Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [PATCH v4 2/2] selftests/x86/amx: Update the ARCH_REQ_XCOMP_PERM test | Date | Wed, 23 Mar 2022 17:44:59 +0100 |
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On Sat, Jan 29 2022 at 09:36, Chang S. Bae wrote: > Update the arch_prctl test to check the permission bitmap whether the > requested feature is added as expected or not. > > Every non-dynamic feature that is enabled is permitted already for use. > TILECFG is not dynamic feature. Ensure the bit is always on from > ARCH_GET_XCOMP_PERM.
Running it on a machine which does not have AMX results in:
amx_64: [FAIL] xstate cpuid: invalid tile data size/offset: 0/0: Success
It's not a failure, really. Selftests are supposed to run on all machines and the proper thing to do if a hardware feature is not available is to SKIP the test and return 0.
Thanks,
tglx
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