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2023-02-15selftests/powerpc: Fix incorrect kernel headers search pathMathieu Desnoyers
Use $(KHDR_INCLUDES) as lookup path for kernel headers. This prevents building against kernel headers from the build environment in scenarios where kernel headers are installed into a specific output directory (O=...). Cc: stable@vger.kernel.org # v5.18+ Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20230127135755.79929-22-mathieu.desnoyers@efficios.com
2021-09-13selftests/powerpc: Add scv versions of the basic TM syscall testsNicholas Piggin
The basic TM vs syscall test code hard codes an sc instruction for the system call, which fails to cover scv even when the userspace libc has support for it. Duplicate the tests with hard coded scv variants so both are tested when possible. Signed-off-by: Nicholas Piggin <npiggin@gmail.com> [mpe: Fix build on old toolchains by using .long for scv] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210903125707.1601269-2-npiggin@gmail.com
2021-08-26selftests: Skip TM tests on synthetic TM implementationsJordan Niethe
Transactional Memory was removed from the architecture in ISA v3.1. For threads running in P8/P9 compatibility mode on P10 a synthetic TM implementation is provided. In this implementation, tbegin. always sets cr0 eq meaning the abort handler is always called. This is not an issue as users of TM are expected to have a fallback non transactional way to make forward progress in the abort handler. The TEXASR indicates if a transaction failure is due to a synthetic implementation. Some of the TM self tests need a non-degenerate TM implementation for their testing to be meaningful so check for a synthetic implementation and skip the test if so. Signed-off-by: Jordan Niethe <jniethe5@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210729041317.366612-2-jniethe5@gmail.com
2021-08-18selftests/powerpc: Remove duplicated include from tm-poison.cZheng Yongjun
Remove duplicated include. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210326064808.3262568-1-zhengyongjun3@huawei.com
2021-05-23selftests/powerpc: Fix duplicate included pthread.hJiapeng Chong
Clean up the following includecheck warning: ./tools/testing/selftests/powerpc/tm/tm-vmx-unavail.c: pthread.h is included more than once. No functional change. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1620903820-68213-1-git-send-email-jiapeng.chong@linux.alibaba.com
2021-03-29selftests/powerpc: unmark non-kernel-doc commentsRandy Dunlap
Drop the 'beginning of kernel-doc' notation markers (/**) in places that are not in kernel-doc format. Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reviewed-by: Daniel Axtens <dja@axtens.net> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20210325200820.16594-1-rdunlap@infradead.org
2020-09-08selftests/powerpc: Include asm/cputable.h from utils.hMichael Ellerman
utils.h provides have_hwcap() and have_hwcap2() which check for a feature bit. Those bits are defined in asm/cputable.h, so include it in utils.h so users of utils.h don't have to do it manually. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200819015727.1977134-4-mpe@ellerman.id.au
2020-09-08selftests/powerpc: Run tm-tmspr test for longerMichael Ellerman
This test creates some threads, which write to TM SPRs, and then makes sure the registers maintain the correct values across context switches and contention with other threads. But currently the test finishes almost instantaneously, which reduces the chance of it hitting an interesting condition. So increase the number of loops, so it runs a bit longer, though still less than 2s on a Power8. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200813013445.686464-3-mpe@ellerman.id.au
2020-09-08selftests/powerpc: Don't use setaffinity in tm-tmsprMichael Ellerman
This test tries to set affinity to CPUs that don't exist, especially if the set of online CPUs doesn't start at 0. But there's no real reason for it to use setaffinity in the first place, it's just trying to create lots of threads to cause contention. So drop the setaffinity entirely. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200813013445.686464-2-mpe@ellerman.id.au
2020-09-08selftests/powerpc: Fix TM tests when CPU 0 is offlineMichael Ellerman
Several of the TM tests fail spuriously if CPU 0 is offline, because they blindly try to affinitise to CPU 0. Fix them by picking any online CPU and using that instead. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200813013445.686464-1-mpe@ellerman.id.au
