Changes in Makefile

893ab004 - kbuild: remove cc-option test of -fno-stack-protector

Fri, 26 Jun 2020 18:59:12 +0000

kbuild: remove cc-option test of -fno-stack-protectorSome Makefiles already pass -fno-stack-protector unconditionally.For example, arch/arm64/kernel/vdso/Makefile, arch/x86/xen/Makefile.No problem report so far about hard-coding this option. So, we canassume all supported compilers know -fno-stack-protector.GCC 4.8 and Clang support this option (https://godbolt.org/z/_HDGzN)Get rid of cc-option from -fno-stack-protector.Remove CONFIG_CC_HAS_STACKPROTECTOR_NONE, which is always 'y'.Note:arch/mips/vdso/Makefile adds -fno-stack-protector twice, firstunconditionally, and second conditionally. I removed the second one.Signed-off-by: Masahiro Yamada Reviewed-by: Kees Cook Acked-by: Ard Biesheuvel Reviewed-by: Nick Desaulniers List of files: /linux-6.15/arch/powerpc/platforms/powermac/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/platforms/powermac/Makefile

20e07af7 - powerpc: Adopt nvram module for PPC64

Tue, 15 Jan 2019 04:18:56 +0000

powerpc: Adopt nvram module for PPC64Adopt nvram module to reduce code duplication. This means CONFIG_NVRAMbecomes available to PPC64 builds. Previously it was only available toPPC32 builds because it depended on CONFIG_GENERIC_NVRAM.The IOC_NVRAM_GET_OFFSET ioctl as implemented on PPC64 validates theoffset returned by pmac_get_partition(). Do the same in the nvram module.Note that the old PPC32 generic_nvram module lacked this test.So when CONFIG_PPC32 && CONFIG_PPC_PMAC, the IOC_NVRAM_GET_OFFSET ioctlwould have returned 0 (always). But when CONFIG_PPC64 && CONFIG_PPC_PMAC,the IOC_NVRAM_GET_OFFSET ioctl would have returned -1 (which is -EPERM)when the requested partition was not found.With this patch, the result is now -EINVAL on both PPC32 and PPC64 whenthe requested PowerMac NVRAM partition is not found. This is a userspace-visible change, in the non-existent partition case, which would be inan error path for an IOC_NVRAM_GET_OFFSET ioctl syscall.Tested-by: Stan Johnson Signed-off-by: Finn Thain Signed-off-by: Greg Kroah-Hartman List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

c3ff2a51 - powerpc/32: add stack protector support

Thu, 27 Sep 2018 07:05:53 +0000

powerpc/32: add stack protector supportThis functionality was tentatively added in the past(commit 6533b7c16ee5 ("powerpc: Initial stack protector(-fstack-protector) support")) but had to be reverted(commit f2574030b0e3 ("powerpc: Revert the initial stackprotector support") because of GCC implementing it differentlywhether it had been built with libc support or not.Now, GCC offers the possibility to manually set thestack-protector mode (global or tls) regardless of libc support.This time, the patch selects HAVE_STACKPROTECTOR only if-mstack-protector-guard=tls is supported by GCC.On PPC32, as register r2 points to current task_struct atall time, the stack_canary located inside task_struct can beused directly by using the following GCC options:-mstack-protector-guard=tls-mstack-protector-guard-reg=r2-mstack-protector-guard-offset=offsetof(struct task_struct, stack_canary))The protector is disabled for prom_init and bootx_init asit is too early to handle it properly. $ echo CORRUPT_STACK > /sys/kernel/debug/provoke-crash/DIRECT[ 134.943666] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: lkdtm_CORRUPT_STACK+0x64/0x64[ 134.943666][ 134.955414] CPU: 0 PID: 283 Comm: sh Not tainted 4.18.0-s3k-dev-12143-ga3272be41209 #835[ 134.963380] Call Trace:[ 134.965860] [c6615d60] [c001f76c] panic+0x118/0x260 (unreliable)[ 134.971775] [c6615dc0] [c001f654] panic+0x0/0x260[ 134.976435] [c6615dd0] [c032c368] lkdtm_CORRUPT_STACK_STRONG+0x0/0x64[ 134.982769] [c6615e00] [ffffffff] 0xffffffffSigned-off-by: Christophe Leroy Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

