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i=samitolvanen@google.com; h=from:subject; bh=3WQdWhlcAt5RMELpv6jN3CIGB4FcQWFJOyPQ1BhboU0=; b=owGbwMvMwCEWxa662nLh8irG02pJDOnrEuUaKxl4F/+xmM1p7nSqL69ELmXL3XcJvYuecT44e na15V/tjlIWBjEOBlkxRZaWr6u37v7ulPrqc5EEzBxWJpAhDFycAjARpnMM/wwTH7/cm1r2Ql1M y3mVlPSyyb8eCm+/EKM7q64zf8utD48ZGZbuDcnyuhfqmCjo18i09ftyfd+nW3zO8TOHe03beoM vihUA X-Mailer: git-send-email 2.48.1.601.g30ceb7b040-goog Message-ID: <20250213211614.3537605-2-samitolvanen@google.com> Subject: [PATCH] s390/purgatory: Use -D__DISABLE_EXPORTS From: Sami Tolvanen To: Masahiro Yamada , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle Cc: Sami Tolvanen , kernel test robot , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The object files in purgatory do not export symbols, so disable exports for all the object files, not only sha256.o, with -D__DISABLE_EXPORTS. This fixes a build failure with CONFIG_GENDWARFKSYMS, where we would otherwise attempt to calculate symbol versions for purgatory objects and fail because they're not built with debugging information: error: gendwarfksyms: process_module: dwarf_get_units failed: no debugging = information? make[5]: *** [../scripts/Makefile.build:207: arch/s390/purgatory/string.o] = Error 1 make[5]: *** Deleting file 'arch/s390/purgatory/string.o' Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202502120752.U3fOKScQ-lkp@int= el.com/ Signed-off-by: Sami Tolvanen --- arch/s390/purgatory/Makefile | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/s390/purgatory/Makefile b/arch/s390/purgatory/Makefile index bdcf2a3b6c41..bd39b36e7bd6 100644 --- a/arch/s390/purgatory/Makefile +++ b/arch/s390/purgatory/Makefile @@ -8,7 +8,7 @@ PURGATORY_OBJS =3D $(addprefix $(obj)/,$(purgatory-y)) $(obj)/sha256.o: $(srctree)/lib/crypto/sha256.c FORCE $(call if_changed_rule,cc_o_c) =20 -CFLAGS_sha256.o :=3D -D__DISABLE_EXPORTS -D__NO_FORTIFY +CFLAGS_sha256.o :=3D -D__NO_FORTIFY =20 $(obj)/mem.o: $(srctree)/arch/s390/lib/mem.S FORCE $(call if_changed_rule,as_o_S) @@ -19,9 +19,11 @@ KBUILD_CFLAGS +=3D -fno-zero-initialized-in-bss -fno-bui= ltin -ffreestanding KBUILD_CFLAGS +=3D -Os -m64 -msoft-float -fno-common KBUILD_CFLAGS +=3D -fno-stack-protector KBUILD_CFLAGS +=3D -DDISABLE_BRANCH_PROFILING +KBUILD_CFLAGS +=3D -D__DISABLE_EXPORTS KBUILD_CFLAGS +=3D $(CLANG_FLAGS) KBUILD_CFLAGS +=3D $(call cc-option,-fno-PIE) KBUILD_AFLAGS :=3D $(filter-out -DCC_USING_EXPOLINE,$(KBUILD_AFLAGS)) +KBUILD_AFLAGS +=3D -D__DISABLE_EXPORTS =20 # Since we link purgatory with -r unresolved symbols are not checked, so we # also link a purgatory.chk binary without -r to check for unresolved symb= ols. base-commit: 4dc1d1bec89864d8076e5ab314f86f46442bfb02 --=20 2.48.1.601.g30ceb7b040-goog