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| author |   Nicholas Piggin <npiggin@gmail.com> | 2021-11-23 19:52:24 +1000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2021-11-24 21:09:02 +1100 |
| commit | 241d1f19f0e5c257881a0661f201b51dc3e57f8c (patch) | |
| tree | 5d63136f9c86a397037e13b55ccf2837267e6593 /scripts/stackusage | |
| parent | KVM: PPC: Book3S HV P9: Improve mfmsr performance on entry (diff) | |
KVM: PPC: Book3S HV P9: Optimise hash guest SLB saving
slbmfee/slbmfev instructions are very expensive, moreso than a regular
mfspr instruction, so minimising them significantly improves hash guest
exit performance. The slbmfev is only required if slbmfee found a valid
SLB entry.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-47-npiggin@gmail.com
Diffstat (limited to 'scripts/stackusage')
0 files changed, 0 insertions, 0 deletions