2a056f58 - powerpc: consolidate -mno-sched-epilog into FTRACE flags

Fri, 14 Sep 2018 05:08:53 +0000

powerpc: consolidate -mno-sched-epilog into FTRACE flagsSigned-off-by: Nicholas Piggin Reviewed-by: Joel Stanley Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/platforms/powermac/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/platforms/powermac/Makefile

9a7841ae - powerpc/ftrace: Use $(CC_FLAGS_FTRACE) when disabling ftrace

Thu, 03 Mar 2016 04:26:58 +0000

powerpc/ftrace: Use $(CC_FLAGS_FTRACE) when disabling ftraceRather than open-coding -pg whereever we want to disable ftrace, use theexisting $(CC_FLAGS_FTRACE) variable.This has the advantage that it will work in future when we use adifferent set of flags to enable ftrace.Signed-off-by: Torsten Duwe Signed-off-by: Michael Ellerman List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

7fb6a53d - cpufreq: powerpc: move cpufreq driver to drivers/cpufreq

Thu, 04 Apr 2013 12:54:25 +0000

cpufreq: powerpc: move cpufreq driver to drivers/cpufreqMove cpufreq driver of powerpc platform to drivers/cpufreq.Signed-off-by: Viresh Kumar Signed-off-by: Rafael J. Wysocki List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

25985edc - Fix common misspellings

Thu, 31 Mar 2011 01:57:33 +0000

Fix common misspellingsFixes generated by 'codespell' and manually reviewed.Signed-off-by: Lucas De Marchi List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

606576ce - ftrace: rename FTRACE to FUNCTION_TRACER

Mon, 06 Oct 2008 23:06:12 +0000

ftrace: rename FTRACE to FUNCTION_TRACERDue to confusion between the ftrace infrastructure and the gcc profilingtracer "ftrace", this patch renames the config options from FTRACE toFUNCTION_TRACER. The other two names that are offspring from FTRACEDYNAMIC_FTRACE and FTRACE_MCOUNT_RECORD will stay the same.This patch was generated mostly by script, and partially by hand.Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

7563dc64 - powerpc: Work around gcc's -fno-omit-frame-pointer bug

Tue, 02 Sep 2008 06:50:38 +0000

powerpc: Work around gcc's -fno-omit-frame-pointer bugThis bug is causing random crashes(http://bugzilla.kernel.org/show_bug.cgi?id=11414).-fno-omit-frame-pointer is only needed on powerpc when -pg is alsosupplied, and there is a gcc bug that causes incorrect code generationon 32-bit powerpc when -fno-omit-frame-pointer is used---it uses stacklocations below the stack pointer, which is not allowed by the ABIbecause those locations can and sometimes do get corrupted by aninterrupt.This ensures that CONFIG_FRAME_POINTER is only selected by ftrace.When CONFIG_FTRACE is enabled we also pass -mno-sched-epilog to workaround the gcc codegen bug.Patch based on work by: Andreas Schwab Segher Boessenkool Signed-off-by: Tony Breeds Signed-off-by: Paul Mackerras List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

9c4cb825 - powerpc: Remove use of CONFIG_PPC_MERGE

Fri, 01 Aug 2008 16:44:11 +0000

powerpc: Remove use of CONFIG_PPC_MERGENow that arch/ppc is gone and CONFIG_PPC_MERGE is always set, removethe dead code associated with !CONFIG_PPC_MERGE from arch/powerpcand include/asm-powerpc.Signed-off-by: Kumar Gala Signed-off-by: Paul Mackerras List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

4e491d14 - ftrace: support for PowerPC

Thu, 15 May 2008 03:49:44 +0000

ftrace: support for PowerPCThis patch adds full support for ftrace for PowerPC (both 64 and 32 bit).This includes dynamic tracing and function filtering.Signed-off-by: Steven Rostedt Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

