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| author | Nicholas Piggin <npiggin@gmail.com> | 2021-11-23 19:52:23 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-11-24 21:09:02 +1100 |
| commit | b49c65c5f9f1dac4ef1764578ad55bacf526eb38 (patch) | |
| tree | 2364d675b568228d7fe3c23c5b93a13b1c80f622 /scripts/stackusage | |
| parent | 46dea77f790c1e7ab2e9f7452e34de0dc5da9b13 (diff) | |
| download | cachepc-linux-b49c65c5f9f1dac4ef1764578ad55bacf526eb38.tar.gz cachepc-linux-b49c65c5f9f1dac4ef1764578ad55bacf526eb38.zip | |
KVM: PPC: Book3S HV P9: Improve mfmsr performance on entry
Rearrange the MSR saving on entry so it does not follow the mtmsrd to
disable interrupts, avoiding a possible RAW scoreboard stall.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-46-npiggin@gmail.com
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