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kselftest/arm64: Add coverage of the ZT ptrace regset Add coverage of the ZT ptrace interface. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20221208-arm64-sme2-v4-20-f2fa0aef982f@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
kselftest/arm64: Convert za-fork to use kselftest.h Now that kselftest.h can be used with nolibc convert the za-fork test to use it. We do still have to open code ksft_print_msg() but that's not the end of the world. Some of the advantage comes from using printf() which we could have been using already. This does change the output when tests are skipped, bringing it in line with the standard kselftest output by removing the test name - we move from ok 0 skipped to ok 1 # SKIP fork_test The old output was not following KTAP format for skips, and the numbering was not standard or consistent with the reported plan. Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org> | 3 年前 | |
selftests: arm64: Add build and documentation for FP tests Integrate the FP tests with the build system and add some documentation for the ones run outside the kselftest infrastructure. The content in the README was largely written by Dave Martin with edits by me. Signed-off-by: Mark Brown <broonie@kernel.org> Acked-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Link: https://lore.kernel.org/r/20200819114837.51466-7-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> | 5 年前 | |
selftests: arm64: More comprehensively test the SVE ptrace interface Currently the selftest for the SVE register set is not quite as thorough as is desirable - it only validates that the value of a single Z register is not modified by a partial write to a lower numbered Z register after having previously been set through the FPSIMD regset. Make this more thorough: - Test the ability to set vector lengths and enumerate those supported in the system. - Validate data in all Z and P registers, plus FPSR and FPCR. - Test reads via the FPSIMD regset after set via the SVE regset. There's still some oversights, the main one being that due to the need to generate a pattern in FFR and the fact that this rewrite is primarily motivated by SME's streaming SVE which doesn't have FFR we don't currently test FFR. Update the TODO to reflect those that occurred to me (and fix an adjacent typo in there). Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20210913125505.52619-8-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> | 4 年前 | |
kselftest/arm64: Count SIGUSR2 deliveries in FP stress tests Currently the floating point stress tests mostly support testing that the data they are checking can be disrupted from a signal handler triggered by SIGUSR1. This is not properly implemented for all the tests and in testing is frequently modified to just handle the signal without corrupting data in order to ensure that signal handling does not corrupt data. Directly support this usage by installing a SIGUSR2 handler which simply counts the signal delivery. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20220829154452.824870-3-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
selftests: arm64: Factor out utility functions for assembly FP tests The various floating point test programs written in assembly have a bunch of helper functions and macros which are cut'n'pasted between them. Factor them out into a separate source file which is linked into all of them. We don't include memcmp() since it isn't as generic as it should be and directly branches to report an error in the programs. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20211019181851.3341232-1-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> | 4 年前 | |
kselftest/arm64: Fix .pushsection for strings in FP tests The .pushsection directive used to store the strings used with the .puts macro in the floating point helpers does not provide a section type but according to the gas documentation this should be mandatory and with the clang built in as it actually is. Provide one so that we can build these tests with LLVM=1. No functional change. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Link: https://lore.kernel.org/r/20230111-arm64-kselftest-clang-v1-1-89c69d377727@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
kselftest/arm64: Remove redundant _start labels from FP tests There are a number of freestanding static executables used in floating point testing that have no runtime at all. These all define the main entry point as: .globl _start function _start _start: but clang's integrated assembler complains that: error: symbol '_start' is already defined due to having both a label and function directive. Remove the label to allow building with clang. No functional change. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Link: https://lore.kernel.org/r/20230111-arm64-kselftest-clang-v1-2-89c69d377727@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
kselftest/arm64: Log fp-stress child startup errors to stdout [ Upstream commit dca93d29845dfed60910ba13dbfb6ae6a0e19f6d ] Currently if we encounter an error between fork() and exec() of a child process we log the error to stderr. This means that the errors don't get annotated with the child information which makes diagnostics harder and means that if we miss the exit signal from the child we can deadlock waiting for output from the child. Improve robustness and output quality by logging to stdout instead. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20241023-arm64-fp-stress-exec-fail-v1-1-ee3c62932c15@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Sasha Levin <sashal@kernel.org> | 1 年前 | |
