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