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| author |   Athira Rajeev <atrajeev@linux.vnet.ibm.com> | 2021-05-25 09:51:43 -0400 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-06-17 00:09:11 +1000 |
| commit | d81090ed44c0d15abf2b07663d5f0b9e5ba51525 (patch) | |
| tree | 8119f2165e397588cb71d9ee6de697b3f79febb2 /tools/testing/selftests/powerpc/pmu/ebb/Makefile | |
| parent | selftests/powerpc: Fix "no_handler" EBB selftest (diff) | |
| download | linux-dev-d81090ed44c0d15abf2b07663d5f0b9e5ba51525.tar.xz linux-dev-d81090ed44c0d15abf2b07663d5f0b9e5ba51525.zip | |
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
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/powerpc/pmu/ebb/Makefile | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/powerpc/pmu/ebb/Makefile b/tools/testing/selftests/powerpc/pmu/ebb/Makefile index c5ecb4634094..010160690227 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/Makefile +++ b/tools/testing/selftests/powerpc/pmu/ebb/Makefile @@ -24,7 +24,7 @@ TEST_GEN_PROGS := reg_access_test event_attributes_test cycles_test \ fork_cleanup_test ebb_on_child_test \ ebb_on_willing_child_test back_to_back_ebbs_test \ lost_exception_test no_handler_test \ - cycles_with_mmcr2_test + cycles_with_mmcr2_test regs_access_pmccext_test top_srcdir = ../../../../../.. include ../../../lib.mk |