summaryrefslogtreecommitdiffstats
path: root/scripts/Makefile.lib
Commit message (Collapse)AuthorAgeFilesLines
* arm64: boot: Support Flat Image TreeSimon Glass2024-04-121-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a script which produces a Flat Image Tree (FIT), a single file containing the built kernel and associated devicetree files. Compression defaults to gzip which gives a good balance of size and performance. The files compress from about 86MB to 24MB using this approach. The FIT can be used by bootloaders which support it, such as U-Boot and Linuxboot. It permits automatic selection of the correct devicetree, matching the compatible string of the running board with the closest compatible string in the FIT. There is no need for filenames or other workarounds. Add a 'make image.fit' build target for arm64, as well. The FIT can be examined using 'dumpimage -l'. This uses the 'dtbs-list' file but processes only .dtb files, ignoring the overlay .dtbo files. This features requires pylibfdt (use 'pip install libfdt'). It also requires compression utilities for the algorithm being used. Supported compression options are the same as the Image.xxx files. Use FIT_COMPRESSION to select an algorithm other than gzip. While FIT supports a ramdisk / initrd, no attempt is made to support this here, since it must be built separately from the Linux build. Signed-off-by: Simon Glass <sjg@chromium.org> Acked-by: Masahiro Yamada <masahiroy@kernel.org> Link: https://lore.kernel.org/r/20240329032836.141899-3-sjg@chromium.org Signed-off-by: Will Deacon <will@kernel.org>
* Merge tag 'kbuild-v6.9' of ↵Linus Torvalds2024-03-211-10/+16
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Generate a list of built DTB files (arch/*/boot/dts/dtbs-list) - Use more threads when building Debian packages in parallel - Fix warnings shown during the RPM kernel package uninstallation - Change OBJECT_FILES_NON_STANDARD_*.o etc. to take a relative path to Makefile - Support GCC's -fmin-function-alignment flag - Fix a null pointer dereference bug in modpost - Add the DTB support to the RPM package - Various fixes and cleanups in Kconfig * tag 'kbuild-v6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (67 commits) kconfig: tests: test dependency after shuffling choices kconfig: tests: add a test for randconfig with dependent choices kconfig: tests: support KCONFIG_SEED for the randconfig runner kbuild: rpm-pkg: add dtb files in kernel rpm kconfig: remove unneeded menu_is_visible() call in conf_write_defconfig() kconfig: check prompt for choice while parsing kconfig: lxdialog: remove unused dialog colors kconfig: lxdialog: fix button color for blackbg theme modpost: fix null pointer dereference kbuild: remove GCC's default -Wpacked-bitfield-compat flag kbuild: unexport abs_srctree and abs_objtree kbuild: Move -Wenum-{compare-conditional,enum-conversion} into W=1 kconfig: remove named choice support kconfig: use linked list in get_symbol_str() to iterate over menus kconfig: link menus to a symbol kbuild: fix inconsistent indentation in top Makefile kbuild: Use -fmin-function-alignment when available alpha: merge two entries for CONFIG_ALPHA_GAMMA alpha: merge two entries for CONFIG_ALPHA_EV4 kbuild: change DTC_FLAGS_<basetarget>.o to take the path relative to $(obj) ...
| * kbuild: change DTC_FLAGS_<basetarget>.o to take the path relative to $(obj)Masahiro Yamada2024-02-231-1/+1
| | | | | | | | | | | | | | | | For the same rationale as commit 54b8ae66ae1a ("kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)"). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
| * kbuild: change tool coverage variables to take the path relative to $(obj)Masahiro Yamada2024-02-231-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 54b8ae66ae1a ("kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)") changed the syntax of per-file compiler flags. The situation is the same for the following variables: OBJECT_FILES_NON_STANDARD_<basetarget>.o GCOV_PROFILE_<basetarget>.o KASAN_SANITIZE_<basetarget>.o KMSAN_SANITIZE_<basetarget>.o KMSAN_ENABLE_CHECKS_<basetarget>.o UBSAN_SANITIZE_<basetarget>.o KCOV_INSTRUMENT_<basetarget>.o KCSAN_SANITIZE_<basetarget>.o KCSAN_INSTRUMENT_BARRIERS_<basetarget>.o The <basetarget> is the filename of the target with its directory and suffix stripped. This syntax comes into a trouble when two files with the same basename appear in one Makefile, for example: obj-y += dir1/foo.o obj-y += dir2/foo.o OBJECT_FILES_NON_STANDARD_foo.o := y OBJECT_FILES_NON_STANDARD_foo.o is applied to both dir1/foo.o and dir2/foo.o. This syntax is not flexbile enough to handle cases where one of them is a standard object, but the other is not. It is more sensible to use the relative path to the Makefile, like this: obj-y += dir1/foo.o OBJECT_FILES_NON_STANDARD_dir1/foo.o := y obj-y += dir2/foo.o OBJECT_FILES_NON_STANDARD_dir2/foo.o := y To maintain the current behavior, I made adjustments to the following two Makefiles: - arch/x86/entry/vdso/Makefile, which compiles vclock_gettime.o, vgetcpu.o, and their vdso32 variants. - arch/x86/kvm/Makefile, which compiles vmx/vmenter.o and svm/vmenter.o Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu> Acked-by: Sean Christopherson <seanjc@google.com>
| * kbuild: create a list of all built DTB filesMasahiro Yamada2024-02-191-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is useful to have a list of all *.dtb and *.dtbo files generated from the current build. With this commit, 'make dtbs' creates arch/*/boot/dts/dtbs-list, which lists the dtb(o) files created in the current build. It maintains the order of the dtb-y additions in Makefiles although the order is not important for DTBs. It is a (good) side effect through the reuse of the modules.order rule. Please note this list only includes the files directly added to dtb-y. For example, consider this case: foo-dtbs := foo_base.dtb foo_overlay.dtbo dtb-y := foo.dtb In this example, the list will include foo.dtb, but not foo_base.dtb or foo_overlay.dtbo. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* | Merge tag 'hardening-v6.9-rc1' of ↵Linus Torvalds2024-03-121-1/+4
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux Pull hardening updates from Kees Cook: "As is pretty normal for this tree, there are changes all over the place, especially for small fixes, selftest improvements, and improved macro usability. Some header changes ended up landing via this tree as they depended on the string header cleanups. Also, a notable set of changes is the work for the reintroduction of the UBSAN signed integer overflow sanitizer so that we can continue to make improvements on the compiler side to make this sanitizer a more viable future security hardening option. Summary: - string.h and related header cleanups (Tanzir Hasan, Andy Shevchenko) - VMCI memcpy() usage and struct_size() cleanups (Vasiliy Kovalev, Harshit Mogalapalli) - selftests/powerpc: Fix load_unaligned_zeropad build failure (Michael Ellerman) - hardened Kconfig fragment updates (Marco Elver, Lukas Bulwahn) - Handle tail call optimization better in LKDTM (Douglas Anderson) - Use long form types in overflow.h (Andy Shevchenko) - Add flags param to string_get_size() (Andy Shevchenko) - Add Coccinelle script for potential struct_size() use (Jacob Keller) - Fix objtool corner case under KCFI (Josh Poimboeuf) - Drop 13 year old backward compat CAP_SYS_ADMIN check (Jingzi Meng) - Add str_plural() helper (Michal Wajdeczko, Kees Cook) - Ignore relocations in .notes section - Add comments to explain how __is_constexpr() works - Fix m68k stack alignment expectations in stackinit Kunit test - Convert string selftests to KUnit - Add KUnit tests for fortified string functions - Improve reporting during fortified string warnings - Allow non-type arg to type_max() and type_min() - Allow strscpy() to be called with only 2 arguments - Add binary mode to leaking_addresses scanner - Various small cleanups to leaking_addresses scanner - Adding wrapping_*() arithmetic helper - Annotate initial signed integer wrap-around in refcount_t - Add explicit UBSAN section to MAINTAINERS - Fix UBSAN self-test warnings - Simplify UBSAN build via removal of CONFIG_UBSAN_SANITIZE_ALL - Reintroduce UBSAN's signed overflow sanitizer" * tag 'hardening-v6.