On Sat, Aug 8, 2026 at 6:05 AM <[email protected]> wrote: > > From: Ivan Lipski <[email protected]> > > [Why] > During compilation with allmodconfig with KASAN, there appears a Werror: > > dml2_core_dcn5_funcs_mode_programming.c:11:13: error: stack frame size > (2400) exceeds limit (2048) in 'dcn5_mode_programming' > [-Werror,-Wframe-larger-than] > > The dcn5/dcn6 dml2_core_*_funcs_mode_{programming,support} files were > split out of dml2_core_dcn4_calcs.o, which carries a relaxed > -Wframe-larger-than limit via $(frame_warn_flag) (2056 normally, or > 4096 for clang + KASAN/KCSAN + COMPILE_TEST). The split-out files were > never added to the per-file CFLAGS override list, so they inherited the > strict global default of 2048. This is why these files trip the frame > size warning under KASAN while the larger dml2_core_dcn4_calcs.o does > not. > > [How] > Apply the same $(frame_warn_flag) and CFLAGS_REMOVE handling used for > dml2_core_dcn4_calcs.o to the split-out files: > - dml2_core_dcn5_funcs_mode_programming.o > - dml2_core_dcn5_funcs_mode_support.o > - dml2_core_dcn6_funcs_mode_programming.o > - dml2_core_dcn6_funcs_mode_support.o > > Fixes: 7f7d7ea1fa51 ("drm/amd/display: Add new sources for DCN6") > > Reviewed-by: Dillon Varone <[email protected]> > Signed-off-by: Ivan Lipski <[email protected]>
Reported-by: Mark Brown <[email protected]> Acked-by: Alex Deucher <[email protected]> > --- > drivers/gpu/drm/amd/display/dc/dml2_0/Makefile | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/drivers/gpu/drm/amd/display/dc/dml2_0/Makefile > b/drivers/gpu/drm/amd/display/dc/dml2_0/Makefile > index 35d697872a9a..5388bf094fbc 100644 > --- a/drivers/gpu/drm/amd/display/dc/dml2_0/Makefile > +++ b/drivers/gpu/drm/amd/display/dc/dml2_0/Makefile > @@ -75,11 +75,19 @@ $(foreach obj,$(DML2_RELATIVE_O_FILES),$(eval > CFLAGS_REMOVE_$(AMDDALPATH)/$(obj) > CFLAGS_$(AMDDALPATH)/dc/dml2_0/display_mode_core.o := $(dml2_ccflags) > $(frame_warn_flag) > CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn4_calcs.o := > $(dml2_ccflags) $(frame_warn_flag) > CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_utils.o := > $(dml2_ccflags) $(frame_warn_flag) > +CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn5_funcs_mode_programming.o > := $(dml2_ccflags) $(frame_warn_flag) > +CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn5_funcs_mode_support.o > := $(dml2_ccflags) $(frame_warn_flag) > +CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn6_funcs_mode_programming.o > := $(dml2_ccflags) $(frame_warn_flag) > +CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn6_funcs_mode_support.o > := $(dml2_ccflags) $(frame_warn_flag) > CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml2_wrapper.o := $(dml2_rcflags) > CFLAGS_$(AMDDALPATH)/dc/dml2_0/dml21/dml21_wrapper.o := $(dml2_rcflags) > CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/display_mode_core.o := $(dml2_rcflags) > > CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn4_calcs.o > := $(dml2_rcflags) > CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_utils.o > := $(dml2_rcflags) > +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn5_funcs_mode_programming.o > := $(dml2_rcflags) > +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn5_funcs_mode_support.o > := $(dml2_rcflags) > +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn6_funcs_mode_programming.o > := $(dml2_rcflags) > +CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/src/dml2_core/dml2_core_dcn6_funcs_mode_support.o > := $(dml2_rcflags) > CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml2_wrapper.o := $(dml2_ccflags) > CFLAGS_REMOVE_$(AMDDALPATH)/dc/dml2_0/dml21/dml21_wrapper.o := > $(dml2_ccflags) > > -- > 2.43.0 >
