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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull hardening updates from Kees Cook:
- lkdtm/bugs: add test for hung smp_call_function_single() (Mark
Rutland)
- gcc-plugins: Remove duplicate included header file stringpool.h
(Thorsten Blum)
- ARM: Remove address checking for MMUless devices (Yanjun Yang)
- randomize_kstack: Clean up per-arch entropy and codegen
- KCFI: Make FineIBT mode Kconfig selectable
- fortify: Do not special-case 0-sized destinations
* tag 'hardening-v6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
randomize_kstack: Improve stack alignment codegen
ARM: Remove address checking for MMUless devices
gcc-plugins: Remove duplicate included header file stringpool.h
randomize_kstack: Remove non-functional per-arch entropy filtering
fortify: Do not special-case 0-sized destinations
x86/alternatives: Make FineIBT mode Kconfig selectable
lkdtm/bugs: add test for hung smp_call_function_single()
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git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic updates from Arnd Bergmann:
"Most of this is part of my ongoing work to clean up the system call
tables. In this bit, all of the newer architectures are converted to
use the machine readable syscall.tbl format instead in place of
complex macros in include/uapi/asm-generic/unistd.h.
This follows an earlier series that fixed various API mismatches and
in turn is used as the base for planned simplifications.
The other two patches are dead code removal and a warning fix"
* tag 'asm-generic-6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
vmlinux.lds.h: catch .bss..L* sections into BSS")
fixmap: Remove unused set_fixmap_offset_io()
riscv: convert to generic syscall table
openrisc: convert to generic syscall table
nios2: convert to generic syscall table
loongarch: convert to generic syscall table
hexagon: use new system call table
csky: convert to generic syscall table
arm64: rework compat syscall macros
arm64: generate 64-bit syscall.tbl
arm64: convert unistd_32.h to syscall.tbl format
arc: convert to generic syscall table
clone3: drop __ARCH_WANT_SYS_CLONE3 macro
kbuild: add syscall table generation to scripts/Makefile.asm-headers
kbuild: verify asm-generic header list
loongarch: avoid generating extra header files
um: don't generate asm/bpf_perf_event.h
csky: drop asm/gpio.h wrapper
syscalls: add generic scripts/syscall.tbl
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cpu mitigation updates from Borislav Petkov:
- Add a spectre_bhi=vmexit mitigation option aimed at cloud
environments
- Remove duplicated Spectre cmdline option documentation
- Add separate macro definitions for syscall handlers which do not
return in order to address objtool warnings
* tag 'x86_bugs_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/bugs: Add 'spectre_bhi=vmexit' cmdline option
x86/bugs: Remove duplicate Spectre cmdline option descriptions
x86/syscall: Mark exit[_group] syscall handlers __noreturn
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build update from Borislav Petkov:
- Make sure insn support detection uses the proper compiler flag in
bi-arch builds
* tag 'x86_build_for_v6.11_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/kconfig: Add as-instr64 macro to properly evaluate AS_WRUSS
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap updates from Mark Brown:
"There's one new feature here, a regmap_multi_reg_read() matching the
existing write function which has some IIO users coming.
This allows atomic reads from multiple registers without the need to
wrap a higher level lock in the client driver just for regmap (which
already has locks anyway).
We also have one fix for the KUnit tests, and a bunch of cleanups"
* tag 'regmap-v6.11' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: kunit: Add test cases for regmap_multi_reg_(read,write}()
regmap: Implement regmap_multi_reg_read()
regmap-irq: handle const struct regmap_irq_sub_irq_map
const_structs.checkpatch: add regmap structs
regmap: add missing MODULE_DESCRIPTION() macros
regmap-i2c: add missing MODULE_DESCRIPTION() macro
regmap: kunit: Use array_size() and sizeof(*ptr) consistently
regmap: maple: Switch to use kmemdup_array()
regmap: cache: Switch to use kmemdup_array()
regmap: cache: Use correct type of the rb_for_each() parameter
regmap: Switch to use kmemdup_array()
regmap: kunit: add missing MODULE_DESCRIPTION()
regmap: kunit: Fix memory leaks in gen_regmap() and gen_raw_regmap()
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After 8d1001f7bdd0 (kbuild: rpm-pkg: fix build error with CONFIG_MODULES=n),
the following warning "warning: File listed twice: *.dtb" is appearing for
every dtb file that is included.
The reason is that the commented commit already adds the folder
/lib/modules/%{KERNELRELEASE} in kernel.list file so the folder
/lib/modules/%{KERNELRELEASE}/dtb is no longer necessary, just remove it.
Fixes: 8d1001f7bdd0 ("kbuild: rpm-pkg: fix build error with CONFIG_MODULES=n")
Signed-off-by: Jose Ignacio Tornos Martinez <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Tested-by: Nathan Chancellor <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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After [1] in upstream LLVM, ld.lld's version output became slightly
different when the cmake configuration option LLVM_APPEND_VC_REV is
disabled.
Before:
Debian LLD 19.0.0 (compatible with GNU linkers)
After:
Debian LLD 19.0.0, compatible with GNU linkers
This results in ld-version.sh failing with
scripts/ld-version.sh: 18: arithmetic expression: expecting EOF: "10000 * 19 + 100 * 0 + 0,"
because the trailing comma is included in the patch level part of the
expression. While [1] has been partially reverted in [2] to avoid this
breakage (as it impacts the configuration stage and it is present in all
LTS branches), it would be good to make ld-version.sh more robust
against such miniscule changes like this one.
Use POSIX shell parameter expansion [3] to remove the largest suffix
after just numbers and periods, replacing of the current removal of
everything after a hyphen. ld-version.sh continues to work for a number
of distributions (Arch Linux, Debian, and Fedora) and the kernel.org
toolchains and no longer errors on a version of ld.lld with [1].
