Commit 273aaa8e authored by Thomas Weißschuh's avatar Thomas Weißschuh Committed by Thomas Gleixner
Browse files

sparc64: vdso: Use 32-bit CHECKFLAGS for compat vDSO 



When building the compat vDSO the CHECKFLAGS from the 64-bit kernel
are used. These are combined with the 32-bit CFLAGS. This confuses
sparse, producing false-positive warnings or potentially missing
real issues.

Manually override the CHECKFLAGS for the compat vDSO with the correct
32-bit configuration.

Reported-by: default avatarkernel test robot <lkp@intel.com>
Signed-off-by: default avatarThomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: default avatarThomas Gleixner <tglx@kernel.org>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Link: https://patch.msgid.link/20260302-vdso-compat-checkflags-v2-2-78e55baa58ba@linutronix.de
Closes: https://lore.kernel.org/lkml/202511030021.9v1mIgts-lkp@intel.com/
parent 56f85f67

arch/sparc/vdso/Makefile

+3 −0
Original line number Diff line number Diff line
@@ -90,6 +90,9 @@ KBUILD_CFLAGS_32 += -DDISABLE_BRANCH_PROFILING 
KBUILD_CFLAGS_32 += -mv8plus

$(obj)/vdso32.so.dbg: KBUILD_CFLAGS = $(KBUILD_CFLAGS_32)



CHECKFLAGS_32 := $(filter-out -m64 -D__sparc_v9__ -D__arch64__, $(CHECKFLAGS)) -m32

$(obj)/vdso32.so.dbg: CHECKFLAGS = $(CHECKFLAGS_32)



$(obj)/vdso32.so.dbg: FORCE \

			$(obj)/vdso32/vdso32.lds \

			$(obj)/vdso32/vclock_gettime.o \