linux-dev/tools/testing/selftests/arm64/abi, branch master

Merge branch 'for-next/kselftest' into for-next/core

2022-09-30T08:18:11Z

* for-next/kselftest: (28 commits) : Kselftest updates for arm64 kselftest/arm64: Handle EINTR while reading data from children kselftest/arm64: Flag fp-stress as exiting when we begin finishing up kselftest/arm64: Don't repeat termination handler for fp-stress kselftest/arm64: Don't enable v8.5 for MTE selftest builds kselftest/arm64: Fix typo in hwcap check kselftest/arm64: Add hwcap test for RNG kselftest/arm64: Add SVE 2 to the tested hwcaps kselftest/arm64: Add missing newline in hwcap output kselftest/arm64: Fix spelling misakes of signal names kselftest/arm64: Enforce actual ABI for SVE syscalls kselftest/arm64: Correct buffer allocation for SVE Z registers kselftest/arm64: Include larger SVE and SME VLs in signal tests kselftest/arm64: Allow larger buffers in get_signal_context() kselftest/arm64: Preserve any EXTRA_CONTEXT in handle_signal_copyctx() kselftest/arm64: Validate contents of EXTRA_CONTEXT blocks kselftest/arm64: Only validate each signal context once kselftest/arm64: Remove unneeded protype for validate_extra_context() kselftest/arm64: Fix validation of EXTRA_CONTEXT signal context location kselftest/arm64: Fix validatation termination record after EXTRA_CONTEXT kselftest/arm64: Validate signal ucontext in place ...

kselftest/arm64: Fix typo in hwcap check

2022-09-22T19:52:06Z

We use a local variable hwcap to refer to the element of the hwcaps array which we are currently checking. When checking for the relevant hwcap bit being set in testing we were dereferencing hwcaps rather than hwcap in fetching the AT_HWCAP to use, which is perfectly valid C but means we were always checking the bit was set in the hwcap for whichever feature is first in the array. Remove the stray s. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220907113400.12982-1-broonie@kernel.org Signed-off-by: Catalin Marinas

kselftest/arm64: Add coverage of TPIDR2_EL0 ptrace interface

2022-09-21T16:26:59Z

Extend the ptrace test support for NT_ARM_TLS to cover TPIDR2_EL0 - on systems that support SME the NT_ARM_TLS regset can be up to 2 elements long with the second element containing TPIDR2_EL0. On systems supporting SME we verify that this value can be read and written while on systems that do not support SME we verify correct truncation of reads and writes. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220829154921.837871-5-broonie@kernel.org Signed-off-by: Catalin Marinas

kselftest/arm64: Add test coverage for NT_ARM_TLS

2022-09-21T16:26:58Z

In preparation for extending support for NT_ARM_TLS to cover additional TPIDRs add some tests for the existing interface. Do this in a generic ptrace test program to provide a place to collect additional tests in the future. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220829154921.837871-2-broonie@kernel.org Signed-off-by: Catalin Marinas

kselftest/arm64: Add hwcap test for RNG

2022-09-16T11:40:58Z

Validate the RNG hwcap and make sure we don't generate a SIGILL reading RNDR when it is reported. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220913141101.151400-4-broonie@kernel.org Signed-off-by: Catalin Marinas

kselftest/arm64: Add SVE 2 to the tested hwcaps

2022-09-16T11:40:57Z

Include SVE 2 and the various subfeatures it adds in the set of hwcaps we check for. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220913141101.151400-3-broonie@kernel.org Signed-off-by: Catalin Marinas

kselftest/arm64: Add missing newline in hwcap output

2022-09-16T11:40:57Z

Clean up the output of the test by adding a missing newline, the fix had been done locally but didn't make it into the applied version. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220913141101.151400-2-broonie@kernel.org Signed-off-by: Catalin Marinas

kselftest/arm64: Enforce actual ABI for SVE syscalls

2022-09-07T13:25:47Z

Currently syscall-abi permits the bits in Z registers not shared with the V registers as well as all of the predicate registers to be preserved on syscall but the actual implementation has always cleared them and our documentation has now been updated to make that the documented ABI so update the syscall-abi test to match. Signed-off-by: Mark Brown Acked-by: Catalin Marinas Link: https://lore.kernel.org/r/20220829162502.886816-4-broonie@kernel.org Signed-off-by: Catalin Marinas

kselftest/arm64: Correct buffer allocation for SVE Z registers

2022-09-07T13:25:47Z

The buffer used for verifying SVE Z registers allocated enough space for 16 maximally sized registers rather than 32 due to using the macro for the number of P registers. In practice this didn't matter since for historical reasons the maximum VQ defined in the ABI is greater the architectural maximum so we will always allocate more space than is needed even with emulated platforms implementing the architectural maximum. Still, we should use the right define. Signed-off-by: Mark Brown Acked-by: Catalin Marinas Link: https://lore.kernel.org/r/20220829162502.886816-2-broonie@kernel.org Signed-off-by: Catalin Marinas

kselftest/arm64: Add simple hwcap validation

2022-09-06T17:30:42Z

Add some trivial hwcap validation which checks that /proc/cpuinfo and AT_HWCAP agree with each other and can verify that for extensions that can generate a SIGILL due to adding new instructions one appears or doesn't appear as expected. I've added SVE and SME, other capabilities can be added later if this gets merged. This isn't super exciting but on the other hand took very little time to write and should be handy when verifying that you wired up AT_HWCAP properly. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20220829154602.827275-1-broonie@kernel.org Signed-off-by: Catalin Marinas