Hi Palmer,
On Thu, May 30, 2024 at 07:57:42AM -0700, Palmer Dabbelt wrote:
> From: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
>
> I get a handful of build errors along the lines of
>
> linux/drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c:58:13: error: stack frame size (2352) exceeds limit (2048) in 'DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation' [-Werror,-Wframe-larger-than]
> static void DISPCLKDPPCLKDCFCLKDeepSleepPrefetchParametersWatermarksAndPerformanceCalculation(
> ^
> linux/drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dcn32/display_mode_vba_32.c:1724:6: error: stack frame size (2096) exceeds limit (2048) in 'dml32_ModeSupportAndSystemConfigurationFull' [-Werror,-Wframe-larger-than]
> void dml32_ModeSupportAndSystemConfigurationFull(struct display_mode_lib *mode_lib)
> ^
Judging from the message, this is clang/LLVM? What version? I assume
this showed up in 6.10-rc1 because of commit 77acc6b55ae4 ("riscv: add
support for kernel-mode FPU"), which allows this driver to be built for
RISC-V. Is this allmodconfig or some other configuration?
> as of 6.10-rc1.
>
> Signed-off-by: Palmer Dabbelt <palmer@xxxxxxxxxxxx>
> ---
> drivers/gpu/drm/amd/display/dc/dml/Makefile | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile b/drivers/gpu/drm/amd/display/dc/dml/Makefile
> index c4a5efd2dda5..b2bd72e63734 100644
> --- a/drivers/gpu/drm/amd/display/dc/dml/Makefile
> +++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile
> @@ -62,9 +62,9 @@ endif
>
> ifneq ($(CONFIG_FRAME_WARN),0)
> ifeq ($(filter y,$(CONFIG_KASAN)$(CONFIG_KCSAN)),y)
> -frame_warn_flag := -Wframe-larger-than=3072
> +frame_warn_flag := -Wframe-larger-than=4096
> else
> -frame_warn_flag := -Wframe-larger-than=2048
> +frame_warn_flag := -Wframe-larger-than=3072
> endif
> endif
>
> --
> 2.45.1
>