Fixes: 02aff8592204 ("kbuild: check the minimum linker version in Kconfig")
Link: https://github.com/llvm/llvm-project/commit/0f9fbbb63cfcd2069441aa2ebef622c9716f8dbb [1]
Link: https://github.com/llvm/llvm-project/commit/649cdfc4b6781a350dfc87d9b2a4b5a4c3395909 [2]
Link: https://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html [3]
Suggested-by: Fangrui Song <[email protected]>
Reviewed-by: Fangrui Song <[email protected]>
Signed-off-by: Nathan Chancellor <[email protected]>
Reviewed-by: Nicolas Schier <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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The uapi/asm/unistd_{32,64}.h and asm/syscall_table_{32,64}.h headers can
now be generated from scripts/syscall.tbl, which makes this consistent
with the other architectures that have their own syscall.tbl.
riscv has two extra system call that gets added to scripts/syscall.tbl.
The newstat and rlimit entries in the syscall_abis_64 line are for system
calls that were part of the generic ABI when riscv64 got added but are
no longer enabled by default for new architectures. Both riscv32 and
riscv64 also implement memfd_secret, which is optional for all
architectures.
Unlike all the other 32-bit architectures, the time32 and stat64
sets of syscalls are not enabled on riscv32.
Both the user visible side of asm/unistd.h and the internal syscall
table in the kernel should have the same effective contents after this.
Signed-off-by: Arnd Bergmann <[email protected]>
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The uapi/asm/unistd_32.h and asm/syscall_table_32.h headers can now be
generated from scripts/syscall.tbl, which makes this consistent with
the other architectures that have their own syscall.tbl.
openrisc has one extra system call that gets added to scripts/syscall.tbl.
The time32, stat64, rlimit and renameat entries in the syscall_abis_32
line are for system calls that were part of the generic ABI when
arch/nios2 got added but are no longer enabled by default for new
architectures.
Both the user visible side of asm/unistd.h and the internal syscall
table in the kernel should have the same effective contents after this.
When asm/syscalls.h is included in kernel/fork.c for the purpose of
type checking, the redirection macros cause problems. Move these so
only the references get redirected.
Signed-off-by: Arnd Bergmann <[email protected]>
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The uapi/asm/unistd_32.h and asm/syscall_table_32.h headers can now be
generated from scripts/syscall.tbl, which makes this consistent with
the other architectures that have their own syscall.tbl.
nios2 has one extra system call that gets added to scripts/syscall.tbl.
The time32, stat64, and rlimit entries in the syscall_abis_32
line are for system calls that were part of the generic ABI when
arch/nios2 got added but are no longer enabled by default for new
architectures.
Both the user visible side of asm/unistd.h and the internal syscall
table in the kernel should have the same effective contents after this.
Signed-off-by: Arnd Bergmann <[email protected]>
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The uapi/asm/unistd_32.h and asm/syscall_table_32.h headers can now be
generated from scripts/syscall.tbl, which makes this consistent with
the other architectures that have their own syscall.tbl.
csky has two architecture specific system calls, which I add to
the generic table. The time32, stat64 and rlimit entries in the
syscall_abis_32 line are for system calls that were part of the generic
ABI when arch/csky got added but are no longer enabled by default for
new architectures.
Both the user visible side of asm/unistd.h and the internal syscall
table in the kernel should have the same effective contents after this.
Signed-off-by: Arnd Bergmann <[email protected]>
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The uapi/asm/unistd_32.h and asm/syscall_table_32.h headers can now be
generated from scripts/syscall.tbl, which makes this consistent with
the other architectures that have their own syscall.tbl.
arc has a couple of architecture specific system calls, which I add to the
generic table. This for some reason includes the deprecated sys_sysfs()
syscall that was presumably added by accident.
The time32, renameat, stat64 and rlimit entries in the syscall_abis_32
entry are for system calls that were part of the generic ABI when arch/arc
got added but are no longer enabled by default for new architectures.
Both the user visible side of asm/unistd.h and the internal syscall
table in the kernel should have the same effective contents after this.
Signed-off-by: Arnd Bergmann <[email protected]>
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There are 11 copies of arch/*/kernel/syscalls/Makefile that all implement
the same basic logic in a somewhat awkward way.
I tried out various ways of unifying the existing copies and ended up
with something that hooks into the logic for generating the redirections
to asm-generic headers. This gives a nicer syntax of being able to list
the generated files in $(syscall-y) inside of arch/*/include/asm/Kbuild
instead of both $(generated-y) in that place and also in another
Makefile.
The configuration for which syscall.tbl file to use and which ABIs to
enable is now done in arch/*/kernel/Makefile.syscalls. I have done
patches for all architectures and made sure that the new generic
rules implement a superset of all the architecture specific corner
cases.
ince the header file is not specific to asm-generic/*.h redirects
now, I ended up renaming the file to scripts/Makefile.asm-headers.
Signed-off-by: Arnd Bergmann <[email protected]>
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In order to integrate the system call header generation with generating
the asm-generic wrappers, restrict the generated headers to those that
actually exist in include/asm-generic/.
The path is already known, so add these as a dependency.
The asm-generic/bugs.h header was removed in commit 61235b24b9cb ("init:
Remove check_bugs() leftovers"), which now causes a build failure, so
drop it from the list.
Signed-off-by: Arnd Bergmann <[email protected]>
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The header file stringpool.h is included for GCC version >= 8 and then
again for all versions.
Since the header file stringpool.h was added in GCC 4.9 and the kernel
currently requires GCC 5.1 as a minimum, remove the conditional include.
Including the header file only once removes the following warning
reported by make includecheck:
stringpool.h is included more than once
However, it's important to include stringpool.h before attribs.h
because attribs.h uses some of its functions.