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (51 commits) selftests/powerpc: Fix load_unaligned_zeropad build failure string: Convert helpers selftest to KUnit string: Convert selftest to KUnit sh: Fix build with CONFIG_UBSAN=y compiler.h: Explain how __is_constexpr() works overflow: Allow non-type arg to type_max() and type_min() VMCI: Fix possible memcpy() run-time warning in vmci_datagram_invoke_guest_handler() lib/string_helpers: Add flags param to string_get_size() x86, relocs: Ignore relocations in .notes section objtool: Fix UNWIND_HINT_{SAVE,RESTORE} across basic blocks overflow: Use POD in check_shl_overflow() lib: stackinit: Adjust target string to 8 bytes for m68k sparc: vdso: Disable UBSAN instrumentation kernel.h: Move lib/cmdline.c prototypes to string.h leaking_addresses: Provide mechanism to scan binary files leaking_addresses: Ignore input device status lines leaking_addresses: Use File::Temp for /tmp files MAINTAINERS: Update LEAKING_ADDRESSES details fortify: Improve buffer overflow reporting fortify: Add KUnit tests for runtime overflows ...
| * | ubsan: Reintroduce signed overflow sanitizerKees Cook2024-02-201-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to mitigate unexpected signed wrap-around[1], bring back the signed integer overflow sanitizer. It was removed in commit 6aaa31aeb9cf ("ubsan: remove overflow checks") because it was effectively a no-op when combined with -fno-strict-overflow (which correctly changes signed overflow from being "undefined" to being explicitly "wrap around"). Compilers are adjusting their sanitizers to trap wrap-around and to detecting common code patterns that should not be instrumented (e.g. "var + offset < var"). Prepare for this and explicitly rename the option from "OVERFLOW" to "WRAP" to more accurately describe the behavior. To annotate intentional wrap-around arithmetic, the helpers wrapping_add/sub/mul_wrap() can be used for individual statements. At the function level, the __signed_wrap attribute can be used to mark an entire function as expecting its signed arithmetic to wrap around. For a single object file the Makefile can use "UBSAN_SIGNED_WRAP_target.o := n" to mark it as wrapping, and for an entire directory, "UBSAN_SIGNED_WRAP := n" can be used. Additionally keep these disabled under CONFIG_COMPILE_TEST for now. Link: https://github.com/KSPP/linux/issues/26 [1] Cc: Miguel Ojeda <ojeda@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Hao Luo <haoluo@google.com> Reviewed-by: Marco Elver <elver@google.com> Reviewed-by: Justin Stitt <justinstitt@google.com> Signed-off-by: Kees Cook <keescook@chromium.org>
| * | ubsan: Remove CONFIG_UBSAN_SANITIZE_ALLKees Cook2024-02-061-1/+1
| |/ | | | | | | | | | | | | | | | | | | | | | | | | For simplicity in splitting out UBSan options into separate rules, remove CONFIG_UBSAN_SANITIZE_ALL, effectively defaulting to "y", which is how it is generally used anyway. (There are no ":= y" cases beyond where a specific file is enabled when a top-level ":= n" is in effect.) Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Marco Elver <elver@google.com> Cc: linux-doc@vger.kernel.org Cc: linux-kbuild@vger.kernel.org Signed-off-by: Kees Cook <keescook@chromium.org>
* | Merge tag 'soc-dt-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/socLinus Torvalds2024-03-121-2/+1
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SoC device tree updates from Arnd Bergmann: "There is very little going on with new SoC support this time, all the new chips are variations of others that we already support, and they are all based on ARMv8 cores: - Mediatek MT7981B (Filogic 820) and MT7988A (Filogic 880) are networking SoCs designed to be used in wireless routers, similar to the already supported MT7986A (Filogic 830). - NXP i.MX8DXP is a variant of i.MX8QXP, with two CPU cores less. These are used in many embedded and industrial applications. - Renesas R8A779G2 (R-Car V4H ES2.0) and R8A779H0 (R-Car V4M) are automotive SoCs. - TI J722S is another automotive variant of its K3 family, related to the AM62 series. There are a total of 7 new arm32 machines and 45 arm64 ones, including - Two Android phones based on the old Tegra30 chip - Two machines using Cortex-A53 SoCs from Allwinner, a mini PC and a SoM development board - A set-top box using Amlogic Meson G12A S905X2 - Eight embedded board using NXP i.MX6/8/9 - Three machines using Mediatek network router chips - Ten Chromebooks, all based on Mediatek MT8186 - One development board based on Mediatek MT8395 (Genio 1200) - Seven tablets and phones based on Qualcomm SoCs, most of them from Samsung. - A third development board for Qualcomm SM8550 (Snapdragon 8 Gen 2) - Three variants of the "White Hawk" board for Renesas automotive SoCs - Ten Rockchips RK35xx based machines, including NAS, Tablet, Game console and industrial form factors. - Three evaluation boards for TI K3 based SoCs The other changes are mainly the usual feature additions for existing hardware, cleanups, and dtc compile time fixes. One notable change is the inclusion of PowerVR SGX GPU nodes on TI SoCs" * tag 'soc-dt-6.9' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (824 commits) riscv: dts: Move BUILTIN_DTB_SOURCE to common Kconfig riscv: dts: starfive: jh7100: fix root clock names ARM: dts: samsung: exynos4412: decrease memory to account for unusable region arm64: dts: qcom: sm8250-xiaomi-elish: set rotation arm64: dts: qcom: sm8650: Fix SPMI channels size arm64: dts: qcom: sm8550: Fix SPMI channels size arm64: dts: rockchip: Fix name for UART pin header on qnap-ts433 arm: dts: marvell: clearfog-gtr-l8: align port numbers with enclosure arm: dts: marvell: clearfog-gtr-l8: add support for second sfp connector dt-bindings: soc: renesas: renesas-soc: Add pattern for gray-hawk dtc: Enable dtc interrupt_provider check arm64: dts: st: add video encoder support to stm32mp255 arm64: dts: st: add video decoder support to stm32mp255 ARM: dts: stm32: enable crypto accelerator on stm32mp135f-dk ARM: dts: stm32: enable CRC on stm32mp135f-dk ARM: dts: stm32: add CRC on stm32mp131 ARM: dts: add stm32f769-disco-mb1166-reva09 ARM: dts: stm32: add display support on stm32f769-disco ARM: dts: stm32: rename mmc_vcard to vcc-3v3 on stm32f769-disco ARM: dts: stm32: add DSI support on stm32f769 ...
