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linux/tools/testing/selftests/powerpc/pmu/ebb
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Athira Rajeev d81090ed44 selftests/powerpc: EBB selftest for MMCR0 control for PMU SPRs in ISA v3.1 
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
2021-06-17 00:09:11 +10:00
..
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
back_to_back_ebbs_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
busy_loop.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
close_clears_pmcc_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
cpu_event_pinned_vs_ebb_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
cpu_event_vs_ebb_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
cycles_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
cycles_with_freeze_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
cycles_with_mmcr2_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
ebb.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
ebb.h selftests/powerpc: Remove the repeated declaration 2021-06-15 17:12:27 +10:00
ebb_handler.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
ebb_on_child_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
ebb_on_willing_child_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
ebb_vs_cpu_event_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
event_attributes_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
fixed_instruction_loop.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
fork_cleanup_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
instruction_count_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
lost_exception_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
Makefile selftests/powerpc: EBB selftest for MMCR0 control for PMU SPRs in ISA v3.1 2021-06-17 00:09:11 +10:00
multi_counter_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
multi_ebb_procs_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
no_handler_test.c selftests/powerpc: Fix "no_handler" EBB selftest 2021-06-17 00:09:11 +10:00
pmae_handling_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
pmc56_overflow_test.c selftests/powerpc: Purge extra count_pmc() calls of ebb selftests 2020-07-08 22:09:31 +10:00
reg_access_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
regs_access_pmccext_test.c selftests/powerpc: EBB selftest for MMCR0 control for PMU SPRs in ISA v3.1 2021-06-17 00:09:11 +10:00
task_event_pinned_vs_ebb_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
task_event_vs_ebb_test.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
trace.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191 2019-05-30 11:29:21 -07:00
trace.h powerpc/mm: Replace zero-length array with flexible-array 2020-05-15 11:58:54 +10:00