[radeon-alex:drm-next-4.12-wip 34/40] drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c:620:4: warning: left shift count >= width of type

[Christian König]

Mhm, guys any idea why the build bot is spamming us with that warning?

The type is 64bit and the shift is 63, so that should work fine.

Regards,
Christian.

Am 10.02.2017 um 20:48 schrieb kbuild test robot:
> tree:   git://people.freedesktop.org/~agd5f/linux.git drm-next-4.12-wip
> head:   d32ff0ea8e22964abcc6406e00a0646f2bfb94c7
> commit: 382a21d981661dbc8198c37dc95707e1e381ce76 [34/40] drm/amdgpu: IOCTL interface for PRT support v4
> config: xtensa-allmodconfig (attached as .config)
> compiler: xtensa-linux-gcc (GCC) 4.9.0
> reproduce:
>          wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          git checkout 382a21d981661dbc8198c37dc95707e1e381ce76
>          # save the attached .config to linux build tree
>          make.cross ARCH=xtensa
>
> All warnings (new ones prefixed by >>):
>
>     drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c: In function 'amdgpu_gem_va_ioctl':
>>> drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c:620:4: warning: left shift count >= width of type
>         va_flags |= AMDGPU_PTE_PRT;
>         ^
>
> vim +620 drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
>
>     604				r = -ENOENT;
>     605				goto error_backoff;
>     606			}
>     607		} else {
>     608			bo_va = fpriv->prt_va;
>     609		}
>     610	
>     611		switch (args->operation) {
>     612		case AMDGPU_VA_OP_MAP:
>     613			if (args->flags & AMDGPU_VM_PAGE_READABLE)
>     614				va_flags |= AMDGPU_PTE_READABLE;
>     615			if (args->flags & AMDGPU_VM_PAGE_WRITEABLE)
>     616				va_flags |= AMDGPU_PTE_WRITEABLE;
>     617			if (args->flags & AMDGPU_VM_PAGE_EXECUTABLE)
>     618				va_flags |= AMDGPU_PTE_EXECUTABLE;
>     619			if (args->flags & AMDGPU_VM_PAGE_PRT)
>   > 620				va_flags |= AMDGPU_PTE_PRT;
>     621			r = amdgpu_vm_bo_map(adev, bo_va, args->va_address,
>     622					     args->offset_in_bo, args->map_size,
>     623					     va_flags);
>     624			break;
>     625		case AMDGPU_VA_OP_UNMAP:
>     626			r = amdgpu_vm_bo_unmap(adev, bo_va, args->va_address);
>     627			break;
>     628		default:
>
> ---
> 0-DAY kernel test infrastructure                Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all                   Intel Corporation
>
>
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