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

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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

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close_clears_pmcc_test.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

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cpu_event_pinned_vs_ebb_test.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

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cpu_event_vs_ebb_test.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

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cycles_test.c

selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

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cycles_with_freeze_test.c

selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

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cycles_with_mmcr2_test.c

selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

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ebb_handler.S

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ebb_on_child_test.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

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ebb_on_willing_child_test.c

selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

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ebb_vs_cpu_event_test.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

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ebb.c

selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

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ebb.h

selftests/powerpc: Remove the repeated declaration

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event_attributes_test.c

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fixed_instruction_loop.S

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fork_cleanup_test.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

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instruction_count_test.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

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lost_exception_test.c

selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

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Makefile

selftests/powerpc: EBB selftest for MMCR0 control for PMU SPRs in ISA v3.1

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multi_counter_test.c

selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

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multi_ebb_procs_test.c

selftests/powerpc: Purge extra count_pmc() calls of ebb selftests

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no_handler_test.c

selftests/powerpc: Fix "no_handler" EBB selftest

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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

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reg_access_test.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

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regs_access_pmccext_test.c

selftests/powerpc: EBB selftest for MMCR0 control for PMU SPRs in ISA v3.1

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task_event_pinned_vs_ebb_test.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 191

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task_event_vs_ebb_test.c

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trace.c

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trace.h

powerpc/mm: Replace zero-length array with flexible-array

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