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| author | Ivan Lipski <ivan.lipski@amd.com> | 2026-08-21 00:04:53 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-09-23 15:18:48 -0400 |
| commit | 21711b6e66bb7b41b1aec67b2d99aafe768c8fcb (patch) | |
| tree | 9ec5052dc2c06508229b3f4877cfff6ddcbb465f | |
| parent | ebf8b0fd8508b744f85a8eee82b745b1d3502dd0 (diff) | |
| download | linux-21711b6e66bb7b41b1aec67b2d99aafe768c8fcb.tar.gz linux-21711b6e66bb7b41b1aec67b2d99aafe768c8fcb.zip | |
drm/amd/display: Bump frame warning limit for clang builds of dml
[Why&How]
When building the DML files with clang without any sanitizer or LTO,
the following -Wframe-larger-than errors break the build under
CONFIG_WERROR:
display_mode_vba_30.c: error: stack frame size (2512) exceeds limit
(2048) in 'dml30_ModeSupportAndSystemConfigurationFull'
display_mode_vba_31.c: error: stack frame size (2416) exceeds limit
(2048) in 'dml31_ModeSupportAndSystemConfigurationFull'
display_mode_vba_314.c: error: stack frame size (2392) exceeds limit
(2048) in 'dml314_ModeSupportAndSystemConfigurationFull'
Clang consistently spills more than gcc, pushing the frame past the 2048
byte limit.
Apply an existing approach of increasing the warn stack size to the
non-sanitizer path so plain clang builds use a 3072 byte limit.
Closes: https://gitlab.freedesktop.org/drm/amd/-/work_items/5642
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dml/Makefile | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dml/Makefile b/drivers/gpu/drm/amd/display/dc/dml/Makefile index 096520bd27c6..79eeb3721b99 100644 --- a/drivers/gpu/drm/amd/display/dc/dml/Makefile +++ b/drivers/gpu/drm/amd/display/dc/dml/Makefile @@ -36,7 +36,11 @@ ifneq ($(CONFIG_FRAME_WARN),0) frame_warn_limit := 3072 endif else - frame_warn_limit := 2048 + ifeq ($(CONFIG_CC_IS_CLANG),y) + frame_warn_limit := 3072 + else + frame_warn_limit := 2048 + endif endif ifeq ($(call test-lt, $(CONFIG_FRAME_WARN), $(frame_warn_limit)),y) |