| * | dtc: Enable dtc interrupt_provider checkRob Herring2024-02-291-2/+1
| |/ | | | | | | | | | | | | | | | | | | Now that all the interrupt warnings have been fixed, enable 'interrupt_provider' check by default. This will also enable 'interrupt_map' check. Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20240213-arm-dt-cleanups-v1-6-f2dee1292525@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
* | Merge branch 'x86/bugs' into x86/core, to pick up pending changes before ↵Ingo Molnar2024-02-141-4/+4
|\ \ | |/ |/| | | | | | | | | | | | | dependent patches Merge in pending alternatives patching infrastructure changes, before applying more patches. Signed-off-by: Ingo Molnar <mingo@kernel.org>
| * x86/bugs: Rename CONFIG_RETHUNK => CONFIG_MITIGATION_RETHUNKBreno Leitao2024-01-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | Step 10/10 of the namespace unification of CPU mitigations related Kconfig options. [ mingo: Added one more case. ] Suggested-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20231121160740.1249350-11-leitao@debian.org
| * x86/bugs: Rename CONFIG_SLS => CONFIG_MITIGATION_SLSBreno Leitao2024-01-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | Step 6/10 of the namespace unification of CPU mitigations related Kconfig options. Suggested-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20231121160740.1249350-7-leitao@debian.org
| * x86/bugs: Rename CONFIG_RETPOLINE => CONFIG_MITIGATION_RETPOLINEBreno Leitao2024-01-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Step 5/10 of the namespace unification of CPU mitigations related Kconfig options. [ mingo: Converted a few more uses in comments/messages as well. ] Suggested-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Reviewed-by: Ariel Miculas <amiculas@cisco.com> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20231121160740.1249350-6-leitao@debian.org
| * x86/bugs: Rename CONFIG_CALL_DEPTH_TRACKING => ↵Breno Leitao2024-01-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | CONFIG_MITIGATION_CALL_DEPTH_TRACKING Step 3/10 of the namespace unification of CPU mitigations related Kconfig options. Suggested-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/r/20231121160740.1249350-4-leitao@debian.org
* | kbuild: determine base DTB by suffixMasahiro Yamada2023-12-101-2/+2
|/ | | | | | | | | | | | | | | | | | | | | | When using the -dtbs syntax, you need to list the base first, as follows: foo-dtbs := foo_base.dtb foo_overlay1.dtbo foo_overlay2.dtbo dtb-y := foo.dtb You cannot do this arrangement: foo-dtbs := foo_overlay1.dtbo foo_overlay2.dtbo foo_base.dtb This restriction comes from $(firstword ...) in the current implementation, but it is unneeded to rely on the order in the -dtbs syntax. Instead, you can simply determine the base by the suffix because the base (*.dtb) and overlays (*.dtbo) use different suffixes. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
* kbuild: Move the single quotes for image nameSimon Glass2023-11-171-2/+2
| | | | | | | | Add quotes where UIMAGE_NAME is used, rather than where it is defined. This allows the UIMAGE_NAME variable to be set by the user. Signed-off-by: Simon Glass <sjg@chromium.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* kbuild: Disallow DTB overlays to built from .dts named source filesAndrew Davis2023-05-221-3/+0
| | | | | | | | | | | | As a follow up to the series allowing DTB overlays to built from .dtso files. Now that all overlays have been renamed, remove the ability to build from overlays from .dts files to prevent any files with the old name from accidental being added. Signed-off-by: Andrew Davis <afd@ti.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Andy Shevchenko <andriy.shevchenko@intel.com> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
* kbuild: unify cmd_dt_S_dtb and cmd_dt_S_dtboMasahiro Yamada2023-01-221-30/+15
| | | | | | | | cmd_dt_S_dtb and cmd_dt_S_dtbo are almost the same; the only difference is the prefix of the begin/end symbols. (__dtb vs __dtbo) Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
* Merge tag 'powerpc-6.2-1' of ↵Linus Torvalds2022-12-191-0/+3
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: - Add powerpc qspinlock implementation optimised for large system scalability and paravirt. See the merge message for more details - Enable objtool to be built on powerpc to generate mcount locations - Use a temporary mm for code patching with the Radix MMU, so the writable mapping is restricted to the patching CPU - Add an option to build the 64-bit big-endian kernel with the ELFv2 ABI - Sanitise user registers on interrupt entry on 64-bit Book3S - Many other small features and fixes Thanks to Aboorva Devarajan, Angel Iglesias, Benjamin Gray, Bjorn Helgaas, Bo Liu, Chen Lifu, Christoph Hellwig, Christophe JAILLET, Christophe Leroy, Christopher M. Riedl, Colin Ian King, Deming Wang, Disha Goel, Dmitry Torokhov, Finn Thain, Geert Uytterhoeven, Gustavo A. R. Silva, Haowen Bai, Joel Stanley, Jordan Niethe, Julia Lawall, Kajol Jain, Laurent Dufour, Li zeming, Miaoqian Lin, Michael Jeanson, Nathan Lynch, Naveen N. Rao, Nayna Jain, Nicholas Miehlbradt, Nicholas Piggin, Pali Rohár, Randy Dunlap, Rohan McLure, Russell Currey, Sathvika Vasireddy, Shaomin Deng, Stephen Kitt, Stephen Rothwell, Thomas Weißschuh, Tiezhu Yang, Uwe Kleine-König, Xie Shaowen, Xiu Jianfeng, XueBing Chen, Yang Yingliang, Zhang Jiaming, ruanjinjie, Jessica Yu, and Wolfram Sang. * tag 'powerpc-6.2-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (181 commits) powerpc/code-patching: Fix oops with DEBUG_VM enabled powerpc/qspinlock: Fix 32-bit build powerpc/prom: Fix 32-bit build powerpc/rtas: mandate RTAS syscall filtering powerpc/rtas: define pr_fmt and convert printk call sites powerpc/rtas: clean up includes powerpc/rtas: clean up rtas_error_log_max initialization powerpc/pseries/eeh: use correct API for error log size powerpc/rtas: avoid scheduling in rtas_os_term() powerpc/rtas: avoid device tree lookups in rtas_os_term() powerpc/rtasd: use correct OF API for event scan rate powerpc/rtas: document rtas_call() powerpc/pseries: unregister VPA when hot unplugging a CPU powerpc/pseries: reset the RCU watchdogs after a LPM powerpc: Take in account addition CPU node when building kexec FDT powerpc: export the CPU node count powerpc/cpuidle: Set CPUIDLE_FLAG_POLLING for snooze state powerpc/dts/fsl: Fix pca954x i2c-mux node names cxl: Remove unnecessary cxl_pci_window_alignment() selftests/powerpc: Fix resource leaks ...
