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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-11-23 19:52:04 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-11-24 21:08:59 +1100 |
| commit | 9dfe7aa7bc50556063c8658f59ad475131c09b65 (patch) | |
| tree | f39fc4d311a843b52e4cbfa1b296a140ed28e3a0 /scripts/stackusage | |
| parent | 9a1e530bbbdaa2184993a7d7fc61d78871540ccd (diff) | |
| download | cachepc-linux-9dfe7aa7bc50556063c8658f59ad475131c09b65.tar.gz cachepc-linux-9dfe7aa7bc50556063c8658f59ad475131c09b65.zip | |
KVM: PPC: Book3S HV P9: Only execute mtSPR if the value changed
Keep better track of the current SPR value in places where
they are to be loaded with a new context, to reduce expensive
mtSPR operations.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-27-npiggin@gmail.com
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