blackbird-op-linux/tools/testing/selftests/powerpc/copyloops, branch master

seltests/powerpc: Add a selftest for memcpy_mcsafe

2019-09-11T23:27:00+00:00

Appropriate self tests for memcpy_mcsafe Suggested-by: Michael Ellerman Signed-off-by: Santosh Sivaraj Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190903214359.23887-2-santosh@fossix.org

selftests/powerpc: Ignore generated files

2019-08-22T13:12:47+00:00

Currently some binary files which are generated when tests are compiled are not ignored by git, so 'git status' catch them. For copyloops test, fix wrong binary names already in .gitignore. For ptrace, security, and stringloops tests add missing binary names to the .gitignore file. Signed-off-by: Gustavo Romero Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190814205638.25322-2-gromero@linux.ibm.com

powerpc: prepare string/mem functions for KASAN

2019-05-02T15:20:25+00:00

CONFIG_KASAN implements wrappers for memcpy() memmove() and memset() Those wrappers are doing the verification then call respectively __memcpy() __memmove() and __memset(). The arches are therefore expected to rename their optimised functions that way. For files on which KASAN is inhibited, #defines are used to allow them to directly call optimised versions of the functions without going through the KASAN wrappers. See commit 393f203f5fd5 ("x86_64: kasan: add interceptors for memset/memmove/memcpy functions") for details. Other string / mem functions do not (yet) have kasan wrappers, we therefore have to fallback to the generic versions when KASAN is active, otherwise KASAN checks will be skipped. Signed-off-by: Christophe Leroy [mpe: Fixups to keep selftests working] Signed-off-by: Michael Ellerman

selftests/powerpc: Fix Makefiles for headers_install change

2018-09-28T05:07:45+00:00

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

selftests/powerpc/64: Test exception cases in copy_tofrom_user

2018-08-07T14:32:35+00:00

This adds a set of test cases to test the behaviour of copy_tofrom_user when exceptions are encountered accessing the source or destination. Currently, copy_tofrom_user does not always copy as many bytes as possible when an exception occurs on a store to the destination, and that is reflected in failures in these tests. Based on a test program from Anton Blanchard. [paulus@ozlabs.org - test all three paths, wrote commit description, made EX_TABLE create an exception table.] Signed-off-by: Paul Mackerras Signed-off-by: Michael Ellerman

selftests/powerpc/64: Test all paths through copy routines

2018-08-07T14:32:35+00:00

The hand-coded assembler 64-bit copy routines include feature sections that select one code path or another depending on which CPU we are executing on. The self-tests for these copy routines end up testing just one path. This adds a mechanism for selecting any desired code path at compile time, and makes 2 or 3 versions of each test, each using a different code path, so as to cover all the possible paths. Signed-off-by: Paul Mackerras [mpe: Add -mcpu=power4 to CFLAGS for older compilers] Signed-off-by: Michael Ellerman

powerpc: clean inclusions of asm/feature-fixups.h

2018-07-30T12:48:17+00:00

files not using feature fixup don't need asm/feature-fixups.h files using feature fixup need asm/feature-fixups.h Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman

powerpc: move ASM_CONST and stringify_in_c() into asm-const.h

2018-07-30T12:48:16+00:00

This patch moves ASM_CONST() and stringify_in_c() into dedicated asm-const.h, then cleans all related inclusions. Signed-off-by: Christophe Leroy [mpe: asm-compat.h should include asm-const.h] Signed-off-by: Michael Ellerman

selftests/powerpc: Update memcmp_64 selftest for VMX implementation

2018-07-24T12:03:22+00:00

This patch reworked selftest memcmp_64 so that memcmp selftest can cover more test cases. It adds testcases for: - memcmp over 4K bytes size. - s1/s2 with different/random offset on 16 bytes boundary. - enter/exit_vmx_ops pairness. Signed-off-by: Simon Guo [mpe: Add -maltivec to fix build on some toolchains] Signed-off-by: Michael Ellerman

selftests/powerpc: Fix copyloops build since Power4 assembler change

2018-04-03T11:50:09+00:00

The recent commit 15a3204d24a3 ("powerpc/64s: Set assembler machine type to POWER4") set the machine type in our ASFLAGS when building the kernel, and removed some ".machine power4" directives from various asm files. This broke the selftests build on old toolchains (that don't assume Power4), because we build the kernel source files into the selftests using different ASFLAGS. The fix is simply to add -mpower4 to the selftest ASFLAGS as well. Fixes: 15a3204d24a3 ("powerpc/64s: Set assembler machine type to POWER4") Signed-off-by: Michael Ellerman