kernel/linux.git/arch/powerpc/boot, branch v6.12.80

powerpc/addnote: Fix overflow on 32-bit builds

2026-01-08T09:14:10+00:00

[ Upstream commit 825ce89a3ef17f84cf2c0eacfa6b8dc9fd11d13f ] The PUT_64[LB]E() macros need to cast the value to unsigned long long like the GET_64[LB]E() macros. Caused lots of warnings when compiled on 32-bit, and clobbered addresses (36-bit P4080). Signed-off-by: Ben Collins Reviewed-by: Christophe Leroy Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/2025042122-mustard-wrasse-694572@boujee-and-buff Signed-off-by: Sasha Levin

powerpc/boot: Fix build with gcc 15

2025-08-28T14:31:10+00:00

commit 5a821e2d69e26b51b7f3740b6b0c3462b8cacaff upstream. Similar to x86 the ppc boot code does not build with GCC 15. Copy the fix from commit ee2ab467bddf ("x86/boot: Use '-std=gnu11' to fix build with GCC 15") Signed-off-by: Michal Suchanek Tested-by: Amit Machhiwal Tested-by: Venkat Rao Bagalkote Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250331105722.19709-1-msuchanek@suse.de Cc: Christophe Leroy Signed-off-by: Greg Kroah-Hartman

powerpc/boot: Fix dash warning

2025-05-09T07:50:37+00:00

[ Upstream commit e3f506b78d921e48a00d005bea5c45ec36a99240 ] 'commit b2accfe7ca5b ("powerpc/boot: Check for ld-option support")' suppressed linker warnings, but the expressed used did not go well with POSIX shell (dash) resulting with this warning arch/powerpc/boot/wrapper: 237: [: 0: unexpected operator ld: warning: arch/powerpc/boot/zImage.epapr has a LOAD segment with RWX permissions Fix the check to handle the reported warning. Patch also fixes couple of shellcheck reported errors for the same line. In arch/powerpc/boot/wrapper line 237: if [ $(${CROSS}ld -v --no-warn-rwx-segments &>/dev/null; echo $?) -eq 0 ]; then ^-- SC2046 (warning): Quote this to prevent word splitting. ^------^ SC2086 (info): Double quote to prevent globbing and word splitting. ^---------^ SC3020 (warning): In POSIX sh, &> is undefined. Fixes: b2accfe7ca5b ("powerpc/boot: Check for ld-option support") Reported-by: Stephen Rothwell Suggested-by: Stephen Rothwell Tested-by: Venkat Rao Bagalkote Reviewed-by: Stephen Rothwell Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250423082154.30625-1-maddy@linux.ibm.com Signed-off-by: Sasha Levin

powerpc/boot: Check for ld-option support

2025-05-09T07:50:36+00:00

[ Upstream commit b2accfe7ca5bc9f9af28e603b79bdd5ad8df5c0b ] Commit 579aee9fc594 ("powerpc: suppress some linker warnings in recent linker versions") enabled support to add linker option "--no-warn-rwx-segments", if the version is greater than 2.39. Similar build warning were reported recently from linker version 2.35.2. ld: warning: arch/powerpc/boot/zImage.epapr has a LOAD segment with RWX permissions ld: warning: arch/powerpc/boot/zImage.pseries has a LOAD segment with RWX permissions Fix the warning by checking for "--no-warn-rwx-segments" option support in linker to enable it, instead of checking for the version range. Fixes: 579aee9fc594 ("powerpc: suppress some linker warnings in recent linker versions") Reported-by: Venkat Rao Bagalkote Suggested-by: Christophe Leroy Tested-by: Venkat Rao Bagalkote Closes: https://lore.kernel.org/linuxppc-dev/61cf556c-4947-4bd6-af63-892fc0966dad@linux.ibm.com/ Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20250401004218.24869-1-maddy@linux.ibm.com Signed-off-by: Sasha Levin

xz: remove XZ_EXTERN and extern from functions

2024-09-02T03:43:27+00:00

XZ_EXTERN was used to make internal functions static in the preboot code. However, in other decompressors this hasn't been done. On x86-64, this makes no difference to the kernel image size. Omit XZ_EXTERN and let some of the internal functions be extern in the preboot code. Omitting XZ_EXTERN from include/linux/xz.h fixes warnings in "make htmldocs" and makes the intradocument links to xz_dec functions work in Documentation/staging/xz.rst. The alternative would have been to add "XZ_EXTERN" to c_id_attributes in Documentation/conf.py but omitting XZ_EXTERN seemed cleaner. Link: https://lore.kernel.org/lkml/20240723205437.3c0664b0@kaneli/ Link: https://lkml.kernel.org/r/20240724110544.16430-1-lasse.collin@tukaani.org Signed-off-by: Lasse Collin Tested-by: Michael Ellerman (powerpc) Cc: Jonathan Corbet Cc: Sam James Cc: Albert Ou Cc: Catalin Marinas Cc: Emil Renner Berthing Cc: Greg Kroah-Hartman Cc: Herbert Xu Cc: Joel Stanley Cc: Jubin Zhong Cc: Jules Maselbas Cc: Krzysztof Kozlowski Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Randy Dunlap Cc: Rui Li Cc: Simon Glass Cc: Thomas Gleixner Cc: Will Deacon Signed-off-by: Andrew Morton

