RE: [PATCH 1/2] drm/amdgpu: fix compile error on architecture s390

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[AMD Public Use]

> -----Original Message-----
> From: Das, Nirmoy <Nirmoy.Das@xxxxxxx>
> Sent: Monday, March 15, 2021 3:17 PM
> To: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Das, Nirmoy
> <Nirmoy.Das@xxxxxxx>; Zeng, Oak <Oak.Zeng@xxxxxxx>; amd-
> gfx@xxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [PATCH 1/2] drm/amdgpu: fix compile error on architecture s390
> 
> Hi Alex,
> 
> On 3/15/21 7:46 PM, Deucher, Alexander wrote:
> > [AMD Public Use]
> >
> >> -----Original Message-----
> >> From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of
> >> Nirmoy
> >> Sent: Monday, March 15, 2021 2:43 PM
> >> To: Zeng, Oak <Oak.Zeng@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx
> >> Subject: Re: [PATCH 1/2] drm/amdgpu: fix compile error on
> >> architecture s390
> >>
> >> Wouldn't this restrict amdgpu for only x86 platform?
> > This particular case will only be x86.
> 
> 
> If I understand correctly, we map all the VRAM at startup to avoid
> 
> mapping each BOs. Can't we do that for other Archs ?

You are right.  The else should be CONFIG_64BIT not CONFIG_X86.  @Zeng, Oak can you fix this up?

Alex


> 
> 
> Nirmoy
> 
> 
> >
> > Alex
> >
> >> On 3/11/21 4:29 AM, Oak Zeng wrote:
> >>> ioremap_cache is not supported on some architecture such as s390.
> >>> Put the codes into a #ifdef to fix some compile error reported by
> >>> test robot.
> >>>
> >>> Signed-off-by: Oak Zeng <Oak.Zeng@xxxxxxx>
> >>> Reported-by: Kernel test robot <lkp@xxxxxxxxx>
> >>> ---
> >>>    drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 2 +-
> >>>    1 file changed, 1 insertion(+), 1 deletion(-)
> >>>
> >>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> >>> b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> >>> index 37751e7..1091585 100644
> >>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> >>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> >>> @@ -1817,7 +1817,7 @@ int amdgpu_ttm_init(struct amdgpu_device
> >> *adev)
> >>>    	/* Change the size here instead of the init above so only lpfn
> >>> is
> >> affected */
> >>>    	amdgpu_ttm_set_buffer_funcs_status(adev, false); -#ifdef
> >>> CONFIG_64BIT
> >>> +#ifdef CONFIG_X86
> >>>    	if (adev->gmc.xgmi.connected_to_cpu)
> >>>    		adev->mman.aper_base_kaddr = ioremap_cache(adev-
> gmc.aper_base,
> >>>    				adev->gmc.visible_vram_size);
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