Changes in Makefile

7f7f6f7a - Makefile: remove redundant tool coverage variables

Mon, 06 May 2024 13:35:43 +0000

Makefile: remove redundant tool coverage variablesNow Kbuild provides reasonable defaults for objtool, sanitizers, andprofilers.Remove redundant variables.Note:This commit changes the coverage for some objects: - include arch/mips/vdso/vdso-image.o into UBSAN, GCOV, KCOV - include arch/sparc/vdso/vdso-image-*.o into UBSAN - include arch/sparc/vdso/vma.o into UBSAN - include arch/x86/entry/vdso/extable.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso-image-*.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vdso32-setup.o into KASAN, KCSAN, UBSAN, GCOV, KCOV - include arch/x86/entry/vdso/vma.o into GCOV, KCOV - include arch/x86/um/vdso/vma.o into KASAN, GCOV, KCOVI believe these are positive effects because all of them are kernelspace objects.Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook Tested-by: Roberto Sassu List of files: /linux-6.15/arch/powerpc/purgatory/Makefile

20188bac - powerpc/purgatory: remove PGO flags

Fri, 19 May 2023 14:47:38 +0000

powerpc/purgatory: remove PGO flagsIf profile-guided optimization is enabled, the purgatory ends up withmultiple .text sections. This is not supported by kexec and crashes thesystem.Link: https://lkml.kernel.org/r/20230321-kexec_clang16-v7-3-b05c520b7296@chromium.orgFixes: 930457057abe ("kernel/kexec_file.c: split up __kexec_load_puragory")Signed-off-by: Ricardo Ribalda Cc: Michael Ellerman Cc: Nicholas Piggin Cc: Christophe Leroy Cc: Cc: Albert Ou Cc: Baoquan He Cc: Borislav Petkov (AMD) Cc: Dave Hansen Cc: Dave Young Cc: Eric W. Biederman Cc: "H. Peter Anvin" Cc: Ingo Molnar Cc: Nathan Chancellor Cc: Nick Desaulniers Cc: Palmer Dabbelt Cc: Palmer Dabbelt Cc: Paul Walmsley Cc: Philipp Rudo Cc: Ross Zwisler Cc: Simon Horman Cc: Steven Rostedt (Google) Cc: Thomas Gleixner Cc: Tom Rix Signed-off-by: Andrew Morton List of files: /linux-6.15/arch/powerpc/purgatory/Makefile

2fb857bc - powerpc/kcsan: Add exclusions from instrumentation

Mon, 06 Feb 2023 02:17:57 +0000

powerpc/kcsan: Add exclusions from instrumentationExclude various incompatible compilation units from KCSANinstrumentation.Signed-off-by: Rohan McLure Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20230206021801.105268-2-rmclure@linux.ibm.com List of files: /linux-6.15/arch/powerpc/purgatory/Makefile

92579713 - powerpc/purgatory: Omit use of bin2c

Mon, 25 Jul 2022 01:56:19 +0000

powerpc/purgatory: Omit use of bin2cThe .incbin assembler directive is much faster than bin2c + $(CC).Do similar refactoring as in commit 4c0f032d4963 ("s390/purgatory:Omit use of bin2c").Please note the .quad directive matches to size_t in C (both 8 byte)because the purgatory is compiled only for the 64-bit kernel.(KEXEC_FILE depends on PPC64).Signed-off-by: Masahiro Yamada Reviewed-by: Segher Boessenkool Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20220725015619.618070-1-masahiroy@kernel.org List of files: /linux-6.15/arch/powerpc/purgatory/Makefile

19031275 - powerpc/kexec_file: Mark PPC64 specific code

Wed, 29 Jul 2020 11:39:41 +0000

powerpc/kexec_file: Mark PPC64 specific codeSome of the kexec_file_load code isn't PPC64 specific. Move PPC64specific code from kexec/file_load.c to kexec/file_load_64.c. Also,rename purgatory/trampoline.S to purgatory/trampoline_64.S in the samespirit. No functional changes.Signed-off-by: Hari Bathini Tested-by: Pingfan Liu Reviewed-by: Laurent Dufour Reviewed-by: Thiago Jung Bauermann Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/159602276920.575379.10390965946438306388.stgit@hbathini List of files: /linux-6.15/arch/powerpc/purgatory/Makefile

f072015c - powerpc: disable KASAN instrumentation on early/critical files.

Fri, 26 Apr 2019 16:23:33 +0000

powerpc: disable KASAN instrumentation on early/critical files.All files containing functions run before kasan_early_init() is calledmust have KASAN instrumentation disabled.For those file, branch profiling also have to be disabled otherwiseeach if () generates a call to ftrace_likely_update().Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/purgatory/Makefile

c417fbce - kbuild: move bin2c back to scripts/ from scripts/basic/

Mon, 25 Jun 2018 16:40:23 +0000

kbuild: move bin2c back to scripts/ from scripts/basic/Commit 8370edea81e3 ("bin2c: move bin2c in scripts/basic") moved bin2cto the scripts/basic/ directory, incorrectly stating "Kexec wants touse bin2c and it wants to use it really early in the build process.See arch/x86/purgatory/ code in later patches."Commit bdab125c9301 ("Revert "kexec/purgatory: Add clean-up forpurgatory directory"") and commit d6605b6bbee8 ("x86/build: Removeunnecessary preparation for purgatory") removed the redundantpurgatory build magic entirely.That means that the move of bin2c was unnecessary in the first place.fixdep is the only host program that deserves to sit in thescripts/basic/ directory.Signed-off-by: Masahiro Yamada List of files: /linux-6.15/arch/powerpc/purgatory/Makefile

b2441318 - License cleanup: add SPDX GPL-2.0 license identifier to files with no license

