On Wed, Oct 2, 2019 at 5:03 AM Arnd Bergmann <arnd@xxxxxxxx> wrote:
>
> Just like all the other variants, this one passes invalid
> compile-time options with clang after the new code got
> merged:
>
> clang: error: unknown argument: '-mpreferred-stack-boundary=4'
> scripts/Makefile.build:265: recipe for target 'drivers/gpu/drm/amd/amdgpu/../display/dc/dcn21/dcn21_resource.o' failed
>
> Use the same variant that we have for dcn20 to fix compilation.
>
> Fixes: eced51f9babb ("drm/amd/display: Add hubp block for Renoir (v2)")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Thanks for the patch!
Reviewed-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
Tested-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>
(Though I think it's already been merged)
Alex, do you know why the AMDGPU driver uses a different stack
alignment (16B) than the rest of the x86 kernel? (see
arch/x86/Makefile which uses 8B stack alignment).
> ---
> drivers/gpu/drm/amd/display/dc/dcn21/Makefile | 12 +++++++++++-
> 1 file changed, 11 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dcn21/Makefile b/drivers/gpu/drm/amd/display/dc/dcn21/Makefile
> index 8cd9de8b1a7a..ef673bffc241 100644
> --- a/drivers/gpu/drm/amd/display/dc/dcn21/Makefile
> +++ b/drivers/gpu/drm/amd/display/dc/dcn21/Makefile
> @@ -3,7 +3,17 @@
>
> DCN21 = dcn21_hubp.o dcn21_hubbub.o dcn21_resource.o
>
> -CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o := -mhard-float -msse -mpreferred-stack-boundary=4
> +ifneq ($(call cc-option, -mpreferred-stack-boundary=4),)
> + cc_stack_align := -mpreferred-stack-boundary=4
> +else ifneq ($(call cc-option, -mstack-alignment=16),)
> + cc_stack_align := -mstack-alignment=16
> +endif
> +
> +CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o := -mhard-float -msse $(cc_stack_align)
> +
> +ifdef CONFIG_CC_IS_CLANG
> +CFLAGS_$(AMDDALPATH)/dc/dcn21/dcn21_resource.o += -msse2
> +endif
>
> AMD_DAL_DCN21 = $(addprefix $(AMDDALPATH)/dc/dcn21/,$(DCN21))
>
> --
> 2.20.0
>
> --
> You received this message because you are subscribed to the Google Groups "Clang Built Linux" group.
> To unsubscribe from this group and stop receiving emails from it, send an email to clang-built-linux+unsubscribe@xxxxxxxxxxxxxxxx.
> To view this discussion on the web visit https://groups.google.com/d/msgid/clang-built-linux/20191002120136.1777161-5-arnd%40arndb.de.
--
Thanks,
~Nick Desaulniers
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/dri-devel
