[PATCH 2/2] drm/amd/display: Fix stack size issue on DML2

[Guenter Roeck]

On Mon, Oct 16, 2023 at 08:19:18AM -0600, Rodrigo Siqueira wrote:
> This commit is the last part of the fix that reduces the stack size in
> the DML2 code.
> 

That does not really help when trying to build allmodconfig or allyesconfig
with gcc 11.4 or 12.3.

drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/display_mode_core.c: In function 'dml_prefetch_check':
drivers/gpu/drm/amd/amdgpu/../display/dc/dml2/display_mode_core.c:6707:1: error: the frame size of 2056 bytes is larger than 2048 bytes

This is with v6.6-14500-g1c41041124bd.

I am overwriting it by forcing CONFIG_FRAME_WARN=0 in my test builds for
x86_64, but of course that affects all code. Maybe consider increasing
frame-larger-than in drivers/gpu/drm/amd/display/dc/dml2/Makefile ?
Currently it is

ifneq ($(CONFIG_FRAME_WARN),0)
frame_warn_flag := -Wframe-larger-than=2048
endif

Guenter