| * objtool: Add --mnop as an option to --mcountSathvika Vasireddy2022-11-181-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some architectures (powerpc) may not support ftrace locations being nop'ed out at build time. Introduce CONFIG_HAVE_OBJTOOL_NOP_MCOUNT for objtool, as a means for architectures to enable nop'ing of ftrace locations. Add --mnop as an option to objtool --mcount, to indicate support for the same. Also, make sure that --mnop can be passed as an option to objtool only when --mcount is passed. Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Sathvika Vasireddy <sv@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20221114175754.1131267-12-sv@linux.ibm.com
* | Merge tag 'x86_core_for_v6.2' of ↵Linus Torvalds2022-12-141-0/+3
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 core updates from Borislav Petkov: - Add the call depth tracking mitigation for Retbleed which has been long in the making. It is a lighterweight software-only fix for Skylake-based cores where enabling IBRS is a big hammer and causes a significant performance impact. What it basically does is, it aligns all kernel functions to 16 bytes boundary and adds a 16-byte padding before the function, objtool collects all functions' locations and when the mitigation gets applied, it patches a call accounting thunk which is used to track the call depth of the stack at any time. When that call depth reaches a magical, microarchitecture-specific value for the Return Stack Buffer, the code stuffs that RSB and avoids its underflow which could otherwise lead to the Intel variant of Retbleed. This software-only solution brings a lot of the lost performance back, as benchmarks suggest: https://lore.kernel.org/all/20220915111039.092790446@infradead.org/ That page above also contains a lot more detailed explanation of the whole mechanism - Implement a new control flow integrity scheme called FineIBT which is based on the software kCFI implementation and uses hardware IBT support where present to annotate and track indirect branches using a hash to validate them - Other misc fixes and cleanups * tag 'x86_core_for_v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (80 commits) x86/paravirt: Use common macro for creating simple asm paravirt functions x86/paravirt: Remove clobber bitmask from .parainstructions x86/debug: Include percpu.h in debugreg.h to get DECLARE_PER_CPU() et al x86/cpufeatures: Move X86_FEATURE_CALL_DEPTH from bit 18 to bit 19 of word 11, to leave space for WIP X86_FEATURE_SGX_EDECCSSA bit x86/Kconfig: Enable kernel IBT by default x86,pm: Force out-of-line memcpy() objtool: Fix weak hole vs prefix symbol objtool: Optimize elf_dirty_reloc_sym() x86/cfi: Add boot time hash randomization x86/cfi: Boot time selection of CFI scheme x86/ibt: Implement FineIBT objtool: Add --cfi to generate the .cfi_sites section x86: Add prefix symbols for function padding objtool: Add option to generate prefix symbols objtool: Avoid O(bloody terrible) behaviour -- an ode to libelf objtool: Slice up elf_create_section_symbol() kallsyms: Revert "Take callthunks into account" x86: Unconfuse CONFIG_ and X86_FEATURE_ namespaces x86/retpoline: Fix crash printing warning x86/paravirt: Fix a !PARAVIRT build warning ...
| * | x86/ibt: Implement FineIBTPeter Zijlstra2022-11-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implement an alternative CFI scheme that merges both the fine-grained nature of kCFI but also takes full advantage of the coarse grained hardware CFI as provided by IBT. To contrast: kCFI is a pure software CFI scheme and relies on being able to read text -- specifically the instruction *before* the target symbol, and does the hash validation *before* doing the call (otherwise control flow is compromised already). FineIBT is a software and hardware hybrid scheme; by ensuring every branch target starts with a hash validation it is possible to place the hash validation after the branch. This has several advantages: o the (hash) load is avoided; no memop; no RX requirement. o IBT WAIT-FOR-ENDBR state is a speculation stop; by placing the hash validation in the immediate instruction after the branch target there is a minimal speculation window and the whole is a viable defence against SpectreBHB. o Kees feels obliged to mention it is slightly more vulnerable when the attacker can write code. Obviously this patch relies on kCFI, but additionally it also relies on the padding from the call-depth-tracking patches. It uses this padding to place the hash-validation while the call-sites are re-written to modify the indirect target to be 16 bytes in front of the original target, thus hitting this new preamble. Notably, there is no hardware that needs call-depth-tracking (Skylake) and supports IBT (Tigerlake and onwards). Suggested-by: Joao Moreira (Intel) <joao@overdrivepizza.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20221027092842.634714496@infradead.org
| * | x86: Add prefix symbols for function paddingPeter Zijlstra2022-11-011-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When code is compiled with: -fpatchable-function-entry=${PADDING_BYTES},${PADDING_BYTES} functions will have PADDING_BYTES of NOP in front of them. Unwinders and other things that symbolize code locations will typically attribute these bytes to the preceding function. Given that these bytes nominally belong to the following symbol this mis-attribution is confusing. Inspired by the fact that CFI_CLANG emits __cfi_##name symbols to claim these bytes, use objtool to emit __pfx_##name symbols to do the same when CFI_CLANG is not used. This then shows the callthunk for symbol 'name' as: __pfx_##name+0x6/0x10 Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Yujie Liu <yujie.liu@intel.com> Link: https://lkml.kernel.org/r/20221028194453.592512209@infradead.org
| * | objtool: Add --hacks=skylakePeter Zijlstra2022-10-171-0/+1
| |/ | | | | | | | | | | | | | | | | Make the call/func sections selectable via the --hacks option. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20220915111146.120821440@infradead.org
* | Merge branch 'dt/dtbo-rename' into dt/nextRob Herring2022-10-261-1/+22
|\ \
| * | kbuild: Allow DTB overlays to built into .dtbo.S filesAndrew Davis2022-10-261-1/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DTB files can be built into the kernel by converting them to assembly files then assembling them into object files. We extend this here for DTB overlays with the .dtso extensions. We change the start and end delimiting tag prefix to make it clear that this data came from overlay files. [Based on patch by Frank Rowand <frank.rowand@sony.com>] Signed-off-by: Andrew Davis <afd@ti.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Frank Rowand <frowand.list@gmail.com> Tested-by: Frank Rowand <frowand.list@gmail.com> Link: https://lore.kernel.org/r/20221024173434.32518-3-afd@ti.com Signed-off-by: Rob Herring <robh@kernel.org>
| * | kbuild: Allow DTB overlays to built from .dtso named source filesAndrew Davis2022-10-261-0/+3
