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| H A D | Makefile | diff 2cc14f52 Sun Nov 26 20:59:33 MST 2023 Linus Torvalds <torvalds@linux-foundation.org> Linux 6.7-rc3 diff 6d796c50 Sun Jan 29 14:59:43 MST 2023 Linus Torvalds <torvalds@linux-foundation.org> Linux 6.2-rc6 diff dcad240c Mon Nov 14 13:59:39 MST 2022 Andrew Davis <afd@ti.com> kbuild: Cleanup DT Overlay intermediate files as appropriate %.dtbo.o and %.dtbo.S files are used to build-in DT Overlay. They should should not be removed by Make or the kernel will be needlessly rebuilt. These should be removed by "clean" and ignored by git like other intermediate files. Reported-by: Andy Shevchenko <andriy.shevchenko@intel.com> Signed-off-by: Andrew Davis <afd@ti.com> Fixes: 941214a512d8 ("kbuild: Allow DTB overlays to built into .dtbo.S files") Tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Masahiro Yamada <masahiroy@kernel.org> Link: https://lore.kernel.org/r/20221114205939.27994-1-afd@ti.com Signed-off-by: Rob Herring <robh@kernel.org> diff 9beccca0 Thu Oct 27 09:59:07 MDT 2022 Ard Biesheuvel <ardb@kernel.org> scs: add support for dynamic shadow call stacks In order to allow arches to use code patching to conditionally emit the shadow stack pushes and pops, rather than always taking the performance hit even on CPUs that implement alternatives such as stack pointer authentication on arm64, add a Kconfig symbol that can be set by the arch to omit the SCS codegen itself, without otherwise affecting how support code for SCS and compiler options (for register reservation, for instance) are emitted. Also, add a static key and some plumbing to omit the allocation of shadow call stack for dynamic SCS configurations if SCS is disabled at runtime. Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Tested-by: Sami Tolvanen <samitolvanen@google.com> Link: https://lore.kernel.org/r/20221027155908.1940624-3-ardb@kernel.org Signed-off-by: Will Deacon <will@kernel.org> diff ee476203 Sun Jul 24 03:59:19 MDT 2022 Masahiro Yamada <masahiroy@kernel.org> kbuild: add dtbs_prepare target Factor out the common prerequisites for DT compilation into the new target, dtbs_prepare. Add comments to explain why include/config/kernel.release is the prerequisite. Our policy is that installation targets must not rebuild anything in the tree. If 'make modules_install' is executed as root, include/config/kernel.release may be owned by root. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> diff b7b98f86 Mon Nov 01 20:59:45 MDT 2021 Jakub Kicinski <kuba@kernel.org> Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next Alexei Starovoitov says: ==================== pull-request: bpf-next 2021-11-01 We've added 181 non-merge commits during the last 28 day(s) which contain a total of 280 files changed, 11791 insertions(+), 5879 deletions(-). The main changes are: 1) Fix bpf verifier propagation of 64-bit bounds, from Alexei. 2) Parallelize bpf test_progs, from Yucong and Andrii. 3) Deprecate various libbpf apis including af_xdp, from Andrii, Hengqi, Magnus. 4) Improve bpf selftests on s390, from Ilya. 5) bloomfilter bpf map type, from Joanne. 6) Big improvements to JIT tests especially on Mips, from Johan. 7) Support kernel module function calls from bpf, from Kumar. 8) Support typeless and weak ksym in light skeleton, from Kumar. 9) Disallow unprivileged bpf by default, from Pawan. 10) BTF_KIND_DECL_TAG support, from Yonghong. 11) Various bpftool cleanups, from Quentin. * https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next: (181 commits) libbpf: Deprecate AF_XDP support kbuild: Unify options for BTF generation for vmlinux and modules selftests/bpf: Add a testcase for 64-bit bounds propagation issue. bpf: Fix propagation of signed bounds from 64-bit min/max into 32-bit. bpf: Fix propagation of bounds from 64-bit min/max into 32-bit and var_off. selftests/bpf: Fix also no-alu32 strobemeta selftest bpf: Add missing map_delete_elem method to bloom filter map selftests/bpf: Add bloom map success test for userspace calls bpf: Add alignment padding for "map_extra" + consolidate holes bpf: Bloom filter map naming fixups selftests/bpf: Add test cases for struct_ops prog bpf: Add dummy BPF STRUCT_OPS for test purpose bpf: Factor out helpers for ctx access checking bpf: Factor out a helper to prepare trampoline for struct_ops prog selftests, bpf: Fix broken riscv build riscv, libbpf: Add RISC-V (RV64) support to bpf_tracing.h tools, build: Add RISC-V to HOSTARCH parsing riscv, bpf: Increase the maximum number of iterations selftests, bpf: Add one test for sockmap with strparser selftests, bpf: Fix test_txmsg_ingress_parser error ... ==================== Link: https://lore.kernel.org/r/20211102013123.9005-1-alexei.starovoitov@gmail.