overtly wrong (like
trying to use that address as a source for a read/write).
Tom
------------------------------------------------------------------------
*From:* amd-gfx <[email protected]> on behalf of
Christian König <[email protected]>
*Sent:* Monday, September 26, 2016 09:29
*To:* Cui, Flora
*Cc:* Huang, Ray; [email protected]
*Subject:* Re: [PATCH] drm/amdgpu: fix addr handling in
amdgpu_vm_bo_update_mapping
Yeah, that wouldn't really help but just make the problem more unlikely
to happen once more.
Anyway Tom St confirmed that the patch seems to work for the open stack.
Anybody brave enough to throw an rb on this so that I can commit it?
Thanks,
Christian.
Am 26.09.2016 um 11:16 schrieb Flora Cui:
> please ignore this patch. it actually revert the gtt mgr changes.
>
> On Mon, Sep 26, 2016 at 03:19:01PM +0800, Flora Cui wrote:
>> On Sun, Sep 25, 2016 at 11:55:13AM +0200, Christian König wrote:
>>> From: Christian König <[email protected]>
>>>
>>> Otherwise we will look at the wrong place in the IB when GART
>>> mappings are split into smaller updates.
>>>
>>> Signed-off-by: Christian König <[email protected]>
>>> ---
>>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 1 +
>>> 1 file changed, 1 insertion(+)
>>>
>>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>>> index 2bb78dc..da31189 100644
>>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>>> @@ -1017,6 +1017,7 @@ static int
amdgpu_vm_bo_update_mapping(struct amdgpu_device *adev,
>>>AMDGPU_GPU_PAGE_SIZE);
>>> pte[i] |= flags;
>>> }
>>> + addr = 0;
>>> }
>>>
>>> r = amdgpu_sync_fence(adev, &job->sync, exclusive);
>>> --
>>> 2.5.0
>>>
>>>
>> IMHO this could fix the vmfault issue.
>>
>> 8<---
>> From cc7b5618665defd88e2adcd6f735562ecd784298 Mon Sep 17 00:00:00 2001
>> From: Flora Cui <[email protected]>
>> Date: Mon, 26 Sep 2016 15:14:02 +0800
>> Subject: [PATCH] drm/amdgpu: add ttm_bind in amdgpu_vm_bo_update()
>>
>> Change-Id: If73d5b06e9188e40250ccdfd1a2a659ed1ef52a6
>> Signed-off-by: Flora Cui <[email protected]>
>> ---
>> drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | 2 ++
>> 1 file changed, 2 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>> index 2bb78dc..7f17127 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c
>> @@ -1166,6 +1166,8 @@ int amdgpu_vm_bo_update(struct amdgpu_device
*adev,
>> ttm = container_of(bo_va->bo->tbo.ttm, struct
>> ttm_dma_tt, ttm);
>> pages_addr = ttm->dma_address;
>> + amdgpu_ttm_bind(&bo_va->bo->tbo, mem);
>> + addr = (u64)mem->start << PAGE_SHIFT;
>> break;
>>
>> case TTM_PL_VRAM:
>> --
>> 2.7.4
>>
>>
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