Compile-tested with GCC 14.
Signed-off-by: Thorsten Blum <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Kees Cook <[email protected]>
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The struct instances supplied by the drivers are never modified.
Handle them as const in the regmap core allowing the drivers to put them
into .rodata.
Also add a new entry to const_structs.checkpatch to make sure future
instances of this struct already enter the tree as const.
Signed-off-by: Thomas Weißschuh <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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Many structs used by regmap should be const by default.
Add entries to const_structs.checkpatch for them for checkpatch.pl to
warn on new non-const additions.
Signed-off-by: Thomas Weißschuh <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>
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The asm-generic/unistd.h header still follows the old style of defining
system call numbers and the table. Most architectures got the new
syscall.tbl format as part of the y2038 conversion back in 2018, but
the newer architectures that share a single table never did.
I did a semi-automated conversion of the asm-generic/unistd.h contents
into a syscall.tbl format, using the ABI field to take care of all
the relevant differences that are encoded using #ifdef checks in the
existing header.
Conversion of the architectures is done one at a time in order to
be able to review or revert them as needed.
Signed-off-by: Arnd Bergmann <[email protected]>
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The direct-call syscall dispatch function doesn't know that the exit()
and exit_group() syscall handlers don't return, so the call sites aren't
optimized accordingly.
Fix that by marking the exit syscall declarations __noreturn.
Fixes the following warnings:
vmlinux.o: warning: objtool: x64_sys_call+0x2804: __x64_sys_exit() is missing a __noreturn annotation
vmlinux.o: warning: objtool: ia32_sys_call+0x29b6: __ia32_sys_exit_group() is missing a __noreturn annotation
Fixes: 1e3ad78334a6 ("x86/syscall: Don't force use of indirect calls for system calls")
Closes: https://lkml.kernel.org/lkml/6dba9b32-db2c-4e6d-9500-7a08852f17a3@paulmck-laptop
Reported-by: Paul E. McKenney <[email protected]>
Signed-off-by: Josh Poimboeuf <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Tested-by: Paul E. McKenney <[email protected]>
Link: https://lore.kernel.org/r/5d8882bc077d8eadcc7fd1740b56dfb781f12288.1719381528.git.jpoimboe@kernel.org
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Use the "abspath" call when symlinking the gdb python scripts in
scripts/gdb/linux. This call is needed to avoid broken links when
running the scripts_gdb target on a build directory located directly
under the source tree (e.g., O=builddir).
Fixes: 659bbf7e1b08 ("kbuild: scripts/gdb: Replace missed $(srctree)/$(src) w/ $(src)")
Signed-off-by: Joel Granados <[email protected]>
Reviewed-by: Douglas Anderson <[email protected]>
Tested-by: Douglas Anderson <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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Use $(obj)/ instead of $(src)/ prefix when building C++ modules for
host, as explained in commit b1992c3772e6 ("kbuild: use $(src) instead
of $(srctree)/$(src) for source directory"). This fixes build failures
of 'xconfig':
$ make O=build/ xconfig
make[1]: Entering directory '/data/linux/kbuild-review/build'
GEN Makefile
make[3]: *** No rule to make target '../scripts/kconfig/qconf-moc.cc', needed by 'scripts/kconfig/qconf-moc.o'. Stop.
Fixes: b1992c3772e6 ("kbuild: use $(src) instead of $(srctree)/$(src) for source directory")
Reported-by: Rolf Eike Beer <[email protected]>
Signed-off-by: Nicolas Schier <[email protected]>
Tested-by: Rolf Eike Beer <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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When CONFIG_MODULES is disabled, 'make (bin)rpm-pkg' fails:
$ make allnoconfig binrpm-pkg
[ snip ]
error: File not found: .../linux/rpmbuild/BUILDROOT/kernel-6.10.0_rc3-1.i386/lib/modules/6.10.0-rc3/kernel
error: File not found: .../linux/rpmbuild/BUILDROOT/kernel-6.10.0_rc3-1.i386/lib/modules/6.10.0-rc3/modules.order
To make it work irrespective of CONFIG_MODULES, this commit specifies
the directory path, /lib/modules/%{KERNELRELEASE}, instead of individual
files.
However, doing so would cause new warnings:
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.alias
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.alias.bin
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.builtin.alias.bin
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.builtin.bin
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.dep
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.dep.bin
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.devname
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.softdep
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.symbols
warning: File listed twice: /lib/modules/6.10.0-rc3-dirty/modules.symbols.bin
These files exist in /lib/modules/%{KERNELRELEASE} and are also explicitly
marked as %ghost.
Suppress depmod because depmod-generated files are not packaged.
Fixes: 615b3a3d2d41 ("kbuild: rpm-pkg: do not include depmod-generated files")
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
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The make deb-pkg target calls debian-orig which attempts to either
hard link the source .tar to the build-output location or copy the
source .tar to the build-output location. The test to determine
whether to ln or cp is incorrectly expanded by Make and consequently
always attempts to ln the source .tar. This fix corrects the escaping
of '$' so that the test is expanded by the shell rather than by Make
and appropriately selects between ln and cp.
Fixes: b44aa8c96e9e ("kbuild: deb-pkg: make .orig tarball a hard link if possible")
Signed-off-by: Thayne Harbaugh <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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The compiled dtb files aren't executable, so install them with 0644 as their
permission mode, instead of defaulting to 0755 for the permission mode and
installing them with the executable bits set.
Some Linux distributions, including Debian, [1][2][3] already include fixes
in their kernel package build recipes to change the dtb file permissions to
0644 in their kernel packages. These changes, when additionally propagated
into the long-term kernel versions, will allow such distributions to remove
their downstream fixes.
