d81090ed44
With the MMCR0 control bit (PMCCEXT) in ISA v3.1, read access to group B registers is restricted when MMCR0 PMCC=0b00. In other platforms (like power9), the older behaviour works where group B PMU SPRs are readable. Patch creates a selftest which verifies that the test takes a SIGILL when attempting to read PMU registers via helper function "dump_ebb_state" for ISA v3.1. Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com> Tested-by: Nageswara R Sastry <rnsastry@linux.ibm.com <mailto:rnsastry@linux.ibm.com>> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/1621950703-1532-3-git-send-email-atrajeev@linux.vnet.ibm.com |
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| .. | ||
| .gitignore | ||
| back_to_back_ebbs_test.c | ||
| busy_loop.S | ||
| close_clears_pmcc_test.c | ||
| cpu_event_pinned_vs_ebb_test.c | ||
| cpu_event_vs_ebb_test.c | ||
| cycles_test.c | ||
| cycles_with_freeze_test.c | ||
| cycles_with_mmcr2_test.c | ||
| ebb.c | ||
| ebb.h | ||
| ebb_handler.S | ||
| ebb_on_child_test.c | ||
| ebb_on_willing_child_test.c | ||
| ebb_vs_cpu_event_test.c | ||
| event_attributes_test.c | ||
| fixed_instruction_loop.S | ||
| fork_cleanup_test.c | ||
| instruction_count_test.c | ||
| lost_exception_test.c | ||
| Makefile | ||
| multi_counter_test.c | ||
| multi_ebb_procs_test.c | ||
| no_handler_test.c | ||
| pmae_handling_test.c | ||
| pmc56_overflow_test.c | ||
| reg_access_test.c | ||
| regs_access_pmccext_test.c | ||
| task_event_pinned_vs_ebb_test.c | ||
| task_event_vs_ebb_test.c | ||
| trace.c | ||
| trace.h | ||