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(parent: beb5142) | patch
powerpc/64s/exception: avoid SPR RAW scoreboard stall in real mode entry
authorNicholas Piggin <npiggin@gmail.com>
Fri, 28 Jun 2019 05:33:21 +0000 (15:33 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Tue, 2 Jul 2019 11:39:48 +0000 (21:39 +1000)
commitb60f25993dc7b4208af4dae5885a7049344da6a9
treed96eecbe758ecd71a643174b26e09e0293b0abb8tree | snapshot
parentbeb514274ba87a47bd0e34f6de724617aeb7198acommit | diff
powerpc/64s/exception: avoid SPR RAW scoreboard stall in real mode entry

Move SPR reads ahead of writes. Real mode entry that is not a KVM
guest is rare these days, but bad practice propagates.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/kernel/exceptions-64s.S diff | blob | history
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