[1] https://salsa.debian.org/kernel-team/linux/-/merge_requests/642
[2] https://salsa.debian.org/kernel-team/linux/-/merge_requests/749
[3] https://salsa.debian.org/kernel-team/linux/-/blob/debian/6.8.12-1/debian/rules.real#L193
Cc: Diederik de Haas <[email protected]>
Cc: <[email protected]>
Fixes: aefd80307a05 ("kbuild: refactor Makefile.dtbinst more")
Signed-off-by: Dragan Simic <[email protected]>
Reviewed-by: Nicolas Schier <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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Some instructions are only available on the 64-bit architecture.
Bi-arch compilers that default to -m32 need the explicit -m64 option
to evaluate them properly.
Fixes: 18e66b695e78 ("x86/shstk: Add Kconfig option for shadow stack")
Closes: https://lore.kernel.org/all/[email protected]/
Reported-by: Dmitry Safonov <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
Signed-off-by: Borislav Petkov (AMD) <[email protected]>
Tested-by: Dmitry Safonov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild fixes from Masahiro Yamada:
- Fix the initial state of the save button in 'make gconfig'
- Improve the Kconfig documentation
- Fix a Kconfig bug regarding property visibility
- Fix build breakage for systems where 'sed' is not installed in /bin
- Fix a false warning about missing MODULE_DESCRIPTION()
* tag 'kbuild-fixes-v6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
modpost: do not warn about missing MODULE_DESCRIPTION() for vmlinux.o
kbuild: explicitly run mksysmap as sed script from link-vmlinux.sh
kconfig: remove wrong expr_trans_bool()
kconfig: doc: document behavior of 'select' and 'imply' followed by 'if'
kconfig: doc: fix a typo in the note about 'imply'
kconfig: gconf: give a proper initial state to the Save button
kconfig: remove unneeded code for user-supplied values being out of range
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Building with W=1 incorrectly emits the following warning:
WARNING: modpost: missing MODULE_DESCRIPTION() in vmlinux.o
This check should apply only to modules.
Fixes: 1fffe7a34c89 ("script: modpost: emit a warning when the description is missing")
Signed-off-by: Masahiro Yamada <[email protected]>
Reviewed-by: Vincenzo Palazzo <[email protected]>
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In commit b18b047002b7 ("kbuild: change scripts/mksysmap into sed
script"), the mksysmap script was transformed into a sed script,
made directly executable with "#!/bin/sed -f". Apparently, the path to
sed is different on NixOS.
The shebang can't use the env command, otherwise the "sed -f" command
would be treated as a single argument. This can be solved with the -S
flag, but that is a GNU extension. Explicitly use sed instead of relying
on the executable shebang to fix NixOS builds without breaking build
environments using Busybox.
Fixes: b18b047002b7 ("kbuild: change scripts/mksysmap into sed script")
Reported-by: Kent Overstreet <[email protected]>
Signed-off-by: Richard Acayan <[email protected]>
Reviewed-by: Nathan Chancellor <[email protected]>
Tested-by: Dmitry Safonov <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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expr_trans_bool() performs an incorrect transformation.
[Test Code]
config MODULES
def_bool y
modules
config A
def_bool y
select C if B != n
config B
def_tristate m
config C
tristate
[Result]
CONFIG_MODULES=y
CONFIG_A=y
CONFIG_B=m
CONFIG_C=m
This output is incorrect because CONFIG_C=y is expected.
Documentation/kbuild/kconfig-language.rst clearly explains the function
of the '!=' operator:
If the values of both symbols are equal, it returns 'n',
otherwise 'y'.
Therefore, the statement:
select C if B != n
should be equivalent to:
select C if y
Or, more simply:
select C
Hence, the symbol C should be selected by the value of A, which is 'y'.
However, expr_trans_bool() wrongly transforms it to:
select C if B
Therefore, the symbol C is selected by (A && B), which is 'm'.
The comment block of expr_trans_bool() correctly explains its intention:
* bool FOO!=n => FOO
^^^^
If FOO is bool, FOO!=n can be simplified into FOO. This is correct.
However, the actual code performs this transformation when FOO is
tristate:
if (e->left.sym->type == S_TRISTATE) {
^^^^^^^^^^
While it can be fixed to S_BOOLEAN, there is no point in doing so
because expr_tranform() already transforms FOO!=n to FOO when FOO is
bool. (see the "case E_UNEQUAL" part)
expr_trans_bool() is wrong and unnecessary.
Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Randy Dunlap <[email protected]>
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Currently, the initial state of the "Save" button is always active.
If none of the CONFIG options are changed while loading the .config
file, the "Save" button should be greyed out.
This can be fixed by calling conf_read() after widget initialization.
Signed-off-by: Masahiro Yamada <[email protected]>
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This is a leftover from commit ce1fc9345a59 ("kconfig: do not clear
SYMBOL_DEF_USER when the value is out of range").
This code is now redundant because if a user-supplied value is out
of range, the value adjusted by sym_validate_range() differs, and
conf_unsaved has already been incremented a few lines above.
Signed-off-by: Masahiro Yamada <[email protected]>
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For ${atomic}_sub_and_test() the @i parameter is the value to subtract,
not add. Fix the typo in the kerneldoc template and generate the headers
with this update.
Fixes: ad8110706f38 ("locking/atomic: scripts: generate kerneldoc comments")
Suggested-by: Mark Rutland <[email protected]>
Signed-off-by: Carlos Llamas <[email protected]>
Signed-off-by: Peter Zijlstra (Intel) <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Reviewed-by: Kees Cook <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
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The 'dt_binding_check' target shouldn't depend on the kernel
configuration, but it has since commit 604a57ba9781 ("dt-bindings:
kbuild: Add separate target/dependency for processed-schema.json").
