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2 Commits

Author SHA1 Message Date
Benjamin Gray
9930fba02a selftests/powerpc/dexcr: Attempt to enable NPHIE in hashchk selftest 
Now that a process can control its DEXCR to some extent, make the
hashchk tests more reliable by explicitly setting the local and onexec
NPHIE aspect.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240417112325.728010-7-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