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(parent: 7249c50) | patch
powerpc/pseries: Do not start secondaries in Open Firmware
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Wed, 25 Sep 2013 04:02:50 +0000 (14:02 +1000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Wed, 25 Sep 2013 04:19:00 +0000 (14:19 +1000)
commitc4941ec406dc6a3b995e2456a01eb6db12e6430f
tree5f92183e5a07ccb71a3127b72f333d087ff5459dtree | snapshot
parent7249c50fb6b570f5d11f1d37b37e1dd0591f722dcommit | diff
powerpc/pseries: Do not start secondaries in Open Firmware

Starting secondary CPUs early on from Open Firmware and placing them
in a holding spin loop slows down the boot process significantly under
some hypervisors such as KVM.

This is also unnecessary when RTAS supports querying the CPU state

So let's not do it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/prom_init.c diff | blob | history
arch/powerpc/platforms/pseries/smp.c diff | blob | history
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