2020-04-09Merge tag 'powerpc-5.7-2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull more powerpc updates from Michael Ellerman: "The bulk of this is the series to make CONFIG_COMPAT user-selectable, it's been around for a long time but was blocked behind the syscall-in-C series. Plus there's also a few fixes and other minor things. Summary: - A fix for a crash in machine check handling on pseries (ie. guests) - A small series to make it possible to disable CONFIG_COMPAT, and turn it off by default for ppc64le where it's not used. - A few other miscellaneous fixes and small improvements. Thanks to: Alexey Kardashevskiy, Anju T Sudhakar, Arnd Bergmann, Christophe Leroy, Dan Carpenter, Ganesh Goudar, Geert Uytterhoeven, Geoff Levand, Mahesh Salgaonkar, Markus Elfring, Michal Suchanek, Nicholas Piggin, Stephen Boyd, Wen Xiong" * tag 'powerpc-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: selftests/powerpc: Always build the tm-poison test 64-bit powerpc: Improve ppc_save_regs() Revert "powerpc/64: irq_work avoid interrupt when called with hardware irqs enabled" powerpc/time: Replace <linux/clk-provider.h> by <linux/of_clk.h> powerpc/pseries/ddw: Extend upper limit for huge DMA window for persistent memory powerpc/perf: split callchain.c by bitness powerpc/64: Make COMPAT user-selectable disabled on littleendian by default. powerpc/64: make buildable without CONFIG_COMPAT powerpc/perf: consolidate valid_user_sp -> invalid_user_sp powerpc/perf: consolidate read_user_stack_32 powerpc: move common register copy functions from signal_32.c to signal.c powerpc: Add back __ARCH_WANT_SYS_LLSEEK macro powerpc/ps3: Set CONFIG_UEVENT_HELPER=y in ps3_defconfig powerpc/ps3: Remove an unneeded NULL check powerpc/ps3: Remove duplicate error message powerpc/powernv: Re-enable imc trace-mode in kernel powerpc/perf: Implement a global lock to avoid races between trace, core and thread imc events. powerpc/pseries: Fix MCE handling on pseries selftests/eeh: Skip ahci adapters powerpc/64s: Fix doorbell wakeup msgclr optimisation
2020-04-05Merge tag 'powerpc-5.7-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Slightly late as I had to rebase mid-week to insert a bug fix: - A large series from Nick for 64-bit to further rework our exception vectors, and rewrite portions of the syscall entry/exit and interrupt return in C. The result is much easier to follow code that is also faster in general. - Cleanup of our ptrace code to split various parts out that had become badly intertwined with #ifdefs over the years. - Changes to our NUMA setup under the PowerVM hypervisor which should hopefully avoid non-sensical topologies which can lead to warnings from the workqueue code and other problems. - MAINTAINERS updates to remove some of our old orphan entries and update the status of others. - Quite a few other small changes and fixes all over the map. Thanks to: Abdul Haleem, afzal mohammed, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V, Balamuruhan S, Cédric Le Goater, Chen Zhou, Christophe JAILLET, Christophe Leroy, Christoph Hellwig, Clement Courbet, Daniel Axtens, David Gibson, Douglas Miller, Fabiano Rosas, Fangrui Song, Ganesh Goudar, Gautham R. Shenoy, Greg Kroah-Hartman, Greg Kurz, Gustavo Luiz Duarte, Hari Bathini, Ilie Halip, Jan Kara, Joe Lawrence, Joe Perches, Kajol Jain, Larry Finger, Laurentiu Tudor, Leonardo Bras, Libor Pechacek, Madhavan Srinivasan, Mahesh Salgaonkar, Masahiro Yamada, Masami Hiramatsu, Mauricio Faria de Oliveira, Michael Neuling, Michal Suchanek, Mike Rapoport, Nageswara R Sastry, Nathan Chancellor, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nick Desaulniers, Oliver O'Halloran, Po-Hsu Lin, Pratik Rajesh Sampat, Rasmus Villemoes, Ravi Bangoria, Roman Bolshakov, Sam Bobroff, Sandipan Das, Santosh S, Sedat Dilek, Segher Boessenkool, Shilpasri G Bhat, Sourabh Jain, Srikar Dronamraju, Stephen Rothwell, Tyrel Datwyler, Vaibhav Jain, YueHaibing" * tag 'powerpc-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (158 commits) powerpc: Make setjmp/longjmp signature standard powerpc/cputable: Remove unnecessary copy of cpu_spec->oprofile_type powerpc: Suppress .eh_frame generation powerpc: Drop -fno-dwarf2-cfi-asm powerpc/32: drop unused ISA_DMA_THRESHOLD powerpc/powernv: Add documentation for the opal sensor_groups sysfs interfaces selftests/powerpc: Fix try-run when source tree is not writable powerpc/vmlinux.lds: Explicitly retain .gnu.hash powerpc/ptrace: move ptrace_triggered() into hw_breakpoint.c powerpc/ptrace: create ppc_gethwdinfo() powerpc/ptrace: create ptrace_get_debugreg() powerpc/ptrace: split out ADV_DEBUG_REGS related functions. powerpc/ptrace: move register viewing functions out of ptrace.c powerpc/ptrace: split out TRANSACTIONAL_MEM related functions. powerpc/ptrace: split out SPE related functions. powerpc/ptrace: split out ALTIVEC related functions. powerpc/ptrace: split out VSX related functions. powerpc/ptrace: drop PARAMETER_SAVE_AREA_OFFSET powerpc/ptrace: drop unnecessary #ifdefs CONFIG_PPC64 powerpc/ptrace: remove unused header includes ...
