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| author | Claudio Carvalho <cclaudio@linux.ibm.com> | 2019-08-22 00:48:34 -0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-08-30 09:40:15 +1000 |
| commit | bb04ffe85eebebd64d5e673a9434d968e80f3aa1 (patch) | |
| tree | f0375d18e4466a0af554ed7a62db72b7cd3c2226 /tools/perf/scripts | |
| parent | a49dddbdb0cca1d00fc9251e543a0aac09a6a65b (diff) | |
| download | linux-bb04ffe85eebebd64d5e673a9434d968e80f3aa1.tar.gz linux-bb04ffe85eebebd64d5e673a9434d968e80f3aa1.zip | |
powerpc/powernv: Introduce FW_FEATURE_ULTRAVISOR
In PEF enabled systems, some of the resources which were previously
hypervisor privileged are now ultravisor privileged and controlled by
the ultravisor firmware.
This adds FW_FEATURE_ULTRAVISOR to indicate if PEF is enabled.
The host kernel can use FW_FEATURE_ULTRAVISOR, for instance, to skip
accessing resources (e.g. PTCR and LDBAR) in case PEF is enabled.
Signed-off-by: Claudio Carvalho <cclaudio@linux.ibm.com>
[ andmike: Device node name to "ibm,ultravisor" ]
Signed-off-by: Michael Anderson <andmike@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190822034838.27876-4-cclaudio@linux.ibm.com
Diffstat (limited to 'tools/perf/scripts')
0 files changed, 0 insertions, 0 deletions