selftests: arm64: Add wrapper scripts for stress tests Add wrapper scripts which invoke fpsimd-test and sve-test with several copies per CPU such that the context switch code will be appropriately exercised. Signed-off-by: Mark Brown <broonie@kernel.org> Acked-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Link: https://lore.kernel.org/r/20200819114837.51466-6-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> | 5 年前 | |
kselftest/arm64: Remove redundant _start labels from FP tests There are a number of freestanding static executables used in floating point testing that have no runtime at all. These all define the main entry point as: .globl _start function _start _start: but clang's integrated assembler complains that: error: symbol '_start' is already defined due to having both a label and function directive. Remove the label to allow building with clang. No functional change. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Link: https://lore.kernel.org/r/20230111-arm64-kselftest-clang-v1-2-89c69d377727@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
kselftest/arm64: Extend vector configuration API tests to cover SME Provide RDVL helpers for SME and extend the main vector configuration tests to cover SME. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-32-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 4 年前 | |
kselftest/arm64: Provide a helper binary and "library" for SVE RDVL SVE provides an instruction RDVL which reports the currently configured vector length. In order to validate that our vector length configuration interfaces are working correctly without having to build the C code for our test programs with SVE enabled provide a trivial assembly library with a C callable function that executes RDVL. Since these interfaces also control behaviour on exec*() provide a trivial wrapper program which reports the currently configured vector length on stdout, tests can use this to verify that behaviour on exec*() is as expected. In preparation for providing similar helper functionality for SME, the Scalable Matrix Extension, which allows separately configured vector lengths to be read back both the assembler function and wrapper binary have SVE included in their name. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Dave Martin <Dave.Martin@arm.com> Link: https://lore.kernel.org/r/20210803140450.46624-2-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 4 年前 | |
kselftest/arm64: Extend vector configuration API tests to cover SME Provide RDVL helpers for SME and extend the main vector configuration tests to cover SME. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-32-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 4 年前 | |
kselftest/arm64: Extend vector configuration API tests to cover SME Provide RDVL helpers for SME and extend the main vector configuration tests to cover SME. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-32-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 4 年前 | |
kselftest/arm64: Add a stress test program for ZT0 Following the pattern for the other register sets add a stress test program for ZT0 which continually loads and verifies patterns in the register in an effort to discover context switching problems. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20221208-arm64-sme2-v4-14-f2fa0aef982f@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
kselftest/arm64: sme: Provide streaming mode SVE stress test One of the features of SME is the addition of streaming mode, in which we have access to a set of streaming mode SVE registers at the SME vector length. Since these are accessed using the SVE instructions let's reuse the existing SVE stress test for testing with a compile time option for controlling the few small differences needed: - Enter streaming mode immediately on starting the program. - In streaming mode FFR is removed so skip reading and writing FFR. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-33-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 4 年前 | |
kselftest/arm64: Validate vector lengths are set in sve-probe-vls Currently sve-probe-vls does not verify that the vector lengths reported by the prctl() interface are actually what is reported by the architecture, use the rdvl_sve() helper to validate this. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Dave Martin <Dave.Martin@arm.com> Link: https://lore.kernel.org/r/20210803140450.46624-3-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 4 年前 | |
kselftest/arm64: Specify SVE data when testing VL set in sve-ptrace [ Upstream commit 9e8ebfe677f9101bbfe1f75d548a5aec581e8213 ] Since f916dd32a943 ("arm64/fpsimd: ptrace: Mandate SVE payload for streaming-mode state") we reject attempts to write to the streaming mode regset even if there is no register data supplied, causing the tests for setting vector lengths and setting SVE_VL_INHERIT in sve-ptrace to spuriously fail. Set the flag to avoid the issue, we still support not supplying register data. Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20250609-kselftest-arm64-ssve-fixups-v2-3-998fcfa6f240@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Sasha Levin <sashal@kernel.org> (cherry picked from commit bdd66b918215ff5f341868a5ac55ba7d8950f625) | 11 个月前 | |
selftests: arm64: Add wrapper scripts for stress tests Add wrapper scripts which invoke fpsimd-test and sve-test with several copies per CPU such that the context switch code will be appropriately exercised. Signed-off-by: Mark Brown <broonie@kernel.org> Acked-by: Dave Martin <Dave.Martin@arm.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Link: https://lore.kernel.org/r/20200819114837.51466-6-broonie@kernel.org Signed-off-by: Will Deacon <will@kernel.org> | 5 年前 | |
