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| author | Nicholas Piggin <npiggin@gmail.com> | 2022-01-23 21:47:25 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-05-13 21:33:26 +1000 |
| commit | 361234d7a1c9a5290d33e35d49821b7a32a32854 (patch) | |
| tree | a1aa737a6eaf5d55c1453643d01059205739f55c /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 861604614a94a7aabc111e4a18aaf5d56d270e8a (diff) | |
KVM: PPC: Book3S HV P9: Optimise loads around context switch
It is better to get all loads for the register values in flight
before starting to switch LPID, PID, and LPCR because those
mtSPRs are expensive and serialising.
This also just tidies up the code for a potential future change
to the context switching sequence.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Fabiano Rosas <farosas@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220123114725.3549202-1-npiggin@gmail.com
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
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