Wed, 01 Nov 2017 14:07:57 +0000

License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseMany source files in the tree are missing licensing information, whichmakes it harder for compliance tools to determine the correct license.By default all files without license information are under the defaultlicense of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'SPDX license identifier. The SPDX identifier is a legally bindingshorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart andPhilippe Ombredanne.How this work was done:Patches were generated and checked against linux-4.14-rc6 for a subset ofthe use cases: - file had no licensing information it it. - file was a */uapi/* one with no licensing information in it, - file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up caseswhere non-standard license headers were used, and references to licensehad to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied toa file was done in a spreadsheet of side by side results from of theoutput of two independent scanners (ScanCode & Windriver) producing SPDXtag:value files created by Philippe Ombredanne. Philippe prepared thebase worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 filesassessed. Kate Stewart did a file by file comparison of the scannerresults in the spreadsheet to determine which SPDX license identifier(s)to be applied to the file. She confirmed any determination that was notimmediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was: - Files considered eligible had to be source code files. - Make and config files were included as candidates if they contained >5 lines of source - File already had some variant of a license header in it (even if <5 lines).All documentation files were explicitly excluded.The following heuristics were used to determine which SPDX licenseidentifiers to apply. - when both scanners couldn't find any license traces, file was considered to have no license information in it, and the top level COPYING file license applied. For non */uapi/* files that summary was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 11139 and resulted in the first patch in this series. If that file was a */uapi/* path one, it was "GPL-2.0 WITH Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was: SPDX license identifier # files ---------------------------------------------------|------- GPL-2.0 WITH Linux-syscall-note 930 and resulted in the second patch in this series. - if a file had some form of licensing information in it, and was one of the */uapi/* ones, it was denoted with the Linux-syscall-note if any GPL family license was found in the file or had no licensing in it (per prior point). Results summary: SPDX license identifier # files ---------------------------------------------------|------ GPL-2.0 WITH Linux-syscall-note 270 GPL-2.0+ WITH Linux-syscall-note 169 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21 ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17 LGPL-2.1+ WITH Linux-syscall-note 15 GPL-1.0+ WITH Linux-syscall-note 14 ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5 LGPL-2.0+ WITH Linux-syscall-note 4 LGPL-2.1 WITH Linux-syscall-note 3 ((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3 ((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1 and that resulted in the third patch in this series. - when the two scanners agreed on the detected license(s), that became the concluded license(s). - when there was disagreement between the two scanners (one detected a license but the other didn't, or they both detected different licenses) a manual inspection of the file occurred. - In most cases a manual inspection of the information in the file resulted in a clear resolution of the license that should apply (and which scanner probably needed to revisit its heuristics). - When it was not immediately clear, the license identifier was confirmed with lawyers working with the Linux Foundation. - If there was any question as to the appropriate license identifier, the file was flagged for further research and to be revisited later in time.In total, over 70 hours of logged manual review was done on thespreadsheet to determine the SPDX license identifiers to apply to thesource files by Kate, Philippe, Thomas and, in some cases, confirmationby lawyers working with the Linux Foundation.Kate also obtained a third independent scan of the 4.13 code base fromFOSSology, and compared selected files where the other two scannersdisagreed against that SPDX file, to see if there was new insights. TheWindriver scanner is based on an older version of FOSSology in part, sothey are related.Thomas did random spot checks in about 500 files from the spreadsheetsfor the uapi headers and agreed with SPDX license identifier in thefiles he inspected. For the non-uapi files Thomas did random spot checksin about 15000 files.In initial set of patches against 4.14-rc6, 3 files were found to havecopy/paste license identifier errors, and have been fixed to reflect thecorrect identifier.Additionally Philippe spent 10 hours this week doing a detailed manualinspection and review of the 12,461 patched files from the initial patchversion early this week with: - a full scancode scan run, collecting the matched texts, detected license ids and scores - reviewing anything where there was a license detected (about 500+ files) to ensure that the applied SPDX license was correct - reviewing anything where there was no detection but the patch license was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied SPDX license was correctThis produced a worksheet with 20 files needing minor correction. Thisworksheet was then exported into 3 different .csv files for thedifferent types of files to be modified.These .csv files were then reviewed by Greg. Thomas wrote a script toparse the csv files and add the proper SPDX tag to the file, in theformat that the file expected. This script was further refined by Gregbased on the output to detect more types of files automatically and todistinguish between header and source .c files (which need differentcomment types.) Finally Greg ran the script using the .csv files togenerate the patches.Reviewed-by: Kate Stewart Reviewed-by: Philippe Ombredanne Reviewed-by: Thomas Gleixner Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/powerpc/purgatory/Makefile

0d976313 - powerpc: Add purgatory for kexec_file_load() implementation.

Tue, 29 Nov 2016 12:45:52 +0000

powerpc: Add purgatory for kexec_file_load() implementation.This purgatory implementation is based on the versions from kexec-toolsand kexec-lite, with additional changes.Signed-off-by: Thiago Jung Bauermann Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/purgatory/Makefile