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3 Commits

Author SHA1 Message Date
Benjamin Gray
f88723a609 selftests/powerpc/dexcr: Add chdexcr utility 
Adds a utility to exercise the prctl DEXCR inheritance in the shell.
Supports setting and clearing each aspect.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
[mpe: Use correct SPDX license, use execvp() for usability, print errors]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240417112325.728010-9-bgray@linux.ibm.com
 2024-05-06 22:05:17 +10:00
Benjamin Gray
5bfa66bf86 selftests/powerpc/dexcr: Add DEXCR prctl interface test 
Some basic tests of the prctl interface of the DEXCR.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
[mpe: Add missing SPDX tag]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240417112325.728010-6-bgray@linux.ibm.com
 2024-05-06 22:05:17 +10:00
Benjamin Gray
bdb07f35a5 selftests/powerpc/dexcr: Add hashst/hashchk test 
Test the kernel DEXCR[NPHIE] interface and hashchk exception handling.

Introduces with it a DEXCR utils library for common DEXCR operations.

Volatile is used to prevent the compiler optimising away the signal
tests.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230616034846.311705-11-bgray@linux.ibm.com
 2023-06-19 17:36:28 +10:00