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently DTB Overlays (.dtbo) are build from source files with the same extension (.dts) as the base DTs (.dtb). This may become confusing and even lead to wrong results. For example, a composite DTB (created from a base DTB and a set of overlays) might have the same name as one of the overlays that create it. Different files should be generated from differently named sources. .dtb <-> .dts .dtbo <-> .dtso We do not remove the ability to compile DTBO files from .dts files here, only add a new rule allowing the .dtso file name. The current .dts named overlays can be renamed with time. After all have been renamed we can remove the other rule. Signed-off-by: Andrew Davis <afd@ti.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Frank Rowand <frowand.list@gmail.com> Tested-by: Frank Rowand <frowand.list@gmail.com> Link: https://lore.kernel.org/r/20221024173434.32518-2-afd@ti.com Signed-off-by: Rob Herring <robh@kernel.org>
* / scripts: dtc: only show unique unit address warning for enabled nodesAlexandre Torgue2022-10-211-4/+8
|/ | | | | | | | | | | | | | | | In some cases an hardware peripheral can be used for two exclusive usages. For example, on STM32MP15 we have the same peripheral for I2S and SPI. We have dedicated driver for each usage and so a dedicated device node in devicetree. To avoid to get useless warnings running "make W=1 dtbs", this patch adds the "-Wunique_unit_address_if_enabled" flag for a make with W=1. In this case we will detect a duplicate address only if both devices are enabled in the devicetree, which is a real error case. Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com> Link: https://lore.kernel.org/r/20221021084447.5550-1-alexandre.torgue@foss.st.com [robh: Refactor options and keep 'unique_unit_address' for W=2] Signed-off-by: Rob Herring <robh@kernel.org>
* Merge tag 'mm-stable-2022-10-08' of ↵Linus Torvalds2022-10-101-0/+9
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: - Yu Zhao's Multi-Gen LRU patches are here. They've been under test in linux-next for a couple of months without, to my knowledge, any negative reports (or any positive ones, come to that). - Also the Maple Tree from Liam Howlett. An overlapping range-based tree for vmas. It it apparently slightly more efficient in its own right, but is mainly targeted at enabling work to reduce mmap_lock contention. Liam has identified a number of other tree users in the kernel which could be beneficially onverted to mapletrees. Yu Zhao has identified a hard-to-hit but "easy to fix" lockdep splat at [1]. This has yet to be addressed due to Liam's unfortunately timed vacation. He is now back and we'll get this fixed up. - Dmitry Vyukov introduces KMSAN: the Kernel Memory Sanitizer. It uses clang-generated instrumentation to detect used-unintialized bugs down to the single bit level. KMSAN keeps finding bugs. New ones, as well as the legacy ones. - Yang Shi adds a userspace mechanism (madvise) to induce a collapse of memory into THPs. - Zach O'Keefe has expanded Yang Shi's madvise(MADV_COLLAPSE) to support file/shmem-backed pages. - userfaultfd updates from Axel Rasmussen - zsmalloc cleanups from Alexey Romanov - cleanups from Miaohe Lin: vmscan, hugetlb_cgroup, hugetlb and memory-failure - Huang Ying adds enhancements to NUMA balancing memory tiering mode's page promotion, with a new way of detecting hot pages. - memcg updates from Shakeel Butt: charging optimizations and reduced memory consumption. - memcg cleanups from Kairui Song. - memcg fixes and cleanups from Johannes Weiner. - Vishal Moola provides more folio conversions - Zhang Yi removed ll_rw_block() :( - migration enhancements from Peter Xu - migration error-path bugfixes from Huang Ying - Aneesh Kumar added ability for a device driver to alter the memory tiering promotion paths. For optimizations by PMEM drivers, DRM drivers, etc. - vma merging improvements from Jakub Matěn. - NUMA hinting cleanups from David Hildenbrand. - xu xin added aditional userspace visibility into KSM merging activity. - THP & KSM code consolidation from Qi Zheng. - more folio work from Matthew Wilcox. - KASAN updates from Andrey Konovalov. - DAMON cleanups from Kaixu Xia. - DAMON work from SeongJae Park: fixes, cleanups. - hugetlb sysfs cleanups from Muchun Song. - Mike Kravetz fixes locking issues in hugetlbfs and in hugetlb core. Link: https://lkml.kernel.org/r/CAOUHufZabH85CeUN-MEMgL8gJGzJEWUrkiM58JkTbBhh-jew0Q@mail.gmail.com [1] * tag 'mm-stable-2022-10-08' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (555 commits) hugetlb: allocate vma lock for all sharable vmas hugetlb: take hugetlb vma_lock when clearing vma_lock->vma pointer hugetlb: fix vma lock handling during split vma and range unmapping mglru: mm/vmscan.c: fix imprecise comments mm/mglru: don't sync disk for each aging cycle mm: memcontrol: drop dead CONFIG_MEMCG_SWAP config symbol mm: memcontrol: use do_memsw_account() in a few more places mm: memcontrol: deprecate swapaccounting=0 mode mm: memcontrol: don't allocate cgroup swap arrays when memcg is disabled mm/secretmem: remove reduntant return value mm/hugetlb: add available_huge_pages() func mm: remove unused inline functions from include/linux/mm_inline.h selftests/vm: add selftest for MADV_COLLAPSE of uffd-minor memory selftests/vm: add file/shmem MADV_COLLAPSE selftest for cleared pmd selftests/vm: add thp collapse shmem testing selftests/vm: add thp collapse file and tmpfs testing selftests/vm: modularize thp collapse memory operations selftests/vm: dedup THP helpers mm/khugepaged: add tracepoint to hpage_collapse_scan_file() mm/madvise: add file and shmem support to MADV_COLLAPSE ...
| * kmsan: add KMSAN runtime coreAlexander Potapenko2022-10-031-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For each memory location KernelMemorySanitizer maintains two types of metadata: 1. The so-called shadow of that location - а byte:byte mapping describing whether or not individual bits of memory are initialized (shadow is 0) or not (shadow is 1). 2. The origins of that location - а 4-byte:4-byte mapping containing 4-byte IDs of the stack traces where uninitialized values were created. Each struct page now contains pointers to two struct pages holding KMSAN metadata (shadow and origins) for the original struct page. Utility routines in mm/kmsan/core.c and mm/kmsan/shadow.c handle the metadata creation, addressing, copying and checking. mm/kmsan/report.c performs error reporting in the cases an uninitialized value is used in a way that leads to undefined behavior. KMSAN compiler instrumentation is responsible for tracking the metadata along with the kernel memory. mm/kmsan/instrumentation.c provides the implementation for instrumentation hooks that are called from files compiled with -fsanitize=kernel-memory. To aid parameter passing (also done at instrumentation level), each task_struct now contains a struct kmsan_task_state used to track the metadata of function parameters and return values for that task. Finally, this patch provides CONFIG_KMSAN that enables KMSAN, and declares CFLAGS_KMSAN, which are applied to files compiled with KMSAN. The KMSAN_SANITIZE:=n Makefile directive can be used to completely disable KMSAN instrumentation for certain files. Similarly, KMSAN_ENABLE_CHECKS:=n disables KMSAN checks and makes newly created stack memory initialized. Users can also use functions from include/linux/kmsan-checks.h to mark certain memory regions as uninitialized or initialized (this is called "poisoning" and "unpoisoning") or check that a particular region is initialized. Link: https://lkml.kernel.org/r/20220915150417.722975-12-glider@google.com Signed-off-by: Alexander Potapenko <glider@google.com> Acked-by: Marco Elver <elver@google.com> Cc: Alexander Viro <viro@zeniv.linux.org.uk> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Andrey Konovalov <andreyknvl@gmail.com> Cc: Andrey Konovalov <andreyknvl@google.