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> diff 64570fbc Sun Oct 10 18:01:59 MDT 2021 Linus Torvalds <torvalds@linux-foundation.org> Linux 5.15-rc5 diff cf536e18 Thu May 06 01:34:59 MDT 2021 Feng Tang <feng.tang@intel.com> Makefile: extend 32B aligned debug option to 64B aligned Commit 09c60546f04f ("./Makefile: add debug option to enable function aligned on 32 bytes") was introduced to help debugging strange kernel performance changes caused by code alignment change. Recently we found 2 similar cases [1][2] caused by code-alignment changes, which can only be identified by forcing 64 bytes aligned for all functions. Originally, 32 bytes was used mainly for not wasting too much text space, but this option is only for debug anyway where text space is not a big concern. So extend the alignment to 64 bytes to cover more similar cases. [1].https://lore.kernel.org/lkml/20210427090013.GG32408@xsang-OptiPlex-9020/ [2].https://lore.kernel.org/lkml/20210420030837.GB31773@xsang-OptiPlex-9020/ Signed-off-by: Feng Tang <feng.tang@intel.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> diff eec08090 Tue Mar 09 13:59:15 MST 2021 Nathan Chancellor <nathan@kernel.org> Makefile: Only specify '--prefix=' when building with clang + GNU as When building with LLVM_IAS=1, there is no point to specifying '--prefix=' because that flag is only used to find GNU cross tools, which will not be used indirectly when using the integrated assembler. All of the tools are invoked directly from PATH or a full path specified via the command line, which does not depend on the value of '--prefix='. Sharing commands to reproduce issues becomes a little bit easier without a '--prefix=' value because that '--prefix=' value is specific to a user's machine due to it being an absolute path. Some further notes from Fangrui Song: clang can spawn GNU as (if -f?no-integrated-as is specified) and GNU objcopy (-f?no-integrated-as and -gsplit-dwarf and -g[123]). objcopy is only used for GNU as assembled object files. With integrated assembler, the object file streamer creates .o and .dwo simultaneously. With GNU as, two objcopy commands are needed to extract .debug*.dwo to .dwo files && another command to remove .debug*.dwo sections. A small consequence of this change (to keep things simple) is that '--prefix=' will always be specified now, even with a native build, when it was not before. This should not be an issue due to the way that the Makefile searches for the prefix (based on elfedit's location). This ends up improving the experience for host builds because PATH is better respected and matches GCC's behavior more closely. See the below thread for more details: https://lore.kernel.org/r/20210205213651.GA16907@Ryzen-5-4500U.localdomain/ Signed-off-by: Nathan Chancellor <nathan@kernel.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> diff c91d4e47 Tue Mar 09 13:59:14 MST 2021 Nathan Chancellor <nathan@kernel.org> Makefile: Remove '--gcc-toolchain' flag This flag was originally added to allow clang to find the GNU cross tools in commit 785f11aa595b ("kbuild: Add better clang cross build support"). This flag was not enough to find the tools at times so '--prefix' was added to the list in commit ef8c4ed9db80 ("kbuild: allow to use GCC toolchain not in Clang search path") and improved upon in commit ca9b31f6bb9c ("Makefile: Fix GCC_TOOLCHAIN_DIR prefix for Clang cross compilation"). Now that '--prefix' specifies a full path and prefix, '--gcc-toolchain' serves no purpose because the kernel builds with '-nostdinc' and '-nostdlib'. This has been verified with self compiled LLVM 10.0.1 and LLVM 13.0.0 as well as a distribution version of LLVM 11.1.0 without binutils in the LLVM toolchain locations. Link: https://reviews.llvm.org/D97902 Signed-off-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Fangrui Song <maskray@google.com> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> |
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