2020-04-04selftests/powerpc: Always build the tm-poison test 64-bitMichael Ellerman
The tm-poison test includes inline asm which is 64-bit only, so the test must be built 64-bit in order to work. Otherwise it fails, eg: # file tm-poison tm-poison: ELF 32-bit MSB executable, PowerPC or cisco 4500, version 1 (SYSV) ... # ./tm-poison test: tm_poison_test Unknown value 0x1fff71150 leaked into f31! Unknown value 0x1fff710c0 leaked into vr31! failure: tm_poison_test Fixes: a003365cab64 ("powerpc/tm: Add tm-poison test") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200403095656.3772005-1-mpe@ellerman.id.au
2020-03-25.gitignore: add SPDX License IdentifierMasahiro Yamada
Add SPDX License Identifier to all .gitignore files. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-25selftests/powerpc: Turn off timeout setting for benchmarks, dscr, signal, tmPo-Hsu Lin
Some specific tests in powerpc can take longer than the default 45 seconds that added in commit 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second timeout per test") to run, the following test result was collected across 2 Power8 nodes and 1 Power9 node in our pool: powerpc/benchmarks/futex_bench - 52s powerpc/dscr/dscr_sysfs_test - 116s powerpc/signal/signal_fuzzer - 88s powerpc/tm/tm_unavailable_test - 168s powerpc/tm/tm-poison - 240s Thus they will fail with TIMEOUT error. Disable the timeout setting for these sub-tests to allow them finish properly. https://bugs.launchpad.net/bugs/1864642 Fixes: 852c8cbf34d3 ("selftests/kselftest/runner.sh: Add 45 second timeout per test") Signed-off-by: Po-Hsu Lin <po-hsu.lin@canonical.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200318060004.10685-1-po-hsu.lin@canonical.com
2020-03-25selftests/powerpc: Don't rely on segfault to rerun the testGustavo Luiz Duarte
The test case tm-signal-context-force-tm expects a segfault to happen on returning from signal handler, and then does a setcontext() to run the test again. However, the test doesn't always segfault, causing the test to run a single time. This patch fixes the test by putting it within a loop and jumping, via setcontext, just prior to the loop in case it segfaults. This way we get the desired behavior (run the test COUNT_MAX times) regardless if it segfaults or not. This also reduces the use of setcontext for control flow logic, keeping it only in the segfault handler. Also, since 'count' is changed within the signal handler, it is declared as volatile to prevent any compiler optimization getting confused with asynchronous changes. Signed-off-by: Gustavo Luiz Duarte <gustavold@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200211033831.11165-3-gustavold@linux.ibm.com
2020-03-20selftests/powerpc: Add tm-signal-pagefault testGustavo Luiz Duarte
This test triggers a TM Bad Thing by raising a signal in transactional state and forcing a pagefault to happen in kernelspace when the kernel signal handling code first touches the user signal stack. This is inspired by the test tm-signal-context-force-tm but uses userfaultfd to make the test deterministic. While this test always triggers the bug in one run, I had to execute tm-signal-context-force-tm several times (the test runs 5000 times each execution) to trigger the same bug. tm-signal-context-force-tm is kept instead of replaced because, while this test is more reliable and triggers the same bug, tm-signal-context-force-tm has a better coverage, in the sense that by running the test several times it might trigger the pagefault and/or be preempted at different places. v3: skip test if userfaultfd is unavailable. Signed-off-by: Gustavo Luiz Duarte <gustavold@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20200211033831.11165-2-gustavold@linux.ibm.com
2019-11-05selftests/powerpc: Skip tm-signal-sigreturn-nt if TM not availableMichael Ellerman
On systems where TM (Transactional Memory) is disabled the tm-signal-sigreturn-nt test causes a SIGILL: test: tm_signal_sigreturn_nt tags: git_version:7c202575ef63 !! child died by signal 4 failure: tm_signal_sigreturn_nt We should skip the test if TM is not available. Fixes: 34642d70ac7e ("selftests/powerpc: Add checks for transactional sigreturn") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20191104233524.24348-1-mpe@ellerman.id.au
2019-09-21powerpc/tm: Add tm-poison testGustavo Romero
Add TM selftest to check if FP or VEC register values from one process can leak into another process when both run on the same CPU. Signed-off-by: Gustavo Romero <gromero@linux.ibm.com> Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190904045529.23002-3-gromero@linux.vnet.ibm.com
2019-08-26selftests/powerpc: Retry on host facility unavailableGustavo Romero
TM test tm-unavailable must take into account aborts due to host aborting a transactin because of a facility unavailable exception, just like it already does for aborts on reschedules (TM_CAUSE_KVM_RESCHED). Reported-by: Desnes A. Nunes do Rosario <desnesn@linux.ibm.com> Tested-by: Desnes A. Nunes do Rosario <desnesn@linux.ibm.com> Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1566341651-19747-1-git-send-email-gromero@linux.vnet.ibm.com
2019-08-26selftests/powerpc: Fix and enhance TM signal context testsGustavo Romero