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Borislav Petkov <bp@alien8.de> Cc: Christoph Hellwig <hch@lst.de> Cc: Christoph Lameter <cl@linux.com> Cc: David Rientjes <rientjes@google.com> Cc: Dmitry Vyukov <dvyukov@google.com> Cc: Eric Biggers <ebiggers@google.com> Cc: Eric Biggers <ebiggers@kernel.org> Cc: Eric Dumazet <edumazet@google.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Ilya Leoshkevich <iii@linux.ibm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: Kees Cook <keescook@chromium.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Petr Mladek <pmladek@suse.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vasily Gorbik <gor@linux.ibm.com> Cc: Vegard Nossum <vegard.nossum@oracle.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
* | Merge tag 'devicetree-for-6.1' of ↵Linus Torvalds2022-10-101-8/+6
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: "DT core: - Fix node refcounting in of_find_last_cache_level() - Constify device_node in of_device_compatible_match() - Fix 'dma-ranges' handling in bus controller nodes - Fix handling of initrd start > end - Improve error reporting in of_irq_init() - Taint kernel on DT unittest running - Use strscpy instead of strlcpy - Add a build target, dt_compatible_check, to check for compatible strings used in kernel sources against compatible strings in DT schemas. - Handle DT_SCHEMA_FILES changes when rebuilding DT bindings: - LED bindings for MT6370 PMIC - Convert Mediatek mtk-gce mailbox, MIPS CPU interrupt controller, mt7621 I2C, virtio,pci-iommu, nxp,tda998x, QCom fastrpc, qcom,pdc, and arm,versatile-sysreg to DT schema format - Add nvmem cells to u-boot,env schema - Add more LED_COLOR_ID definitions - Require 'opp-table' uses to be a node - Various schema fixes to match QEMU 'virt' DT usage - Tree wide dropping of redundant 'Device Tree Binding' in schema titles - More (unevaluated|additional)Properties fixes in schema child nodes - Drop various redundant minItems equal to maxItems" * tag 'devicetree-for-6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (62 commits) of: base: Shift refcount decrement in of_find_last_cache_level() dt-bindings: leds: Add MediaTek MT6370 flashlight dt-bindings: leds: mt6370: Add MediaTek MT6370 current sink type LED indicator dt-bindings: mailbox: Convert mtk-gce to DT schema of: base: make of_device_compatible_match() accept const device node of: Fix "dma-ranges" handling for bus controllers of: fdt: Remove unused struct fdt_scan_status dt-bindings: display: st,stm32-dsi: Handle data-lanes in DSI port node dt-bindings: timer: Add power-domains for TI timer-dm on K3 dt: Add a check for undocumented compatible strings in kernel kbuild: take into account DT_SCHEMA_FILES changes while checking dtbs dt-bindings: interrupt-controller: migrate MIPS CPU interrupt controller text bindings to YAML dt-bindings: i2c: migrate mt7621 text bindings to YAML dt-bindings: power: gpcv2: correct patternProperties dt-bindings: virtio: Convert virtio,pci-iommu to DT schema dt-bindings: timer: arm,arch_timer: Allow dual compatible string dt-bindings: arm: cpus: Add kryo240 compatible dt-bindings: display: bridge: nxp,tda998x: Convert to json-schema dt-bindings: nvmem: u-boot,env: add basic NVMEM cells dt-bindings: remoteproc: qcom,adsp: enforce smd-edge schema ...
| * | kbuild: take into account DT_SCHEMA_FILES changes while checking dtbsDmitry Baryshkov2022-09-271-8/+6
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is useful to be able to recheck dtbs files against a limited set of DT schema files. This can be accomplished by using differnt DT_SCHEMA_FILES argument values while rerunning make dtbs_check. However for some reason if_changed_rule doesn't pick up the rule_dtc changes (and doesn't retrigger the build). Fix this by changing if_changed_rule to if_changed_dep and squashing DTC and dt-validate into a single new command. Then if_changed_dep triggers on DT_SCHEMA_FILES changes and reruns the build/check. Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Link: https://lore.kernel.org/r/20220915114422.79378-1-dmitry.baryshkov@linaro.org Signed-off-by: Rob Herring <robh@kernel.org>
* | Merge tag 'kbuild-v6.1' of ↵Linus Torvalds2022-10-101-15/+18
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Remove potentially incomplete targets when Kbuid is interrupted by SIGINT etc in case GNU Make may miss to do that when stderr is piped to another program. - Rewrite the single target build so it works more correctly. - Fix rpm-pkg builds with V=1. - List top-level subdirectories in ./Kbuild. - Ignore auto-generated __kstrtab_* and __kstrtabns_* symbols in kallsyms. - Avoid two different modules in lib/zstd/ having shared code, which potentially causes building the common code as build-in and modular back-and-forth. - Unify two modpost invocations to optimize the build process. - Remove head-y syntax in favor of linker scripts for placing particular sections in the head of vmlinux. - Bump the minimal GNU Make version to 3.82. - Clean up misc Makefiles and scripts. * tag 'kbuild-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (41 commits) docs: bump minimal GNU Make version to 3.82 ia64: simplify esi object addition in Makefile Revert "kbuild: Check if linker supports the -X option" kbuild: rebuild .vmlinux.export.o when its prerequisite is updated kbuild: move modules.builtin(.modinfo) rules to Makefile.vmlinux_o zstd: Fixing mixed module-builtin objects kallsyms: ignore __kstrtab_* and __kstrtabns_* symbols kallsyms: take the input file instead of reading stdin kallsyms: drop duplicated ignore patterns from kallsyms.c kbuild: reuse mksysmap output for kallsyms mksysmap: update comment about __crc_* kbuild: remove head-y syntax kbuild: use obj-y instead extra-y for objects placed at the head kbuild: hide error checker logs for V=1 builds kbuild: re-run modpost when it is updated kbuild: unify two modpost invocations kbuild: move vmlinux.o rule to the top Makefile kbuild: move .vmlinux.objs rule to Makefile.modpost kbuild: list sub-directories in ./Kbuild Makefile.compiler: replace cc-ifversion with compiler-specific macros ...