kselftest/arm64: Remove redundant _start labels from FP tests There are a number of freestanding static executables used in floating point testing that have no runtime at all. These all define the main entry point as: .globl _start function _start _start: but clang's integrated assembler complains that: error: symbol '_start' is already defined due to having both a label and function directive. Remove the label to allow building with clang. No functional change. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Link: https://lore.kernel.org/r/20230111-arm64-kselftest-clang-v1-2-89c69d377727@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
kselftest/arm64: Validate that changing one VL type does not affect another On a system with both SVE and SME when we change one of the VLs this should not result in a change in the other VL. Add a check that this is in fact the case to vec-syscfg. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20230720-arm64-fix-sve-sme-vl-change-v2-3-8eea06b82d57@kernel.org Signed-off-by: Will Deacon <will@kernel.org> | 2 年前 | |
kselftest/arm64: sme: Add SME support to vlset The Scalable Matrix Extenions (SME) introduces additional register state with configurable vector lengths, similar to SVE but configured separately. Extend vlset to support configuring this state with a --sme or -s command line option. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-30-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 4 年前 | |
selftests/arm64: Add a testcase for handling of ZA on clone() Add a small testcase that attempts to do a clone() with ZA enabled and verifies that it remains enabled with the same contents. We only check one word in one horizontal vector of ZA since there's already other tests that check for data corruption more broadly, we're just looking to make sure that ZA is still enabled and it looks like the data got copied. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20220419112247.711548-40-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 4 年前 | |
kselftest/arm64: Fix output formatting for za-fork commit 460e462d22542adfafd8a5bc979437df73f1cbf3 upstream. The za-fork test does not output a newline when reporting the result of the one test it runs, causing the counts printed by kselftest to be included in the test name. Add the newline. Fixes: 266679ffd867 ("kselftest/arm64: Convert za-fork to use kselftest.h") Cc: <stable@vger.kernel.org> # 6.4.x Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20231116-arm64-fix-za-fork-output-v1-1-42c03d4f5759@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2 年前 | |
kselftest/arm64: Limit the maximum VL we try to set via ptrace When SVE was initially merged we chose to export the maximum VQ in the ABI as being 512, rather more than the architecturally supported maximum of 16. For the ptrace tests this results in us generating a lot of test cases and hence log output which are redundant since a system couldn't possibly support them. Instead only check values up to the current architectural limit, plus one more so that we're covering the constraining of higher vector lengths. This makes no practical difference to our test coverage, speeds things up on slower consoles and makes the output much more managable. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20230111-arm64-kselftest-ptrace-max-vl-v1-1-8167f41d1ad8@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
kselftest/arm64: Add stress test for SME ZA context switching Add a stress test for context switching of the ZA register state based on the similar tests Dave Martin wrote for FPSIMD and SVE registers. The test loops indefinitely writing a data pattern to ZA then reading it back and verifying that it's what was expected. Unlike the other tests we manually assemble the SME instructions since at present no released toolchain has SME support integrated. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Shuah Khan <skhan@linuxfoundation.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20220419112247.711548-35-broonie@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 4 年前 | |
kselftest/arm64: Remove redundant _start labels from FP tests There are a number of freestanding static executables used in floating point testing that have no runtime at all. These all define the main entry point as: .globl _start function _start _start: but clang's integrated assembler complains that: error: symbol '_start' is already defined due to having both a label and function directive. Remove the label to allow building with clang. No functional change. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Link: https://lore.kernel.org/r/20230111-arm64-kselftest-clang-v1-2-89c69d377727@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
kselftest/arm64: Add coverage of the ZT ptrace regset Add coverage of the ZT ptrace interface. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20221208-arm64-sme2-v4-20-f2fa0aef982f@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 | |
kselftest/arm64: Remove redundant _start labels from zt-test The newly added zt-test program copied the pattern from the other FP stress test programs of having a redundant _start label which is rejected by clang, as we did in a parallel series for the other tests remove the label so we can build with clang. No functional change. Signed-off-by: Mark Brown <broonie@kernel.org> Link: https://lore.kernel.org/r/20230130-arm64-fix-sme2-clang-v1-1-3ce81d99ea8f@kernel.org Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> | 3 年前 |
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