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(parent: 138f557) | patch
powerpc/powernv: Return secondary CPUs to firmware before FW update
authorVasant Hegde <hegdevasant@linux.vnet.ibm.com>
Wed, 9 Apr 2014 17:18:55 +0000 (22:48 +0530)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Mon, 28 Apr 2014 07:36:34 +0000 (17:36 +1000)
commitf1162b6f4d90d4f75848ff4b5d15c1e94aed078d
treeaa5c39c562854ef4533880e3fd2419c4d0823059tree | snapshot
parent138f557d03ce9b68e6c0ceb5d80349858a75be5dcommit | diff
powerpc/powernv: Return secondary CPUs to firmware before FW update

Firmware update on PowerNV platform takes several minutes. During
this time one CPU is stuck in FW and the kernel complains about "soft
lockups".

This patch returns all secondary CPUs to firmware before starting
firmware update process.

[ Reworked a bit and cleaned up -- BenH ]

Signed-off-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/include/asm/opal.h diff | blob | history
arch/powerpc/platforms/powernv/opal-flash.c diff | blob | history
arch/powerpc/platforms/powernv/setup.c diff | blob | history
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