Currently TM signal context tests for GPR, FPR, VMX, and VSX registers print wrong register numbers (wrongly starting from register 0 instead of the first register in the non-volatile subset). Besides it the output when a mismatch happens is poor giving not much information about which context and which register mismatches, because it prints both contexts at the same time and not a comparison between the value that mismatches and the value expected and, moreover, it stops printing on the first mismatch, but it's important to know if there are other mismatches happening beyond the first one. For instance, this is the current output when a mismatch happens: test: tm_signal_context_chk_gpr tags: git_version:v5.2-8249-g02e970fae465-dirty Failed on 0 GPR 1 or 18446744073709551615 failure: tm_signal_context_chk_gpr test: tm_signal_context_chk_fpu tags: git_version:v5.2-8248-g09c289e3ef80 Failed on 0 FP -1 or -1 failure: tm_signal_context_chk_fpu test: tm_signal_context_chk_vmx tags: git_version:v5.2-8248-g09c289e3ef80 Failed on 0 vmx 0xfffffffffffffffefffffffdfffffffc vs 0xfffffffffffffffefffffffdfffffffc failure: tm_signal_context_chk_vmx test: tm_signal_context_chk_vsx tags: git_version:v5.2-8248-g09c289e3ef80 Failed on 0 vsx 0xfffffffffefffffffdfffffffcffffff vs 0xfffffffffefffffffdfffffffcffffff failure: tm_signal_context_chk_vsx This commit fixes the register numbers printed and enhances the error output by providing a full list of mismatching registers separated by the context (non-speculative or speculative context), for example: test: tm_signal_context_chk_gpr tags: git_version:v5.2-8249-g02e970fae465-dirty GPR14 (1st context) == 1 instead of -1 (expected) GPR15 (1st context) == 2 instead of -2 (expected) GPR14 (2nd context) == 0 instead of 18446744073709551615 (expected) GPR15 (2nd context) == 0 instead of 18446744073709551614 (expected) failure: tm_signal_context_chk_gpr test: tm_signal_context_chk_fpu tags: git_version:v5.2-8249-g02e970fae465-dirty FPR14 (1st context) == -1 instead of 1 (expected) FPR15 (1st context) == -2 instead of 2 (expected) failure: tm_signal_context_chk_fpu test: tm_signal_context_chk_vmx tags: git_version:v5.2-8249-g02e970fae465-dirty VMX20 (1st context) == 0xfffffffffffffffefffffffdfffffffc instead of 0x00000001000000020000000300000004 (expected) VMX21 (1st context) == 0xfffffffbfffffffafffffff9fffffff8 instead of 0x00000005000000060000000700000008 (expected) failure: tm_signal_context_chk_vmx test: tm_signal_context_chk_vsx tags: git_version:v5.2-8249-g02e970fae465-dirty VSX20 (1st context) == 0xfffffffffefffffffdfffffffcffffff instead of 0x00000001000000020000000300000004 (expected) VSX21 (1st context) == 0xfbfffffffafffffff9fffffff8ffffff instead of 0x00000005000000060000000700000008 (expected) failure: tm_signal_context_chk_vsx Finally, this commit adds comments to the tests in the hope that it will help people not so familiar with TM understand the tests. Signed-off-by: Gustavo Romero <gromero@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/20190814205211.24840-1-gromero@linux.ibm.com
2019-07-13Merge tag 'powerpc-5.3-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Notable changes: - Removal of the NPU DMA code, used by the out-of-tree Nvidia driver, as well as some other functions only used by drivers that haven't (yet?) made it upstream. - A fix for a bug in our handling of hardware watchpoints (eg. perf record -e mem: ...) which could lead to register corruption and kernel crashes. - Enable HAVE_ARCH_HUGE_VMAP, which allows us to use large pages for vmalloc when using the Radix MMU. - A large but incremental rewrite of our exception handling code to use gas macros rather than multiple levels of nested CPP macros. And the usual small fixes, cleanups and improvements. Thanks to: Alastair D'Silva, Alexey Kardashevskiy, Andreas Schwab, Aneesh Kumar K.V, Anju T Sudhakar, Anton Blanchard, Arnd Bergmann, Athira Rajeev, Cédric Le Goater, Christian Lamparter, Christophe Leroy, Christophe Lombard, Christoph Hellwig, Daniel Axtens, Denis Efremov, Enrico Weigelt, Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Geliang Tang, Gen Zhang, Greg Kroah-Hartman, Greg Kurz, Gustavo Romero, Krzysztof Kozlowski, Madhavan Srinivasan, Masahiro Yamada, Mathieu Malaterre, Michael Neuling, Nathan Lynch, Naveen N. Rao, Nicholas Piggin, Nishad Kamdar, Oliver O'Halloran, Qian Cai, Ravi Bangoria, Sachin Sant, Sam Bobroff, Satheesh Rajendran, Segher Boessenkool, Shaokun Zhang, Shawn Anastasio, Stewart Smith, Suraj Jitindar Singh, Thiago Jung Bauermann, YueHaibing" * tag 'powerpc-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (163 commits) powerpc/powernv/idle: Fix restore of SPRN_LDBAR for POWER9 stop state. powerpc/eeh: Handle hugepages in ioremap space ocxl: Update for AFU descriptor template version 1.1 powerpc/boot: pass CONFIG options in a simpler and more robust way powerpc/boot: add {get, put}_unaligned_be32 to xz_config.h powerpc/irq: Don't WARN continuously in arch_local_irq_restore() powerpc/module64: Use symbolic instructions names. powerpc/module32: Use symbolic instructions names. powerpc: Move PPC_HA() PPC_HI() and PPC_LO() to ppc-opcode.h powerpc/module64: Fix comment in R_PPC64_ENTRY handling powerpc/boot: Add lzo support for uImage powerpc/boot: Add lzma support for uImage powerpc/boot: don't force gzipped uImage powerpc/8xx: Add microcode patch to move SMC parameter RAM. powerpc/8xx: Use IO accessors in microcode programming. powerpc/8xx: replace #ifdefs by IS_ENABLED() in microcode.c powerpc/8xx: refactor programming of microcode CPM params. powerpc/8xx: refactor printing of microcode patch name. powerpc/8xx: Refactor microcode write powerpc/8xx: refactor writing of CPM microcode arrays ...