That is because CHECK_DT_BINDING make variable was dropped, but
scripts/dtc/Makefile was missed. The CHECK_DTBS variable can be used
instead.
Reported-by: Francesco Dolcini <[email protected]>
Fixes: 604a57ba9781 ("dt-bindings: kbuild: Add separate target/dependency for processed-schema.json")
Signed-off-by: "Rob Herring (Arm)" <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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According to the FIT image source file format document found in U-boot [1]
and the split-out FIT image specification [2], under "'/images' node" ->
"Conditionally mandatory property", the "compatible" property is described
as "compatible method for loading image", i.e., not the compatible string
embedded in the FDT or used for matching.
Drop the compatible string from the fdt image entry node.
While at it also fix up a typo in the document section of output_dtb.
[1] U-boot source "doc/usage/fit/source_file_format.rst", or on the website:
https://docs.u-boot.org/en/latest/usage/fit/source_file_format.html
[2] https://github.com/open-source-firmware/flat-image-tree/blob/main/source/chapter2-source-file-format.rst
Fixes: 7a23b027ec17 ("arm64: boot: Support Flat Image Tree")
Signed-off-by: Chen-Yu Tsai <[email protected]>
Reviewed-by: Simon Glass <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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Remove the left-over of commit 51eb95e2da41 ("kbuild: Don't remove
link-vmlinux temporary files on exit/signal").
Signed-off-by: Masahiro Yamada <[email protected]>
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In convention, short logs print the output file, not the input file.
Let's change the suffix for 'AS' since it assembles *.S into *.o.
[Before]
LD .tmp_vmlinux.kallsyms1
NM .tmp_vmlinux.kallsyms1.syms
KSYMS .tmp_vmlinux.kallsyms1.S
AS .tmp_vmlinux.kallsyms1.S
LD .tmp_vmlinux.kallsyms2
NM .tmp_vmlinux.kallsyms2.syms
KSYMS .tmp_vmlinux.kallsyms2.S
AS .tmp_vmlinux.kallsyms2.S
LD vmlinux
[After]
LD .tmp_vmlinux.kallsyms1
NM .tmp_vmlinux.kallsyms1.syms
KSYMS .tmp_vmlinux.kallsyms1.S
AS .tmp_vmlinux.kallsyms1.o
LD .tmp_vmlinux.kallsyms2
NM .tmp_vmlinux.kallsyms2.syms
KSYMS .tmp_vmlinux.kallsyms2.S
AS .tmp_vmlinux.kallsyms2.o
LD vmlinux
Signed-off-by: Masahiro Yamada <[email protected]>
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The previous commit removed the subshell execution from scripts/mksysmap,
which is now simple enough to become a sed script.
Signed-off-by: Masahiro Yamada <[email protected]>
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Since commit 951bcae6c5a0 ("kallsyms: Avoid weak references for kallsyms
symbols"), the kallsyms step 3 always occurs.
You can compare the build logs.
[Before 951bcae6c5a0]
$ git checkout 951bcae6c5a0^
$ make defconfig all
[ snip ]
LD .tmp_vmlinux.kallsyms1
NM .tmp_vmlinux.kallsyms1.syms
KSYMS .tmp_vmlinux.kallsyms1.S
AS .tmp_vmlinux.kallsyms1.S
LD .tmp_vmlinux.kallsyms2
NM .tmp_vmlinux.kallsyms2.syms
KSYMS .tmp_vmlinux.kallsyms2.S
AS .tmp_vmlinux.kallsyms2.S
LD vmlinux
[After 951bcae6c5a0]
$ git checkout 951bcae6c5a0
$ make defconfig all
[ snip ]
LD .tmp_vmlinux.kallsyms1
NM .tmp_vmlinux.kallsyms1.syms
KSYMS .tmp_vmlinux.kallsyms1.S
AS .tmp_vmlinux.kallsyms1.S
LD .tmp_vmlinux.kallsyms2
NM .tmp_vmlinux.kallsyms2.syms
KSYMS .tmp_vmlinux.kallsyms2.S
AS .tmp_vmlinux.kallsyms2.S
LD .tmp_vmlinux.kallsyms3 # should not happen
NM .tmp_vmlinux.kallsyms3.syms # should not happen
KSYMS .tmp_vmlinux.kallsyms3.S # should not happen
AS .tmp_vmlinux.kallsyms3.S # should not happen
LD vmlinux
The resulting vmlinux is correct, but it always requires an additional
linking step.
The symbols produced by kallsyms are excluded from kallsyms itself
because they were previously missing in step 1. With those symbols
excluded, the symbol lists matched between step 1 and step 2,
eliminating the need for step 3. Now, this has a negative effect.
Since 951bcae6c5a0, the PROVIDE() directives provide the fallback
definitions, which are not trimmed from the sysbol list in step 1
because ${kallsymso_prev} is empty at this point.
In step 2, ${kallsymso_prev} is set, and the kallsyms_* symbols are
trimmed from the symbol list.
Due to the table size difference between step 1 and step 2 (the former
is larger due to the presence of kallsyms_*), step 3 is triggered.
Now that the kallsyms_* symbols are always linked, let's stop omitting
them from kallsyms. This avoids unnecessary step 3.
