Re: [PATCH] drm/amdgpu: remove duplicated kfd_resume_iommu

[Alex Deucher <alexdeucher@xxxxxxxxx>]

On Wed, Nov 3, 2021 at 10:34 AM Zhu, James <James.Zhu@xxxxxxx> wrote:

[AMD Official Use Only]

Hi Alex,

Finally figured out the root cause for this broken,

Linux 5.14.15  + afd1818 can fix the issue.

I'll do that for stable.

 

Linux 5.15rc7 re-apply "init iommu after amdkfd device init" and "move iommu_resume before ip init/resume" which overwrote afd1818 caused the issue again.

714d9e4 drm/amdgpu: init iommu after amdkfd device init

f02abeb drm/amdgpu: move iommu_resume before ip init/resume

afd1818 drm/amdkfd: fix boot failure when iommu is disabled in Picasso.

286826d drm/amdgpu: init iommu after amdkfd device init

9cec53c drm/amdgpu: move iommu_resume before ip init/resume

So, do we just discard this patch, and revert 714d9e4 and  f02abeb?

I'll do that for 5.15+

Thanks for sorting this out.

Alex

 

Thanks & Best Regards!

James Zhu

---

From: Alex Deucher <alexdeucher@xxxxxxxxx>
Sent: Tuesday, November 2, 2021 10:01 PM
To: Zhu, James <James.Zhu@xxxxxxx>
Cc: amd-gfx list <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>; Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Zhang, Yifan <Yifan1.Zhang@xxxxxxx>; James Zhu <jzhums@xxxxxxxxx>; Ken Moffat <zarniwhoop@xxxxxxxxxxxx>
Subject: Re: [PATCH] drm/amdgpu: remove duplicated kfd_resume_iommu

 

On Tue, Nov 2, 2021 at 9:34 PM James Zhu <James.Zhu@xxxxxxx> wrote:
>
> Remove duplicated kfd_resume_iommu which already runs
> in mdgpu_amdkfd_device_init.
>
> Signed-off-by: James Zhu <James.Zhu@xxxxxxx>

Once you get confirmation, please add:
Bug: https://nam11.safelinks.protection.outlook.com/?url="">
Bug: https://nam11.safelinks.protection.outlook.com/?url="">

Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>


> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 ----
>  1 file changed, 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index e56bc925afcf..f77823ce7ae8 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -2398,10 +2398,6 @@ static int amdgpu_device_ip_init(struct amdgpu_device *adev)
>         if (!adev->gmc.xgmi.pending_reset)
>                 amdgpu_amdkfd_device_init(adev);
>
> -       r = amdgpu_amdkfd_resume_iommu(adev);
> -       if (r)
> -               goto init_failed;
> -
>         amdgpu_fru_get_product_info(adev);
>
>  init_failed:
> --
> 2.25.1
>