2019-06-19selftests/powerpc: Fix earlyclobber in tm-vmxcopyGustavo Romero
In some cases, compiler can allocate the same register for operand 'res' and 'vecoutptr', resulting in segfault at 'stxvd2x 40,0,%[vecoutptr]' because base register will contain 1, yielding a false-positive. This is because output 'res' must be marked as an earlyclobber operand so it may not overlap an input operand ('vecoutptr'). Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com> Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191Thomas Gleixner
Based on 1 normalized pattern(s): licensed under gplv2 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-only has been chosen to replace the boilerplate/reference in 99 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Alexios Zavras <alexios.zavras@intel.com> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Steve Winslow <swinslow@gmail.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190528170027.163048684@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-30treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-15selftests/powerpc: New TM signal self testBreno Leitao
A new self test that forces MSR[TS] to be set without calling any TM instruction. This test also tries to cause a page fault at a signal handler, exactly between MSR[TS] set and tm_recheckpoint(), forcing thread->texasr to be rewritten with TEXASR[FS] = 0, which will cause a BUG when tm_recheckpoint() is called. This test is not deterministic, since it is hard to guarantee that the page access will cause a page fault. In order to force more page faults at signal context, the signal handler and the ucontext are being mapped into a MADV_DONTNEED memory chunks. Tests have shown that the bug could be exposed with few interactions in a buggy kernel. This test is configured to loop 5000x, having a good chance to hit the kernel issue in just one run. This self test takes less than two seconds to run. This test uses set/getcontext because the kernel will recheckpoint zeroed structures, causing the test to segfault, which is undesired because the test needs to rerun, so, there is a signal handler for SIGSEGV which will restart the test. v2: Uses the MADV_DONTNEED memory advice v3: Fix memcpy and 32-bits compilation v4: Does not define unused macros Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-12-21selftests/powerpc: Add checks for transactional sigreturnBreno Leitao
This is a new test case that creates a signal and starts a suspended transaction inside the signal handler. It returns from the signal handler with the CPU at suspended state, but without setting user context MSR Transaction State (TS) field. The kernel signal handler code should be able to handle this discrepancy instead of crashing. This code could be compiled and used to test 32 and 64-bits signal handlers. Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-10-09Merge branch 'fixes' into nextMichael Ellerman
Merge our fixes branch. It has a few important fixes that are needed for futher testing and also some commits that will conflict with content in next.