Fixes: 951bcae6c5a0 ("kallsyms: Avoid weak references for kallsyms symbols")
Signed-off-by: Masahiro Yamada <[email protected]>
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Recently we went through the source tree and replaced
$(srctree)/$(src) w/ $(src). However, the gdb scripts Makefile had a
hidden $(srctree)/$(src) that looked like this:
$(abspath $(srctree))/$(src)
Because we missed that then my installed kernel had symlinks that
looked like this:
__init__.py ->
${INSTALL_DIR}/$(INSTALL_DIR}/scripts/gdb/linux/__init__.py
Let's also replace the midden $(abspath $(srctree))/$(src) with
$(src). Now:
__init__.py ->
$(INSTALL_DIR}/scripts/gdb/linux/__init__.py
Fixes: b1992c3772e6 ("kbuild: use $(src) instead of $(srctree)/$(src) for source directory")
Signed-off-by: Douglas Anderson <[email protected]>
Signed-off-by: Masahiro Yamada <[email protected]>
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The check for 'sym1 == sym2' is redundant here because it has already
been done a few lines above:
if (sym1 != sym2)
return NULL;
Signed-off-by: Masahiro Yamada <[email protected]>
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Currently, comparisons to 'm' or 'n' result in incorrect output.
[Test Code]
config MODULES
def_bool y
modules
config A
def_tristate m
config B
def_bool A > n
CONFIG_B is unset, while CONFIG_B=y is expected.
The reason for the issue is because Kconfig compares the tristate values
as strings.
Currently, the .type fields in the constant symbol definitions,
symbol_{yes,mod,no} are unspecified, i.e., S_UNKNOWN.
When expr_calc_value() evaluates 'A > n', it checks the types of 'A' and
'n' to determine how to compare them.
The left-hand side, 'A', is a tristate symbol with a value of 'm', which
corresponds to a numeric value of 1. (Internally, 'y', 'm', and 'n' are
represented as 2, 1, and 0, respectively.)
The right-hand side, 'n', has an unknown type, so it is treated as the
string "n" during the comparison.
expr_calc_value() compares two values numerically only when both can
have numeric values. Otherwise, they are compared as strings.
symbol numeric value ASCII code
-------------------------------------
y 2 0x79
m 1 0x6d
n 0 0x6e
'm' is greater than 'n' if compared numerically (since 1 is greater
than 0), but smaller than 'n' if compared as strings (since the ASCII
code 0x6d is smaller than 0x6e).
Specifying .type=S_TRISTATE for symbol_{yes,mod,no} fixes the above
test code.
Doing so, however, would cause a regression to the following test code.
[Test Code 2]
config MODULES
def_bool n
modules
config A
def_tristate n
config B
def_bool A = m
You would get CONFIG_B=y, while CONFIG_B should not be set.
The reason is because sym_get_string_value() turns 'm' into 'n' when the
module feature is disabled. Consequently, expr_calc_value() evaluates
'A = n' instead of 'A = m'. This oddity has been hidden because the type
of 'm' was previously S_UNKNOWN instead of S_TRISTATE.
sym_get_string_value() should not tweak the string because the tristate
value has already been correctly calculated. There is no reason to
return the string "n" where its tristate value is mod.
Fixes: 31847b67bec0 ("kconfig: allow use of relations other than (in)equality")
Signed-off-by: Masahiro Yamada <[email protected]>
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This has not been used since commit e911503085ae ("Kconfig: Remove
bad inference rules expr_eliminate_dups2()").
Signed-off-by: Masahiro Yamada <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull more non-mm updates from Andrew Morton:
- A series ("kbuild: enable more warnings by default") from Arnd
Bergmann which enables a number of additional build-time warnings. We
fixed all the fallout which we could find, there may still be a few
stragglers.
- Samuel Holland has developed the series "Unified cross-architecture
kernel-mode FPU API". This does a lot of consolidation of
per-architecture kernel-mode FPU usage and enables the use of newer
AMD GPUs on RISC-V.
- Tao Su has fixed some selftests build warnings in the series
"Selftests: Fix compilation warnings due to missing _GNU_SOURCE
definition".
- This pull also includes a nilfs2 fixup from Ryusuke Konishi.
* tag 'mm-nonmm-stable-2024-05-22-17-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (23 commits)
nilfs2: make block erasure safe in nilfs_finish_roll_forward()
selftests/harness: use 1024 in place of LINE_MAX
Revert "selftests/harness: remove use of LINE_MAX"
selftests/fpu: allow building on other architectures
selftests/fpu: move FP code to a separate translation unit
drm/amd/display: use ARCH_HAS_KERNEL_FPU_SUPPORT
drm/amd/display: only use hard-float, not altivec on powerpc
riscv: add support for kernel-mode FPU
x86: implement ARCH_HAS_KERNEL_FPU_SUPPORT
powerpc: implement ARCH_HAS_KERNEL_FPU_SUPPORT
LoongArch: implement ARCH_HAS_KERNEL_FPU_SUPPORT
lib/raid6: use CC_FLAGS_FPU for NEON CFLAGS
arm64: crypto: use CC_FLAGS_FPU for NEON CFLAGS
arm64: implement ARCH_HAS_KERNEL_FPU_SUPPORT
ARM: crypto: use CC_FLAGS_FPU for NEON CFLAGS
ARM: implement ARCH_HAS_KERNEL_FPU_SUPPORT
arch: add ARCH_HAS_KERNEL_FPU_SUPPORT
x86/fpu: fix asm/fpu/types.h include guard
kbuild: enable -Wcast-function-type-strict unconditionally
kbuild: enable -Wformat-truncation on clang
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc and other driver subsystem updates from Greg KH:
"Here is the big set of char/misc and other driver subsystem updates
for 6.10-rc1. Nothing major here, just lots of new drivers and updates
for apis and new hardware types. Included in here are:
- big IIO driver updates with more devices and drivers added
- fpga driver updates
- hyper-v driver updates
- uio_pruss driver removal, no one uses it, other drivers control the
same hardware now
- binder minor updates
- mhi driver updates
- excon driver updates
- counter driver updates
- accessability driver updates
- coresight driver updates
- other hwtracing driver updates
- nvmem driver updates
- slimbus driver updates
- spmi driver updates
- other smaller misc and char driver updates
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-6.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (319 commits)
misc: ntsync: mark driver as "broken" to prevent from building
spmi: pmic-arb: Add multi bus support
spmi: pmic-arb: Register controller for bus instead of arbiter
spmi: pmic-arb: Make core resources acquiring a version operation
spmi: pmic-arb: Make the APID init a version operation
spmi: pmic-arb: Fix some compile warnings about members not being described
dt-bindings: spmi: Deprecate qcom,bus-id
dt-bindings: spmi: Add X1E80100 SPMI PMIC ARB schema
spmi: pmic-arb: Replace three IS_ERR() calls by null pointer checks in spmi_pmic_arb_probe()
spmi: hisi-spmi-controller: Do not override device identifier
dt-bindings: spmi: hisilicon,hisi-spmi-controller: clean up example
dt-bindings: spmi: hisilicon,hisi-spmi-controller: fix binding references
spmi: make spmi_bus_type const
extcon: adc-jack: Document missing struct members
extcon: realtek: Remove unused of_gpio.h
extcon: usbc-cros-ec: Convert to platform remove callback returning void
extcon: usb-gpio: Convert to platform remove callback returning void
extcon: max77843: Convert to platform remove callback returning void
extcon: max3355: Convert to platform remove callback returning void
extcon: intel-mrfld: Convert to platform remove callback returning void
...