powerpc: Remove 40x leftovers

2024-07-12T01:43:41+00:00

Remove stale references to 40x. Fixes: e939da89d024 ("powerpc: Remove 40x from Kconfig and defconfig") Fixes: 548f5244f106 ("powerpc/40x: Remove EP405") Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://msgid.link/ab30ae302783d8617d407864b92db1b926ab5ab9.1720694914.git.christophe.leroy@csgroup.eu

powerpc/boot: Remove all 40x platforms from boot

2024-06-28T12:28:47+00:00

Remove 40x platforms from the boot directory. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://msgid.link/20240628121201.130802-2-mpe@ellerman.id.au

Merge tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2024-05-18T19:39:20+00:00

Pull Kbuild updates from Masahiro Yamada: - Avoid 'constexpr', which is a keyword in C23 - Allow 'dtbs_check' and 'dt_compatible_check' run independently of 'dt_binding_check' - Fix weak references to avoid GOT entries in position-independent code generation - Convert the last use of 'optional' property in arch/sh/Kconfig - Remove support for the 'optional' property in Kconfig - Remove support for Clang's ThinLTO caching, which does not work with the .incbin directive - Change the semantics of $(src) so it always points to the source directory, which fixes Makefile inconsistencies between upstream and downstream - Fix 'make tar-pkg' for RISC-V to produce a consistent package - Provide reasonable default coverage for objtool, sanitizers, and profilers - Remove redundant OBJECT_FILES_NON_STANDARD, KASAN_SANITIZE, etc. - Remove the last use of tristate choice in drivers/rapidio/Kconfig - Various cleanups and fixes in Kconfig * tag 'kbuild-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (46 commits) kconfig: use sym_get_choice_menu() in sym_check_prop() rapidio: remove choice for enumeration kconfig: lxdialog: remove initialization with A_NORMAL kconfig: m/nconf: merge two item_add_str() calls kconfig: m/nconf: remove dead code to display value of bool choice kconfig: m/nconf: remove dead code to display children of choice members kconfig: gconf: show checkbox for choice correctly kbuild: use GCOV_PROFILE and KCSAN_SANITIZE in scripts/Makefile.modfinal Makefile: remove redundant tool coverage variables kbuild: provide reasonable defaults for tool coverage modules: Drop the .export_symbol section from the final modules kconfig: use menu_list_for_each_sym() in sym_check_choice_deps() kconfig: use sym_get_choice_menu() in conf_write_defconfig() kconfig: add sym_get_choice_menu() helper kconfig: turn defaults and additional prompt for choice members into error kconfig: turn missing prompt for choice members into error kconfig: turn conf_choice() into void function kconfig: use linked list in sym_set_changed() kconfig: gconf: use MENU_CHANGED instead of SYMBOL_CHANGED kconfig: gconf: remove debug code ...

kbuild: use $(src) instead of $(srctree)/$(src) for source directory

2024-05-09T19:34:52+00:00

Kbuild conventionally uses $(obj)/ for generated files, and $(src)/ for checked-in source files. It is merely a convention without any functional difference. In fact, $(obj) and $(src) are exactly the same, as defined in scripts/Makefile.build: src := $(obj) When the kernel is built in a separate output directory, $(src) does not accurately reflect the source directory location. While Kbuild resolves this discrepancy by specifying VPATH=$(srctree) to search for source files, it does not cover all cases. For example, when adding a header search path for local headers, -I$(srctree)/$(src) is typically passed to the compiler. This introduces inconsistency between upstream and downstream Makefiles because $(src) is used instead of $(srctree)/$(src) for the latter. To address this inconsistency, this commit changes the semantics of $(src) so that it always points to the directory in the source tree. Going forward, the variables used in Makefiles will have the following meanings: $(obj) - directory in the object tree $(src) - directory in the source tree (changed by this commit) $(objtree) - the top of the kernel object tree $(srctree) - the top of the kernel source tree Consequently, $(srctree)/$(src) in upstream Makefiles need to be replaced with $(src). Signed-off-by: Masahiro Yamada Reviewed-by: Nicolas Schier

powerpc: Fix typos

2024-05-07T14:21:30+00:00

Fix typos, most reported by "codespell arch/powerpc". Only touches comments, no code changes. Signed-off-by: Bjorn Helgaas Signed-off-by: Michael Ellerman Link: https://msgid.link/20240103231605.1801364-8-helgaas@kernel.org