| * | kbuild: list sub-directories in ./KbuildMasahiro Yamada2022-09-291-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use the ordinary obj-y syntax to list subdirectories. Note1: Previously, the link order of lib-y depended on CONFIG_MODULES; lib-y was linked before drivers-y when CONFIG_MODULES=y, otherwise after drivers-y. This was a bug of commit 7273ad2b08f8 ("kbuild: link lib-y objects to vmlinux forcibly when CONFIG_MODULES=y"), but it was not a big deal after all. Now, all objects listed in lib-y are linked last, irrespective of CONFIG_MODULES. Note2: Finally, the single target build in arch/*/lib/ works correctly. There was a bug report about this. [1] $ make ARCH=arm arch/arm/lib/findbit.o CALL scripts/checksyscalls.sh AS arch/arm/lib/findbit.o [1]: https://lore.kernel.org/linux-kbuild/YvUQOwL6lD4%2F5%2FU6@shell.armlinux.org.uk/ Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
| * | kbuild: use objtool-args-y to clean up objtool argumentsMasahiro Yamada2022-09-291-15/+16
| |/ | | | | | | | | | | | | | | | | | | Based on Linus' patch. Refactor scripts/Makefile.vmlinux_o as well. Link: https://lore.kernel.org/lkml/CAHk-=wgjTMQgiKzBZTmb=uWGDEQxDdyF1+qxBkODYciuNsmwnw@mail.gmail.com/ Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Peter Zijlstra <peterz@infradead.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
* / Kbuild: add Rust supportMiguel Ojeda2022-09-281-0/+12
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Having most of the new files in place, we now enable Rust support in the build system, including `Kconfig` entries related to Rust, the Rust configuration printer and a few other bits. Reviewed-by: Kees Cook <keescook@chromium.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Tested-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com> Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com> Co-developed-by: Finn Behrens <me@kloenk.de> Signed-off-by: Finn Behrens <me@kloenk.de> Co-developed-by: Adam Bratschi-Kaye <ark.email@gmail.com> Signed-off-by: Adam Bratschi-Kaye <ark.email@gmail.com> Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com> Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com> Co-developed-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Co-developed-by: Sven Van Asbroeck <thesven73@gmail.com> Signed-off-by: Sven Van Asbroeck <thesven73@gmail.com> Co-developed-by: Gary Guo <gary@garyguo.net> Signed-off-by: Gary Guo <gary@garyguo.net> Co-developed-by: Boris-Chengbiao Zhou <bobo1239@web.de> Signed-off-by: Boris-Chengbiao Zhou <bobo1239@web.de> Co-developed-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Co-developed-by: Douglas Su <d0u9.su@outlook.com> Signed-off-by: Douglas Su <d0u9.su@outlook.com> Co-developed-by: Dariusz Sosnowski <dsosnowski@dsosnowski.pl> Signed-off-by: Dariusz Sosnowski <dsosnowski@dsosnowski.pl> Co-developed-by: Antonio Terceiro <antonio.terceiro@linaro.org> Signed-off-by: Antonio Terceiro <antonio.terceiro@linaro.org> Co-developed-by: Daniel Xu <dxu@dxuuu.xyz> Signed-off-by: Daniel Xu <dxu@dxuuu.xyz> Co-developed-by: Björn Roy Baron <bjorn3_gh@protonmail.com> Signed-off-by: Björn Roy Baron <bjorn3_gh@protonmail.com> Co-developed-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Signed-off-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
* x86/retbleed: Add fine grained Kconfig knobsPeter Zijlstra2022-06-291-0/+1
| | | | | | | | | | Do fine-grained Kconfig for all the various retbleed parts. NOTE: if your compiler doesn't support return thunks this will silently 'upgrade' your mitigation to IBPB, you might not like this. Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Borislav Petkov <bp@suse.de>
* Merge tag 'objtool-urgent-2022-06-05' of ↵Linus Torvalds2022-06-051-1/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull objtool fixes from Thomas Gleixner: - Handle __ubsan_handle_builtin_unreachable() correctly and treat it as noreturn - Allow architectures to select uaccess validation - Use the non-instrumented bit test for test_cpu_has() to prevent escape from non-instrumentable regions - Use arch_ prefixed atomics for JUMP_LABEL=n builds to prevent escape from non-instrumentable regions - Mark a few tiny inline as __always_inline to prevent GCC from bringing them out of line and instrumenting them - Mark the empty stub context_tracking_enabled() as always inline as GCC brings them out of line and instruments the empty shell - Annotate ex_handler_msr_mce() as dead end * tag 'objtool-urgent-2022-06-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/extable: Annotate ex_handler_msr_mce() as a dead end context_tracking: Always inline empty stubs x86: Always inline on_thread_stack() and current_top_of_stack() jump_label,noinstr: Avoid instrumentation for JUMP_LABEL=n builds x86/cpu: Elide KCSAN for cpu_has() and friends objtool: Mark __ubsan_handle_builtin_unreachable() as noreturn objtool: Add CONFIG_HAVE_UACCESS_VALIDATION
* | kbuild: factor out the common objtool argumentsMasahiro Yamada2022-06-051-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | scripts/Makefile.build and scripts/link-vmlinux.sh have similar setups for the objtool arguments. It was difficult to factor out them because all the vmlinux build rules were written in a shell script. It is somewhat tedious to touch the two files every time a new objtool option is supported. To reduce the code duplication, move the objtool for vmlinux.o into scripts/Makefile.vmlinux_o. Then, move the common macros to Makefile.lib so they are shared between Makefile.build and Makefile.vmlinux_o. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64)
* | kbuild: do not create *.prelink.o for Clang LTO or IBTMasahiro Yamada2022-05-291-7/+0
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When CONFIG_LTO_CLANG=y, additional intermediate *.prelink.o is created for each module. Also, objtool is postponed until LLVM IR is converted to ELF. CONFIG_X86_KERNEL_IBT works in a similar way to postpone objtool until objects are merged together. This commit stops generating *.prelink.o, so the build flow will look similar with/without LTO. The following figures show how the LTO build currently works, and how this commit is changing it. Current build flow ================== [1] single-object module $(LD) $(CC) +objtool $(LD) foo.c --------------------> foo.o -----> foo.prelink.o -----> foo.ko (LLVM IR) (ELF) | (ELF) | foo.mod.o --/ (LLVM IR) [2] multi-object module $(LD) $(CC) $(AR) +objtool $(LD) foo1.c -----> foo1.o -----> foo.o -----> foo.prelink.o -----> foo.ko | (archive) (ELF) | (ELF) foo2.c -----> foo2.o --/ | (LLVM IR) foo.mod.o --/ (LLVM IR) One confusion is that foo.o in multi-object module is an archive despite of its suffix. New build flow ============== [1] single-object module Since there is only one object, there is no need to keep the LLVM IR. Use $(CC)+$(LD) to generate an ELF object in one build rule. When LTO is disabled, $(LD) is unneeded because $(CC) produces an ELF object. $(CC)+$(LD)+objtool $(LD) foo.c ----------------------------> foo.o ---------> foo.ko (ELF) | (ELF) | foo.mod.o --/ (LLVM IR) [2] multi-object module Previously, $(AR) was used to combine LLVM IR files into an archive, but there was no technical reason to do so. Use $(LD) to merge them into a single ELF object. $(LD) $(CC) +objtool $(LD) foo1.c ---------> foo1.o ---------> foo.o ---------> foo.ko | (ELF) | (ELF) foo2.c ---------> foo2.o ----/ | (LLVM IR) foo.mod.o --/ (LLVM IR) Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu> Tested-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM-14 (x86-64) Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
* kbuild: make multi_depend work with targets in subdirectoryMasahiro Yamada2022-05-081-3/+3
