Re: [PATCH V3 0/2] selftests/powerpc: Updates to EBB selftest for ISA v3.1
On Tue, 25 May 2021 09:51:41 -0400, Athira Rajeev wrote: > The "no_handler_test" in ebb selftests attempts to read the PMU > registers after closing of the event via helper function > "dump_ebb_state". With the MMCR0 control bit (PMCCEXT) in ISA v3.1, > read access to group B registers is restricted when MMCR0 PMCC=0b00. > Hence the call to dump_ebb_state after closing of event will generate > a SIGILL, which is expected. > > [...] Applied to powerpc/next. [1/2] selftests/powerpc: Fix "no_handler" EBB selftest https://git.kernel.org/powerpc/c/45677c9aebe926192e59475b35a1ff35ff2d4217 [2/2] selftests/powerpc: EBB selftest for MMCR0 control for PMU SPRs in ISA v3.1 https://git.kernel.org/powerpc/c/d81090ed44c0d15abf2b07663d5f0b9e5ba51525 cheers
Re: [PATCH V3 0/2] selftests/powerpc: Updates to EBB selftest for ISA v3.1
> On 25-May-2021, at 7:21 PM, Athira Rajeev wrote: > > The "no_handler_test" in ebb selftests attempts to read the PMU > registers after closing of the event via helper function > "dump_ebb_state". With the MMCR0 control bit (PMCCEXT) in ISA v3.1, > read access to group B registers is restricted when MMCR0 PMCC=0b00. > Hence the call to dump_ebb_state after closing of event will generate > a SIGILL, which is expected. > > Test has below in logs: > <<>> > !! child died by signal 4 > failure: no_handler_test > <<>> > Tested patches on Power9 and Power10 - PowerVM environment. Power9 - no_handler_test - with and without patch - success Power10 - no_handler_test - without patch - failure Power10 - no_handler_test - with patch - success Power9 - regs_access_pmccext_test - with patch - success Power10 - regs_access_pmccext_test - with patch - success Tested-by: Nageswara R Sastry mailto:rnsas...@linux.ibm.com>> Thank you.
