[PATCH] drm/amdgpu: Temparary disable the sdma use pollmem feature for sriov.

[Christian König]

Am 19.01.2018 um 11:14 schrieb Emily Deng:
> It still has some serious issues(guest driver reload fail, etc),
> when use pollmem feature for sdma3.
>
> Signed-off-by: Emily Deng <Emily.Deng at amd.com>
> ---
>   drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
> index 3e22ae4..0f8f614 100644
> --- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
> @@ -1209,7 +1209,7 @@ static int sdma_v3_0_sw_init(void *handle)
>   	for (i = 0; i < adev->sdma.num_instances; i++) {
>   		ring = &adev->sdma.instance[i].ring;
>   		ring->ring_obj = NULL;
> -		if (!amdgpu_sriov_vf(adev)) {
> +		if (1) {

That needs a comment why we have it and I suggest writing this as:

/* Disabled for now because... */
if (true /* !amdgpu_sriov_vf(adev) */)

Regards,
Christian.

>   			ring->use_doorbell = true;
>   			ring->doorbell_index = (i == 0) ?
>   				AMDGPU_DOORBELL_sDMA_ENGINE0 : AMDGPU_DOORBELL_sDMA_ENGINE1;