MIPS: smp-cps: use CPC core-other locking

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The core which the CPC core-other region relates to is based upon the
core-local core-other addressing register. As its name suggests this
register is shared between all VPEs within a core, and if there is a
possibility that multiple VPEs within a core will attempt to access
another core simultaneously then locking is required. This wasn't
previously a problem with the only user being cpu0 during boot, but will
be an issue once hotplug is implemented & may race with other users such
as cpuidle.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>

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Paul Burton 2014-03-07 10:42:52 +00:00

parent 0f4d3d1155

commit dd9233d047

1 changed files with 2 additions and 3 deletions

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arch/mips/kernel/smp-cps.c

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