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(parent: bf70ea8) | patch
ARCv2: smp-boot: wake_flag polling by non-Masters needs to be uncached
authorVineet Gupta <vgupta@synopsys.com>
Tue, 21 Jun 2016 08:54:33 +0000 (14:24 +0530)
committerVineet Gupta <vgupta@synopsys.com>
Tue, 24 Jan 2017 22:25:19 +0000 (14:25 -0800)
commit557c3b759eaa66294fa41ef9a66aec0f72744af5
tree58b5d951e55645252b251de62a8e449980b40849tree | snapshot
parentbf70ea81c164b6edee2a6a97eab17d85be2a1c77commit | diff
ARCv2: smp-boot: wake_flag polling by non-Masters needs to be uncached

This is needed on HS38 cores, for setting up IO-Coherency aperture properly

The polling could perturb the caches and coherecy fabric which could be
wrong in the small window when Master is setting up IOC aperture etc
in arc_cache_init()

We do it only for ARCv2 based builds to not affect EZChip ARCompact
based platform.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
arch/arc/kernel/smp.c diff | blob | history
Linux Kernel Source Tree.