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git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"Fix-ups:
- FB Backlight interaction overhaul
- Remove superfluous code and simplify overall
- Constify various structs and struct attributes
Bug Fixes:
- Repair LED flickering
- Fix signedness bugs"
* tag 'backlight-next-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight: (42 commits)
backlight: sky81452-backlight: Remove unnecessary call to of_node_get()
backlight: mp3309c: Fix LEDs flickering in PWM mode
backlight: otm3225a: Drop driver owner assignment
backlight: lp8788: Drop support for platform data
backlight: lcd: Make lcd_class constant
backlight: Make backlight_class constant
backlight: mp3309c: Fix signedness bug in mp3309c_parse_fwnode()
const_structs.checkpatch: add lcd_ops
fbdev: omap: lcd_ams_delta: Constify lcd_ops
fbdev: imx: Constify lcd_ops
fbdev: clps711x: Constify lcd_ops
HID: picoLCD: Constify lcd_ops
backlight: tdo24m: Constify lcd_ops
backlight: platform_lcd: Constify lcd_ops
backlight: otm3225a: Constify lcd_ops
backlight: ltv350qv: Constify lcd_ops
backlight: lms501kf03: Constify lcd_ops
backlight: lms283gf05: Constify lcd_ops
backlight: l4f00242t03: Constify lcd_ops
backlight: jornada720_lcd: Constify lcd_ops
...
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V updates from Palmer Dabbelt:
- Add byte/half-word compare-and-exchange, emulated via LR/SC loops
- Support for Rust
- Support for Zihintpause in hwprobe
- Add PR_RISCV_SET_ICACHE_FLUSH_CTX prctl()
- Support lockless lockrefs
* tag 'riscv-for-linus-6.10-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: (42 commits)
riscv: defconfig: Enable CONFIG_CLK_SOPHGO_CV1800
riscv: select ARCH_HAS_FAST_MULTIPLIER
riscv: mm: still create swiotlb buffer for kmalloc() bouncing if required
riscv: Annotate pgtable_l{4,5}_enabled with __ro_after_init
riscv: Remove redundant CONFIG_64BIT from pgtable_l{4,5}_enabled
riscv: mm: Always use an ASID to flush mm contexts
riscv: mm: Preserve global TLB entries when switching contexts
riscv: mm: Make asid_bits a local variable
riscv: mm: Use a fixed layout for the MM context ID
riscv: mm: Introduce cntx2asid/cntx2version helper macros
riscv: Avoid TLB flush loops when affected by SiFive CIP-1200
riscv: Apply SiFive CIP-1200 workaround to single-ASID sfence.vma
riscv: mm: Combine the SMP and UP TLB flush code
riscv: Only send remote fences when some other CPU is online
riscv: mm: Broadcast kernel TLB flushes only when needed
riscv: Use IPIs for remote cache/TLB flushes by default
riscv: Factor out page table TLB synchronization
riscv: Flush the instruction cache during SMP bringup
riscv: hwprobe: export Zihintpause ISA extension
riscv: misaligned: remove CONFIG_RISCV_M_MODE specific code
...
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git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
Pull LoongArch updates from Huacai Chen:
- Select some options in Kconfig
- Give a chance to build with !CONFIG_SMP
- Switch to use built-in rustc target
- Add new supported device nodes to dts
- Some bug fixes and other small changes
- Update the default config file
* tag 'loongarch-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson:
LoongArch: Update Loongson-3 default config file
LoongArch: dts: Add new supported device nodes to Loongson-2K2000
LoongArch: dts: Add new supported device nodes to Loongson-2K0500
LoongArch: dts: Remove "disabled" state of clock controller node
LoongArch: rust: Switch to use built-in rustc target
LoongArch: Fix callchain parse error with kernel tracepoint events again
LoongArch: Give a chance to build with !CONFIG_SMP
LoongArch: Select THP_SWAP if HAVE_ARCH_TRANSPARENT_HUGEPAGE
LoongArch: Select ARCH_WANT_DEFAULT_BPF_JIT
LoongArch: Select ARCH_SUPPORTS_INT128 if CC_HAS_INT128
LoongArch: Select ARCH_HAS_FAST_MULTIPLIER
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull more s390 updates from Alexander Gordeev:
- Switch read and write software bits for PUDs
- Add missing hardware bits for PUDs and PMDs
- Generate unwind information for C modules to fix GDB unwind error for
vDSO functions
- Create .build-id links for unstripped vDSO files to enable vDSO
debugging with symbols
- Use standard stack frame layout for vDSO generated stack frames to
manually walk stack frames without DWARF information
- Rework perf_callchain_user() and arch_stack_walk_user() functions to
reduce code duplication
- Skip first stack frame when walking user stack
- Add basic checks to identify invalid instruction pointers when
walking stack frames
- Introduce and use struct stack_frame_vdso_wrapper within vDSO user
wrapper code to automatically generate an asm-offset define. Also use
STACK_FRAME_USER_OVERHEAD instead of STACK_FRAME_OVERHEAD to document
that the code works with user space stack
- Clear the backchain of the extra stack frame added by the vDSO user
wrapper code. This allows the user stack walker to detect and skip
the non-standard stack frame. Without this an incorrect instruction
pointer would be added to stack traces.
