diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2021-11-23 19:51:58 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2021-11-24 21:08:58 +1100 |
| commit | 2251fbe76395e4d89c31099984714c5f1135f052 (patch) | |
| tree | c1971c38297e1a4f0672386bf59ff7b133d5bf1e /arch/powerpc/include/uapi | |
| parent | 34e119c96b2b381278d1ddf6b1708678462daba4 (diff) | |
KVM: PPC: Book3S HV P9: Improve mtmsrd scheduling by delaying MSR[EE] disable
Moving the mtmsrd after the host SPRs are saved and before the guest
SPRs start to be loaded can prevent an SPR scoreboard stall (because
the mtmsrd is L=1 type which does not cause context synchronisation.
This is also now more convenient to combined with the mtmsrd L=0
instruction to enable facilities just below, but that is not done yet.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-21-npiggin@gmail.com
Diffstat (limited to 'arch/powerpc/include/uapi')
0 files changed, 0 insertions, 0 deletions