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KVM: PPC: Book3S HV P9: Avoid SPR scoreboard stalls
authorNicholas Piggin <npiggin@gmail.com>
Tue, 23 Nov 2021 09:52:03 +0000 (19:52 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Wed, 24 Nov 2021 10:08:59 +0000 (21:08 +1100)
commit0d1374ba59b490282232247c0d48e45056c2bf4c
tree5833774a0d676fd979366875ff7d529521ecfb27tree | snapshot
parentc560deb4825667d915575e488312e9adf0a1bc7dcommit | diff
KVM: PPC: Book3S HV P9: Avoid SPR scoreboard stalls

Avoid interleaving mfSPR and mtSPR to reduce SPR scoreboard stalls.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211123095231.1036501-26-npiggin@gmail.com
arch/powerpc/kvm/book3s_hv.c diff | blob | history
arch/powerpc/kvm/book3s_hv_p9_entry.c diff | blob | history
Linux Kernel Source Tree.