linux-dev/arch/parisc/boot/compressed/Makefile, branch master

Merge tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2022-01-19T09:15:19Z

Pull Kbuild updates from Masahiro Yamada: - Add new kconfig target 'make mod2noconfig', which will be useful to speed up the build and test iteration. - Raise the minimum supported version of LLVM to 11.0.0 - Refactor certs/Makefile - Change the format of include/config/auto.conf to stop double-quoting string type CONFIG options. - Fix ARCH=sh builds in dash - Separate compression macros for general purposes (cmd_bzip2 etc.) and the ones for decompressors (cmd_bzip2_with_size etc.) - Misc Makefile cleanups * tag 'kbuild-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (34 commits) kbuild: add cmd_file_size arch: decompressor: remove useless vmlinux.bin.all-y kbuild: rename cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22} kbuild: drop $(size_append) from cmd_zstd sh: rename suffix-y to suffix_y doc: kbuild: fix default in `imply` table microblaze: use built-in function to get CPU_{MAJOR,MINOR,REV} certs: move scripts/extract-cert to certs/ kbuild: do not quote string values in include/config/auto.conf kbuild: do not include include/config/auto.conf from shell scripts certs: simplify $(srctree)/ handling and remove config_filename macro kbuild: stop using config_filename in scripts/Makefile.modsign certs: remove misleading comments about GCC PR certs: refactor file cleaning certs: remove unneeded -I$(srctree) option for system_certificates.o certs: unify duplicated cmd_extract_certs and improve the log certs: use $< and $@ to simplify the key generation rule kbuild: remove headers_check stub kbuild: move headers_check.pl to usr/include/ certs: use if_changed to re-generate the key when the key type is changed ...

arch: decompressor: remove useless vmlinux.bin.all-y

2022-01-13T17:55:44Z

Presumably, arch/{parisc,s390,sh}/boot/compressed/Makefile copied arch/x86/boot/compressed/Makefile, but vmlinux.bin.all-y is useless here because it is the same as $(obj)/vmlinux.bin. Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier

kbuild: rename cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22}

2022-01-13T17:54:05Z

GZIP-compressed files end with 4 byte data that represents the size of the original input. The decompressors (the self-extracting kernel) exploit it to know the vmlinux size beforehand. To mimic the GZIP's trailer, Kbuild provides cmd_{bzip2,lzma,lzo,lz4,xzkern,zstd22}. Unfortunately these macros are used everywhere despite the appended size data is only useful for the decompressors. There is no guarantee that such hand-crafted trailers are safely ignored. In fact, the kernel refuses compressed initramdfs with the garbage data. That is why usr/Makefile overrides size_append to make it no-op. To limit the use of such broken compressed files, this commit renames the existing macros as follows: cmd_bzip2 --> cmd_bzip2_with_size cmd_lzma --> cmd_lzma_with_size cmd_lzo --> cmd_lzo_with_size cmd_lz4 --> cmd_lz4_with_size cmd_xzkern --> cmd_xzkern_with_size cmd_zstd22 --> cmd_zstd22_with_size To keep the decompressors working, I updated the following Makefiles accordingly: arch/arm/boot/compressed/Makefile arch/h8300/boot/compressed/Makefile arch/mips/boot/compressed/Makefile arch/parisc/boot/compressed/Makefile arch/s390/boot/compressed/Makefile arch/sh/boot/compressed/Makefile arch/x86/boot/compressed/Makefile I reused the current macro names for the normal usecases; they produce the compressed data in the proper format. I did not touch the following: arch/arc/boot/Makefile arch/arm64/boot/Makefile arch/csky/boot/Makefile arch/mips/boot/Makefile arch/riscv/boot/Makefile arch/sh/boot/Makefile kernel/Makefile This means those Makefiles will stop appending the size data. I dropped the 'override size_append' hack from usr/Makefile. Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier

parisc: decompressor: do not copy source files while building

2022-01-05T00:22:13Z

As commit 7ae4a78daacf ("ARM: 8969/1: decompressor: simplify libfdt builds") stated, copying source files during the build time may not end up with as clean code as expected. Do similar for parisc to clean up the Makefile. Signed-off-by: Masahiro Yamada Acked-by: Helge Deller Signed-off-by: Helge Deller

parisc: decompressor: clean up Makefile

2021-11-01T06:36:01Z

Do not list the same objects in 'OBJECTS' and 'targets'. Instead, add $(OBJECTS) to 'targets'. Signed-off-by: Masahiro Yamada Signed-off-by: Helge Deller

parisc: decompressor: remove repeated depenency of misc.o

2021-11-01T06:36:01Z

The same dependency $(obj)/misc.o: $(obj)/sizes.h ... appears twice, at line 29 and line 55 in this Makefile. Remove the second one. Signed-off-by: Masahiro Yamada Signed-off-by: Helge Deller

parisc: Add missing FORCE prerequisite in Makefile

2021-09-09T10:44:30Z

Signed-off-by: Helge Deller

parisc: use -fno-strict-aliasing for decompressor

2020-05-10T20:46:19Z

An experimental patch series of mine reworks how warnings are processed in Kbuild. A side effect is a new warning about a harmless aliasing rule violation in an inline function: In file included from include/linux/rhashtable-types.h:15:0, from include/linux/ipc.h:7, from include/uapi/linux/sem.h:5, from include/linux/sem.h:5, from include/linux/sched.h:15, from include/linux/uaccess.h:6, from arch/parisc/boot/compressed/misc.c:7: include/linux/workqueue.h: In function 'work_static': include/linux/workqueue.h:212:2: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing] return *work_data_bits(work) & WORK_STRUCT_STATIC; Make the decompressor use -fno-strict-aliasing like the rest of the kernel for consistency, and to ensure this warning never makes it into a release. Reported-by: kbuild test robot Signed-off-by: Arnd Bergmann Signed-off-by: Helge Deller

parisc: Add archclean Makefile target

2019-08-01T12:20:55Z

Apparently we don't have an archclean target in our arch/parisc/Makefile, so files in there never get cleaned out by make mrproper. This, in turn means that the sizes.h file in arch/parisc/boot/compressed never gets removed and worse, when you transition to an O=build/parisc[64] build model it overrides the generated file. The upshot being my bzImage was building with a SZ_end that was too small. I fixed it by making mrproper clean everything. Signed-off-by: James Bottomley Cc: stable@vger.kernel.org # v4.20+ Signed-off-by: Helge Deller

parisc: Strip debug info from kernel before creating compressed vmlinuz

2019-08-01T12:17:53Z

Same as on x86-64, strip the .comment, .note and debug sections from the Linux kernel before creating the compressed image for the boot loader. Reported-by: James Bottomley Reported-by: Sven Schnelle Cc: stable@vger.kernel.org # v4.20+ Signed-off-by: Helge Deller