2018-09-28selftests/powerpc: Fix Makefiles for headers_install changeMichael Ellerman
Commit b2d35fa5fc80 ("selftests: add headers_install to lib.mk") introduced a requirement that Makefiles more than one level below the selftests directory need to define top_srcdir, but it didn't update any of the powerpc Makefiles. This broke building all the powerpc selftests with eg: make[1]: Entering directory '/src/linux/tools/testing/selftests/powerpc' BUILD_TARGET=/src/linux/tools/testing/selftests/powerpc/alignment; mkdir -p $BUILD_TARGET; make OUTPUT=$BUILD_TARGET -k -C alignment all make[2]: Entering directory '/src/linux/tools/testing/selftests/powerpc/alignment' ../../lib.mk:20: ../../../../scripts/subarch.include: No such file or directory make[2]: *** No rule to make target '../../../../scripts/subarch.include'. make[2]: Failed to remake makefile '../../../../scripts/subarch.include'. Makefile:38: recipe for target 'alignment' failed Fix it by setting top_srcdir in the affected Makefiles. Fixes: b2d35fa5fc80 ("selftests: add headers_install to lib.mk") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-09-19selftests/powerpc: Do not fail with rescheduleBreno Leitao
There are cases where the test is not expecting to have the transaction aborted, but, the test process might have been rescheduled, either in the OS level or by KVM (if it is running on a KVM guest machine). The process reschedule will cause a treclaim/recheckpoint which will cause the transaction to doom, aborting the transaction as soon as the process is rescheduled back to the CPU. This might cause the test to fail, but this is not a failure in essence. If that is the case, TEXASR[FC] is indicated with either TM_CAUSE_RESCHEDULE or TM_CAUSE_KVM_RESCHEDULE for KVM interruptions. In this scenario, ignore these two failures and avoid the whole test to return failure. Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Gustavo Romero <gromero@linux.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-09-17powerpc/selftests: Wait all threads to joinBreno Leitao
Test tm-tmspr might exit before all threads stop executing, because it just waits for the very last thread to join before proceeding/exiting. This patch makes sure that all threads that were created will join before proceeding/exiting. This patch also guarantees that the amount of threads being created is equal to thread_num. Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-08-07selftests/powerpc: Only run some tests on ppc64leMichael Ellerman
These tests are currently failing on (some) big endian systems. Until we can fix that, skip them unless we're on ppc64le. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-05-25selftests/powerpc: Add missing .gitignoresMichael Neuling
Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-28Merge branch 'fixes' into nextMichael Ellerman
Merge our fixes branch from the 4.16 cycle. There were a number of important fixes merged, in particular some Power9 workarounds that we want in next for testing purposes. There's also been some conflicting changes in the CPU features code which are best merged and tested before going upstream.
2018-03-13selftests/powerpc: Skip tm-unavailable if TM is not enabledGustavo Romero
Some processor revisions do not support transactional memory, and additionally kernel support can be disabled. In either case the tm-unavailable test should be skipped, otherwise it will fail with a SIGILL. That commit also sets this selftest to be called through the test harness as it's done for other TM selftests. Finally, it avoids using "ping" as a thread name since it's ambiguous and can be confusing when shown, for instance, in a kernel backtrace log. Fixes: 77fad8bfb1d2 ("selftests/powerpc: Check FP/VEC on exception in TM") Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com> Reviewed-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-03-13selftest/powerpc: Add test for sigreturn in transactionLaurent Dufour
Ensure that kernel is throwing away the suspended transaction when sigreturn() is called otherwise it if fails to restore the signal frame's TM SPRS. Signed-off-by: Laurent Dufour <ldufour@linux.vnet.ibm.com> Reviewed-by: Cyril Bur <cyrilbur@gmail.com> [mpe: Add have_htm() check, minor formatting, add SPDX tag] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-02-28selftests/powerpc: Fix missing clean of pmu/lib.oMichael Ellerman
The tm-resched-dscr test links against pmu/lib.o, but we don't have a rule to clean pmu/lib.o. This can lead to a build break if you build for big endian and then little, or vice versa. Fix it by making tm-resched-dscr depend on pmu/lib.c, causing the code to be built directly in, meaning no .o is generated. Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-02-26selftests/powerpc: Skip tm-trap if transactional memory is not enabledMichael Ellerman
Some processor revisions do not support transactional memory, and additionally kernel support can be disabled. In either case the tm-trap test should be skipped, otherwise it will fail with a SIGILL. Fixes: a08082f8e4e1 ("powerpc/selftests: Check endianness on trap in TM") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2018-01-22powerpc/selftests: Check endianness on trap in TMGustavo Romero
Add a selftest to check if endianness is flipped inadvertently to BE (MSR.LE set to zero) on BE and LE machines when a trap is caught in transactional mode and load_fp and load_vec are zero, i.e. when MSR.FP and MSR.VEC are zeroed (disabled). Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-12-04selftests/powerpc: Check for pthread errors in tm-unavailableCyril Bur
Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-11-16Merge tag 'powerpc-4.15-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "A bit of a small release, I suspect in part due to me travelling for KS. But my backlog of patches to review is smaller than usual, so I think in part folks just didn't send as much this cycle. Non-highlights: - Five fixes for the >128T address space handling, both to fix bugs in our implementation and to bring the semantics exactly into line with x86. Highlights: - Support for a new OPAL call on bare metal machines which gives us a true NMI (ie. is not masked by MSR[EE]=0) for debugging etc. - Support for Power9 DD2 in the CXL driver. - Improvements to machine check handling so that uncorrectable errors can be reported into the generic memory_failure() machinery. - Some fixes and improvements for VPHN, which is used under PowerVM to notify the Linux partition of topology changes. - Plumbing to enable TM (transactional memory) without suspend on some Power9 processors (PPC_FEATURE2_HTM_NO_SUSPEND). - Support for emulating vector loads form cache-inhibited memory, on some Power9 revisions. - Disable the fast-endian switch "syscall" by default (behind a CONFIG), we believe it has never had any users. - A major rework of the API drivers use when initiating and waiting for long running operations performed by OPAL firmware, and changes to the powernv_flash driver to use the new API. - Several fixes for the handling of FP/VMX/VSX while processes are using transactional memory. - Optimisations of TLB range flushes when using the radix MMU on Power9. - Improvements to the VAS facility used to access coprocessors on Power9, and related improvements to the way the NX crypto driver handles requests. - Implementation of PMEM_API and UACCESS_FLUSHCACHE for 64-bit. Thanks to: Alexey Kardashevskiy, Alistair Popple, Allen Pais, Andrew Donnellan, Aneesh Kumar K.V, Arnd Bergmann, Balbir Singh, Benjamin Herrenschmidt, Breno Leitao, Christophe Leroy, Christophe Lombard, Cyril Bur, Frederic Barrat, Gautham R. Shenoy, Geert Uytterhoeven, Guilherme G. Piccoli, Gustavo Romero, Haren Myneni, Joel Stanley, Kamalesh Babulal, Kautuk Consul, Markus Elfring, Masami Hiramatsu, Michael Bringmann, Michael Neuling, Michal Suchanek, Naveen N. Rao, Nicholas Piggin, Oliver O'Halloran, Paul Mackerras, Pedro Miraglia Franco de Carvalho, Philippe Bergheaud, Sandipan Das, Seth Forshee, Shriya, Stephen Rothwell, Stewart Smith, Sukadev Bhattiprolu, Tyrel Datwyler, Vaibhav Jain, Vaidyanathan Srinivasan, and William A. Kennington III" * tag 'powerpc-4.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (151 commits) powerpc/64s: Fix Power9 DD2.0 workarounds by adding DD2.1 feature powerpc/64s: Fix masking of SRR1 bits on instruction fault powerpc/64s: mm_context.addr_limit is only used on hash powerpc/64s/radix: Fix 128TB-512TB virtual address boundary case allocation powerpc/64s/hash: Allow MAP_FIXED allocations to cross 128TB boundary powerpc/64s/hash: Fix fork() with 512TB process address space powerpc/64s/hash: Fix 128TB-512TB virtual address boundary case allocation powerpc/64s/hash: Fix 512T hint detection to use >= 128T powerpc: Fix DABR match on hash based systems powerpc/signal: Properly handle return value from uprobe_deny_signal() powerpc/fadump: use kstrtoint to handle sysfs store powerpc/lib: Implement UACCESS_FLUSHCACHE API powerpc/lib: Implement PMEM API powerpc/powernv/npu: Don't explicitly flush nmmu tlb powerpc/powernv/npu: Use flush_all_mm() instead of flush_tlb_mm() powerpc/powernv/idle: Round up latency and residency values powerpc/kprobes: refactor kprobe_lookup_name for safer string operations powerpc/kprobes: Blacklist emulate_update_regs() from kprobes powerpc/kprobes: Do not disable interrupts for optprobes and kprobes_on_ftrace powerpc/kprobes: Disable preemption before invoking probe handler for optprobes ...
2017-11-09selftests/powerpc: Check FP/VEC on exception in TMGustavo Romero
Add a self test to check if FP/VEC/VSX registers are sane (restored correctly) after a FP/VEC/VSX unavailable exception is caught during a transaction. This test checks all possibilities in a thread regarding the combination of MSR.[FP|VEC] states in a thread and for each scenario raises a FP/VEC/VSX unavailable exception in transactional state, verifying if vs0 and vs32 registers, which are representatives of FP/VEC/VSX reg sets, are not corrupted. Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com> Signed-off-by: Breno Leitao <leitao@debian.org> Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman
Many source files in the tree are missing licensing information, which makes it harder for compliance tools to determine the correct license. By default all files without license information are under the default license 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 binding shorthand, which can be used instead of the full boiler plate text. This patch is based on work done by Thomas Gleixner and Kate Stewart and Philippe Ombredanne. How this work was done: Patches were generated and checked against linux-4.14-rc6 for a subset of the 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 cases where non-standard license headers were used, and references to license had to be inferred by heuristics based on keywords. The analysis to determine which SPDX License Identifier to be applied to a file was done in a spreadsheet of side by side results from of the output of two independent scanners (ScanCode & Windriver) producing SPDX tag:value files created by Philippe Ombredanne. Philippe prepared the base 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 files assessed. Kate Stewart did a file by file comparison of the scanner results in the spreadsheet to determine which SPDX license identifier(s) to be applied to the file. She confirmed any determination that was not immediately 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 license identifiers 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 the spreadsheet to determine the SPDX license identifiers to apply to the source files by Kate, Philippe, Thomas and, in some cases, confirmation by lawyers working with the Linux Foundation. Kate also obtained a third independent scan of the 4.13 code base from FOSSology, and compared