powerpc/64s/idle: Run latch switch is done with MSR[EE]=0

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In the idle sleep/wake code we know that MSR[EE] is clear, so we can
avoid 2 x mfmsr and 2 x mtmsr by calling the double-underscore
versions of the run latch routines which assume interrupts are already
disabled.

Acked-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Nicholas Piggin 2017-06-13 23:05:57 +10:00 • committed by Michael Ellerman

parent 95acdc0712

commit 40d24343a8

1 changed files with 6 additions and 6 deletions

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arch/powerpc/platforms/powernv/idle.c

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