| | | | | | | | | | | | | | | | | | | | Precisely speaking, when you get the stem of the path, you should use $(patsubst $(obj)/%,%,...) instead of $(notdir ...). I do not see this usecase, but if you create a composite object in a subdirectory, the Makefile should look like this: obj-$(CONFIG_FOO) += dir/foo.o dir/foo-objs := dir/foo1.o dir/foo2.o The member objects should be assigned to dir/foo-objs instead of foo-objs. This syntax is more consistent with commit 54b8ae66ae1a ("kbuild: change *FLAGS_<basetarget>.o to take the path relative to $(obj)"). Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
* kbuild: reuse suffix-search to refactor multi_dependMasahiro Yamada2022-05-081-1/+1
| | | | | | | | | The complicated part of multi_depend is the same as suffix-search. Reuse it. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
* Merge tag 'kbuild-v5.18-v2' of ↵Linus Torvalds2022-03-311-10/+6
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild updates from Masahiro Yamada: - Add new environment variables, USERCFLAGS and USERLDFLAGS to allow additional flags to be passed to user-space programs. - Fix missing fflush() bugs in Kconfig and fixdep - Fix a minor bug in the comment format of the .config file - Make kallsyms ignore llvm's local labels, .L* - Fix UAPI compile-test for cross-compiling with Clang - Extend the LLVM= syntax to support LLVM=<suffix> form for using a particular version of LLVm, and LLVM=<prefix> form for using custom LLVM in a particular directory path. - Clean up Makefiles * tag 'kbuild-v5.18-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: Make $(LLVM) more flexible kbuild: add --target to correctly cross-compile UAPI headers with Clang fixdep: use fflush() and ferror() to ensure successful write to files arch: syscalls: simplify uapi/kapi directory creation usr/include: replace extra-y with always-y certs: simplify empty certs creation in certs/Makefile certs: include certs/signing_key.x509 unconditionally kallsyms: ignore all local labels prefixed by '.L' kconfig: fix missing '# end of' for empty menu kconfig: add fflush() before ferror() check kbuild: replace $(if A,A,B) with $(or A,B) kbuild: Add environment variables for userprogs flags kbuild: unify cmd_copy and cmd_shipped
| * kbuild: replace $(if A,A,B) with $(or A,B)Masahiro Yamada2022-02-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $(or ...) is available since GNU Make 3.81, and useful to shorten the code in some places. Covert as follows: $(if A,A,B) --> $(or A,B) This patch also converts: $(if A, A, B) --> $(or A, B) Strictly speaking, the latter is not an equivalent conversion because GNU Make keeps spaces after commas; if A is not empty, $(if A, A, B) expands to " A", while $(or A, B) expands to "A". Anyway, preceding spaces are not significant in the code hunks I touched. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
| * kbuild: unify cmd_copy and cmd_shippedMasahiro Yamada2022-02-141-8/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cmd_copy and cmd_shipped have similar functionality. The difference is that cmd_copy uses 'cp' while cmd_shipped 'cat'. Unify them into cmd_copy because this macro name is more intuitive. Going forward, cmd_copy will use 'cat' to avoid the permission issue. I also thought of 'cp --no-preserve=mode' but this option is not mentioned in the POSIX spec [1], so I am keeping the 'cat' command. [1]: https://pubs.opengroup.org/onlinepubs/009695299/utilities/cp.html Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Gabriel Krisman Bertazi <krisman@collabora.com>
* | Merge tag 'x86_core_for_5.18_rc1' of ↵Linus Torvalds2022-03-271-2/+2
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 CET-IBT (Control-Flow-Integrity) support from Peter Zijlstra: "Add support for Intel CET-IBT, available since Tigerlake (11th gen), which is a coarse grained, hardware based, forward edge Control-Flow-Integrity mechanism where any indirect CALL/JMP must target an ENDBR instruction or suffer #CP. Additionally, since Alderlake (12th gen)/Sapphire-Rapids, speculation is limited to 2 instructions (and typically fewer) on branch targets not starting with ENDBR. CET-IBT also limits speculation of the next sequential instruction after the indirect CALL/JMP [1]. CET-IBT is fundamentally incompatible with retpolines, but provides, as described above, speculation limits itself" [1] https://www.intel.com/content/www/us/en/developer/articles/technical/software-security-guidance/technical-documentation/branch-history-injection.html * tag 'x86_core_for_5.18_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (53 commits) kvm/emulate: Fix SETcc emulation for ENDBR x86/Kconfig: Only allow CONFIG_X86_KERNEL_IBT with ld.lld >= 14.0.0 x86/Kconfig: Only enable CONFIG_CC_HAS_IBT for clang >= 14.0.0 kbuild: Fixup the IBT kbuild changes x86/Kconfig: Do not allow CONFIG_X86_X32_ABI=y with llvm-objcopy x86: Remove toolchain check for X32 ABI capability x86/alternative: Use .ibt_endbr_seal to seal indirect calls objtool: Find unused ENDBR instructions objtool: Validate IBT assumptions objtool: Add IBT/ENDBR decoding objtool: Read the NOENDBR annotation x86: Annotate idtentry_df() x86,objtool: Move the ASM_REACHABLE annotation to objtool.h x86: Annotate call_on_stack() objtool: Rework ASM_REACHABLE x86: Mark __invalid_creds() __noreturn exit: Mark do_group_exit() __noreturn x86: Mark stop_this_cpu() __noreturn objtool: Ignore extra-symbol code objtool: Rename --duplicate to --lto ...
| * | kbuild: Fixup the IBT kbuild changesPeter Zijlstra2022-03-221-2/+2
| |/ | | | | | | | | | | | | | | | | Masahiro-san deemed my kbuild changes to support whole module objtool runs too terrible to live and gracefully provided an alternative. Suggested-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/CAK7LNAQ2mYMnOKMQheVi+6byUFE3KEkjm1zcndNUfe0tORGvug@mail.gmail.com
* | dt-bindings: kbuild: Use DTB files for validationRob Herring2022-03-111-13/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Switch the DT validation to use DTB files directly instead of a DTS to YAML conversion. The original motivation for supporting validation on DTB files was to enable running validation on a running system (e.g. 'dt-validate /sys/firmware/fdt') or other cases where the original source DTS is not available. The YAML format was not without issues. Using DTBs with the schema type information solves some of those problems. The YAML format relies on the DTS source level information including bracketing of properties, size directives, and phandle tags all of which are lost in a DTB file. While standardizing the bracketing is a good thing, it does cause a lot of extra warnings and churn to fix them. Another issue has been signed types are not validated correctly as sign information is not propagated to YAML. Using the schema type information allows for proper handling of signed types. YAML also can't represent the full range of 64-bit integers as numbers are stored as floats by most/all parsers. The DTB validation works by decoding property values using the type information in the schemas themselves. The main corner case this does not work for is matrix types where neither dimension is fixed. For now, checking the dimensions in these cases are skipped. Signed-off-by: Rob Herring <robh@kernel.org> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220310160513.1708182-3-robh@kernel.org
* | dt-bindings: kbuild: Pass DT_SCHEMA_FILES to dt-validateRob Herring2022-03-111-3/+2
|/ | | | | | | | | | | | | | | | In preparation for supporting validation of DTB files, the full processed schema will always be needed in order to extract type information from it. Therefore, the processed schema containing only what DT_SCHEMA_FILES specifies won't work. Instead, dt-validate has gained an option, -l or --limit, to specify which schema(s) to use for validation. As the command line option is new, we the minimum dtschema version must be updated. Cc: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20220310160513.1708182-2-robh@kernel.org
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 12:00:45 +0000