tree eb9a20de3bdc69ee0817cae1f8cd3e7c770e3806
parent 95acdc07124f329ef3088a9bc68af905804b2e6b
author Nicholas Piggin <npiggin@gmail.com> 1497359157 +1000
committer Michael Ellerman <mpe@ellerman.id.au> 1497865590 +1000

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

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>