21e38dfe - [POWERPC] Fix building of pmac32 when CONFIG_NVRAM=m

Tue, 29 Apr 2008 01:42:32 +0000

[POWERPC] Fix building of pmac32 when CONFIG_NVRAM=mKamalesh Babulal (kamalesh@linux.vnet.ibm.com) reports that CONFIG_NVRAM=mis valid in terms of Kconfig but fails to build with: Building modules, stage 2. MODPOST 1401 modulesERROR: "pmac_newworld" [arch/powerpc/platforms/powermac/nvram.ko] undefined!ERROR: "__alloc_bootmem" [arch/powerpc/platforms/powermac/nvram.ko] undefined!make[1]: *** [__modpost] ErrorThe arch/powerpc/platforms/powermac/nvram.c code really needs to bebuiltin, but as its compilation is dependent on a generic Kconfigsymbol we force nvram.c to be builtin if CONFIG_NVRAM is 'y' or 'm'.Signed-off-by: Tony Breeds Signed-off-by: Paul Mackerras List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

5b9ca526 - [PATCH] 3/5 powerpc: Add platform functions interpreter

Sat, 07 Jan 2006 00:41:02 +0000

[PATCH] 3/5 powerpc: Add platform functions interpreterThis is the platform function interpreter itself along with the backendsfor UniN/U3/U4, mac-io, GPIOs and i2c. It adds the ability to executethose do-platform-* scripts in the device-tree (at least for mostdevices for which a backend is provided). This should replace the clockspreading hacks properly. It might also have an impact on all sort ofmachines since some of the scripts marked "at init" will now be executedon boot (or some other on sleep/wakeup), those will possibly do thingsthat the kernel didn't do at all, like setting some values into some i2cdevices (changing thermal sensor calibration or conversion rate) etc...Thus regression testing is MUCH welcome. Also loook for errors in dmesg.That's also why I've left rather verbose debugging enabled in thisversion of the patch.(I do expect some Windtunnel G4s to show some errors as they have an i2cclock chip on the PMU bus that uses some primitives that the i2c backenddoesn't implement yet. I really need users that have one of thosemachine to come back to me so we can get that done right, though theerrors themselves should be harmless, I suspect the machine might notrun at full speed).Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

d7f39454 - [PATCH] powerpc: Add back support for booting from BootX (#2)

Wed, 23 Nov 2005 06:58:13 +0000

[PATCH] powerpc: Add back support for booting from BootX (#2)ARCH=powerpc couldn't boot from BootX as it uses a "different" way ofgetting in the kernel. This patch adds the necessary trampolines,creating a flattened device-tree from the tree passed from MacOS, andinitializing the btext engine early for really-early debugging.Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

51d3082f - [PATCH] powerpc: Unify udbg (#2)

Wed, 23 Nov 2005 06:57:25 +0000

[PATCH] powerpc: Unify udbg (#2)This patch unifies udbg for both ppc32 and ppc64 when building themerged achitecture. xmon now has a single "back end". The powermac udbgstuff gets enriched with some ADB capabilities and btext output. Inaddition, the early_init callback is now called on ppc32 as well,approx. in the same order as ppc64 regarding device-tree manipulations.The init sequences of ppc32 and ppc64 are getting closer, I'll unifythem in a later patch.For now, you can force udbg to the scc using "sccdbg" or to btext using"btextdbg" on powermacs. I'll implement a cleaner way of forcing udbgoutput to something else than the autodetected OF output device in alater patch.Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

4350147a - [PATCH] ppc64: SMU based macs cpufreq support

Mon, 07 Nov 2005 03:27:33 +0000

[PATCH] ppc64: SMU based macs cpufreq supportCPU freq support using 970FX powertune facility for iMac G5 and SMUbased single CPU desktop.Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

35499c01 - powerpc: Merge in 64-bit powermac support.

Sat, 22 Oct 2005 06:02:39 +0000

powerpc: Merge in 64-bit powermac support.This brings in a lot of changes from arch/ppc64/kernel/pmac_*.c toarch/powerpc/platforms/powermac/*.c and makes various minor tweakselsewhere. On the powermac we now initialize ppc_md by copyingthe whole pmac_md structure into it, which required some changes inthe ordering of initializations of individual fields of it.Signed-off-by: Paul Mackerras List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile

f6d57916 - powerpc: rename powermac files to remove pmac_ prefix

Mon, 10 Oct 2005 12:13:53 +0000

powerpc: rename powermac files to remove pmac_ prefixSince the files are now in arch/powerpc/platforms/powermac, thepmac_ prefix that they had is redundant.Signed-off-by: Paul Mackerras List of files: /linux-6.15/arch/powerpc/platforms/powermac/Makefile