linux.git/tools/testing/selftests/arm64, branch v6.12

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

2024-09-12T12:43:57+00:00

* for-next/selftests:
  kselftest/arm64: Fix build warnings for ptrace
  kselftest/arm64: Actually test SME vector length changes via sigreturn
  kselftest/arm64: signal: fix/refactor SVE vector length enumeration

kselftest/arm64: Add test case for POR_EL0 signal frame records

2024-09-04T11:54:07+00:00

Ensure that we get signal context for POR_EL0 if and only if POE is present
on the system.

Copied from the TPIDR2 test.

Signed-off-by: Joey Gouly 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Mark Brown 
Cc: Shuah Khan 
Reviewed-by: Mark Brown 
Acked-by: Shuah Khan 
Link: https://lore.kernel.org/r/20240822151113.1479789-30-joey.gouly@arm.com
Signed-off-by: Will Deacon

kselftest/arm64: parse POE_MAGIC in a signal frame

2024-09-04T11:54:06+00:00

Teach the signal frame parsing about the new POE frame, avoids warning when it
is generated.

Signed-off-by: Joey Gouly 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Mark Brown 
Cc: Shuah Khan 
Reviewed-by: Mark Brown 
Link: https://lore.kernel.org/r/20240822151113.1479789-29-joey.gouly@arm.com
Signed-off-by: Will Deacon

kselftest/arm64: add HWCAP test for FEAT_S1POE

2024-09-04T11:54:06+00:00

Check that when POE is enabled, the POR_EL0 register is accessible.

Signed-off-by: Joey Gouly 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Mark Brown 
Cc: Shuah Khan 
Reviewed-by: Mark Brown 
Link: https://lore.kernel.org/r/20240822151113.1479789-28-joey.gouly@arm.com
Signed-off-by: Will Deacon

selftests: mm: make protection_keys test work on arm64

2024-09-04T11:54:06+00:00

The encoding of the pkey register differs on arm64, than on x86/ppc. On those
platforms, a bit in the register is used to disable permissions, for arm64, a
bit enabled in the register indicates that the permission is allowed.

This drops two asserts of the form:
	 assert(read_pkey_reg() <= orig_pkey_reg);
Because on arm64 this doesn't hold, due to the encoding.

The pkey must be reset to both access allow and write allow in the signal
handler. pkey_access_allow() works currently for PowerPC as the
PKEY_DISABLE_ACCESS and PKEY_DISABLE_WRITE have overlapping bits set.

Access to the uc_mcontext is abstracted, as arm64 has a different structure.

Signed-off-by: Joey Gouly 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Andrew Morton 
Cc: Shuah Khan 
Cc: Dave Hansen 
Cc: Aneesh Kumar K.V 
Acked-by: Dave Hansen 
Link: https://lore.kernel.org/r/20240822151113.1479789-27-joey.gouly@arm.com
Signed-off-by: Will Deacon

kselftest/arm64: move get_header()

2024-09-04T11:54:06+00:00

Put this function in the header so that it can be used by other tests, without
needing to link to testcases.c.

This will be used by selftest/mm/protection_keys.c

Signed-off-by: Joey Gouly 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Andrew Morton 
Cc: Shuah Khan 
Cc: Dave Hansen 
Cc: Aneesh Kumar K.V 
Reviewed-by: Mark Brown 
Link: https://lore.kernel.org/r/20240822151113.1479789-25-joey.gouly@arm.com
Signed-off-by: Will Deacon

kselftest/arm64: Fix build warnings for ptrace

2024-08-30T15:26:47+00:00

A "%s" is missing in ksft_exit_fail_msg(); instead, use the newly
introduced ksft_exit_fail_perror().

Signed-off-by: Dev Jain 
Reviewed-by: Shuah Khan 
Reviewed-by: Mark Brown 
Link: https://lore.kernel.org/r/20240830052911.4040970-1-dev.jain@arm.com
Signed-off-by: Will Deacon

kselftest/arm64: Actually test SME vector length changes via sigreturn

2024-08-30T11:53:04+00:00

The test case for SME vector length changes via sigreturn use a bit too
much cut'n'paste and only actually changed the SVE vector length in the
test itself. Andre's recent factoring out of the initialisation code caused
this to be exposed and the test to start failing. Fix the test to actually
cover the thing it's supposed to test.

Fixes: 4963aeb35a9e ("kselftest/arm64: signal: Add SME signal handling tests")
Signed-off-by: Mark Brown 
Reviewed-by: Andre Przywara 
Tested-by: Andre Przywara 
Link: https://lore.kernel.org/r/20240829-arm64-sme-signal-vl-change-test-v1-1-42d7534cb818@kernel.org
Signed-off-by: Will Deacon

kselftest/arm64: signal: fix/refactor SVE vector length enumeration

2024-08-23T10:34:55+00:00

Currently a number of SVE/SME related tests have almost identical
functions to enumerate all supported vector lengths. However over time
the copy&pasted code has diverged, allowing some bugs to creep in:
- fake_sigreturn_sme_change_vl reports a failure, not a SKIP if only
  one vector length is supported (but the SVE version is fine)
- fake_sigreturn_sme_change_vl tries to set the SVE vector length, not
  the SME one (but the other SME tests are fine)
- za_no_regs keeps iterating forever if only one vector length is
  supported (but za_regs is correct)

Since those bugs seem to be mostly copy&paste ones, let's consolidate
the enumeration loop into one shared function, and just call that from
each test. That should fix the above bugs, and prevent similar issues
from happening again.

Fixes: 4963aeb35a9e ("kselftest/arm64: signal: Add SME signal handling tests")
Signed-off-by: Andre Przywara 
Reviewed-by: Mark Brown 
Link: https://lore.kernel.org/r/20240821164401.3598545-1-andre.przywara@arm.com
Signed-off-by: Will Deacon

kselftest: missing arg in ptrace.c

2024-07-23T14:27:16+00:00

The string passed to ksft_test_result_skip is missing the `type_name`

Signed-off-by: Remington Brasga 
Reviewed-by: Dev Jain 
Reviewed-by: Anshuman Khandual 
Link: https://lore.kernel.org/r/20240712231730.2794-1-rbrasga@uci.edu
Signed-off-by: Will Deacon