On Thu, 13 Jun 2024, flyingpenghao@xxxxxxxxx wrote: > From: Peng Hao <flyingpeng@xxxxxxxxxxx> > > When building kernel with clang, which will typically > have sanitizers enabled, there is a warning about a large stack frame. > > drivers/gpu/drm/i915/gt/intel_workarounds.c:3044:6: error: stack frame size (5176) > exceeds limit (2048) in 'intel_engine_init_workarounds' [-Werror,-Wframe-larger-than] > void intel_engine_init_workarounds(struct intel_engine_cs *engine) > ^ > 128/5176 (2.47%) spills, 5048/5176 (97.53%) variables > > so increase the limit for configurations that have KASAN or KCSAN enabled for not > breaking the majority of builds. We need to fix the issue instead of sweeping it under the carpet. Also, please see MAINTAINERS for where to send i915 patches. BR, Jani. > > Signed-off-by: Peng Hao <flyingpeng@xxxxxxxxxxx> > --- > drivers/gpu/drm/i915/Makefile | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/gpu/drm/i915/Makefile b/drivers/gpu/drm/i915/Makefile > index fba73c38e235..884e2f010bdd 100644 > --- a/drivers/gpu/drm/i915/Makefile > +++ b/drivers/gpu/drm/i915/Makefile > @@ -36,7 +36,11 @@ subdir-ccflags-$(CONFIG_DRM_I915_WERROR) += -Werror > CFLAGS_i915_pci.o = -Wno-override-init > CFLAGS_display/intel_display_device.o = -Wno-override-init > CFLAGS_display/intel_fbdev.o = -Wno-override-init > - > +ifneq ($(CONFIG_FRAME_WARN),0) > +ifeq ($(filter y,$(CONFIG_KASAN)$(CONFIG_KCSAN)),y) > +CFLAGS_gt/intel_workarounds.o = -Wframe-larger-than=5272 > +endif > +endif > # Support compiling the display code separately for both i915 and xe > # drivers. Define I915 when building i915. > subdir-ccflags-y += -DI915 -- Jani Nikula, Intel