- Rewrite psw_idle() function in C to ease maintenance and further
enhancements
- Remove get_vtimer() function and use get_cpu_timer() instead
- Mark psw variable in __load_psw_mask() as __unitialized to avoid
superfluous clearing of PSW
- Remove obsolete and superfluous comment about removed TIF_FPU flag
- Replace memzero_explicit() and kfree() with kfree_sensitive() to fix
warnings reported by Coccinelle
- Wipe sensitive data and all copies of protected- or secure-keys from
stack when an IOCTL fails
- Both do_airq_interrupt() and do_io_interrupt() functions set
CIF_NOHZ_DELAY flag. Move it in do_io_irq() to simplify the code
- Provide iucv_alloc_device() and iucv_release_device() helpers, which
can be used to deduplicate more or less identical IUCV device
allocation and release code in four different drivers
- Make use of iucv_alloc_device() and iucv_release_device() helpers to
get rid of quite some code and also remove a cast to an incompatible
function (clang W=1)
- There is no user of iucv_root outside of the core IUCV code left.
Therefore remove the EXPORT_SYMBOL
- __apply_alternatives() contains a runtime check which verifies that
the size of the to be patched code area is even. Convert this to a
compile time check
- Increase size of buffers for sending z/VM CP DIAGNOSE X'008' commands
from 128 to 240
- Do not accept z/VM CP DIAGNOSE X'008' commands longer than maximally
allowed
- Use correct defines IPL_BP_NVME_LEN and IPL_BP0_NVME_LEN instead of
IPL_BP_FCP_LEN and IPL_BP0_FCP_LEN ones to initialize NVMe reIPL
block on 'scp_data' sysfs attribute update
- Initialize the correct fields of the NVMe dump block, which were
confused with FCP fields
- Refactor macros for 'scp_data' (re-)IPL sysfs attribute to reduce
code duplication
- Introduce 'scp_data' sysfs attribute for dump IPL to allow tools such
as dumpconf passing additional kernel command line parameters to a
stand-alone dumper
- Rework the CPACF query functions to use the correct RRE or RRF
instruction formats and set instruction register fields correctly
- Instead of calling BUG() at runtime force a link error during compile
when a unsupported opcode is used with __cpacf_query() or
__cpacf_check_opcode() functions
- Fix a crash in ap_parse_bitmap_str() function on /sys/bus/ap/apmask
or /sys/bus/ap/aqmask sysfs file update with a relative mask value
- Fix "bindings complete" udev event which should be sent once all AP
devices have been bound to device drivers and again when unbind/bind
actions take place and all AP devices are bound again
- Facility list alt_stfle_fac_list is nowhere used in the decompressor,
therefore remove it there
- Remove custom kprobes insn slot allocator in favour of the standard
module_alloc() one, since kernel image and module areas are located
within 4GB
- Use kvcalloc() instead of kvmalloc_array() in zcrypt driver to avoid
calling memset() with a large byte count and get rid of the sparse
warning as result
* tag 's390-6.10-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits)
s390/zcrypt: Use kvcalloc() instead of kvmalloc_array()
s390/kprobes: Remove custom insn slot allocator
s390/boot: Remove alt_stfle_fac_list from decompressor
s390/ap: Fix bind complete udev event sent after each AP bus scan
s390/ap: Fix crash in AP internal function modify_bitmap()
s390/cpacf: Make use of invalid opcode produce a link error
s390/cpacf: Split and rework cpacf query functions
s390/ipl: Introduce sysfs attribute 'scp_data' for dump ipl
s390/ipl: Introduce macros for (re)ipl sysfs attribute 'scp_data'
s390/ipl: Fix incorrect initialization of nvme dump block
s390/ipl: Fix incorrect initialization of len fields in nvme reipl block
s390/ipl: Do not accept z/VM CP diag X'008' cmds longer than max length
s390/ipl: Fix size of vmcmd buffers for sending z/VM CP diag X'008' cmds
s390/alternatives: Convert runtime sanity check into compile time check
s390/iucv: Unexport iucv_root
tty: hvc-iucv: Make use of iucv_alloc_device()
s390/smsgiucv_app: Make use of iucv_alloc_device()
s390/netiucv: Make use of iucv_alloc_device()
s390/vmlogrdr: Make use of iucv_alloc_device()
s390/iucv: Provide iucv_alloc_device() / iucv_release_device()
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu update from Greg Ungerer:
. remove use of kernel config option from uapi header
* tag 'm68knommu-for-v6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: Avoid CONFIG_COLDFIRE switch in uapi header
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git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux
Pull coccinelle updates from Julia Lawall:
"One patch slightly improves the text in a comment.
The other patch (on minmax.cocci) removes a report about ? being used
in return statements that has been generating not very useful
suggestions to change idiomatic code"
* tag 'cocci-for-6.10' of git://git.kernel.org/pub/scm/linux/kernel/git/jlawall/linux:
Coccinelle: pm_runtime: Fix grammar in comment
coccinelle: misc: minmax: Suppress reports for err returns
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