selected files where the other two scanners disagreed against that SPDX file, to see if there was new insights. The Windriver scanner is based on an older version of FOSSology in part, so they are related. Thomas did random spot checks in about 500 files from the spreadsheets for the uapi headers and agreed with SPDX license identifier in the files he inspected. For the non-uapi files Thomas did random spot checks in about 15000 files. In initial set of patches against 4.14-rc6, 3 files were found to have copy/paste license identifier errors, and have been fixed to reflect the correct identifier. Additionally Philippe spent 10 hours this week doing a detailed manual inspection and review of the 12,461 patched files from the initial patch version 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 correct This produced a worksheet with 20 files needing minor correction. This worksheet was then exported into 3 different .csv files for the different types of files to be modified. These .csv files were then reviewed by Greg. Thomas wrote a script to parse the csv files and add the proper SPDX tag to the file, in the format that the file expected. This script was further refined by Greg based on the output to detect more types of files automatically and to distinguish between header and source .c files (which need different comment types.) Finally Greg ran the script using the .csv files to generate the patches. Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-08-17selftests/powerpc: Improve tm-resched-dscrSam Bobroff
The tm-resched-dscr self test can, in some situations, run for several minutes before being successfully interrupted by the context switch it needs in order to perform the test. This often seems to occur when the test is being run in a virtual machine. Improve the test by running it under eat_cpu() to guarantee contention for the CPU and increase the chance of a context switch. In practice this seems to reduce the test time, in some cases, from more than two minutes to under a second. Also remove the "progress dots" so that if the test does run for a long time, it doesn't produce large amounts of unnecessary output. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-05-19selftests/powerpc: Fix TM resched DSCR test with some compilersMichael Ellerman
The tm-resched-dscr test has started failing sometimes, depending on what compiler it's built with, eg: test: tm_resched_dscr Check DSCR TM context switch: tm-resched-dscr: tm-resched-dscr.c:76: test_body: Assertion `rv' failed. !! child died by signal 6 When it fails we see that the compiler doesn't initialise rv to 1 before entering the inline asm block. Although that's counter intuitive, it is allowed because we tell the compiler that the inline asm will write to rv (using "=r"), meaning the original value is irrelevant. Marking it as a read/write parameter would presumably work, but it seems simpler to fix it by setting the initial value of rv in the inline asm. Fixes: 96d016108640 ("powerpc: Correct DSCR during TM context switch") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Acked-by: Michael Neuling <mikey@neuling.org>
2017-05-16selftests/powerpc: Test TM and VMX register stateMichael Neuling
Test that the VMX checkpointed register state is maintained when a VMX unavailable exception is taken during a transaction. Thanks to Breno Leitao <brenohl@br.ibm.com> and Gustavo Bueno Romero <gromero@br.ibm.com> for the original test this is based heavily on. Signed-off-by: Michael Neuling <mikey@neuling.org> Reviewed-by: Cyril Bur <cyrilbur@gmail.com> [mpe: Add to .gitignore, always build it 64-bit to fix build errors] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-02-14selftests/powerpc: Fix remaining fallout from recent changesMichael Ellerman
In benchmarks we need to use $(TEST_GEN_PROGS) after we include lib.mk, because lib.mk does the substitution to add $(OUTPUT). In math the vmx and fpu names were typoed so they no longer matched correctly, put back the 'v' and 'f'. In tm we need to substitute $(OUTPUT) into SIGNAL_CONTEXT_CHK_TESTS so that the rule matches. In pmu there is an extraneous ':' on the end of $$BUILD_TARGET for the clean and install rules, which breaks the logic in the child Makefiles. Fixes: a8ba798bc8ec ("selftests: enable O and KBUILD_OUTPUT") Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-05selftests: enable O and KBUILD_OUTPUTbamvor.zhangjian@huawei.com
Enable O and KBUILD_OUTPUT for kselftest. User could compile kselftest to another directory by passing O or KBUILD_OUTPUT. And O is high priority than KBUILD_OUTPUT. Signed-off-by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2017-01-05selftests: remove duplicated all and clean targetbamvor.zhangjian@huawei.com
Currently, kselftest use TEST_PROGS, TEST_PROGS_EXTENDED, TEST_FILES to indicate the test program, extended test program and test files. It is easy to understand the purpose of these files. But mix of compiled and uncompiled files lead to duplicated "all" and "clean" targets. In order to remove the duplicated targets, introduce TEST_GEN_PROGS, TEST_GEN_PROGS_EXTENDED, TEST_GEN_FILES to indicate the compiled objects. Also, the later patch will make use of TEST_GEN_XXX to redirect these files to output directory indicated by KBUILD_OUTPUT or O. And add this changes to "Contributing new tests(details)" of Documentation/kselftest.txt. Signed-off-by: Bamvor Jian Zhang <bamvor.zhangjian@linaro.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2016-11-17selftests/powerpc: Move shared headers into new include dirSimon Guo
There are some functions, especially register related, which can be shared across multiple selftests/powerpc test directories. This patch creates a new include directory to store those shared files, so that the file layout becomes more neat. Signed-off-by: Simon Guo <wei.guo.simon@gmail.com> [mpe: Reworked to move the headers only] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>