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(parent: 9626c78) | 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)
commita608c909befdf05f1c1300a8769df7fdd42d878d
treeaa5c39c562854ef4533880e3fd2419c4d0823059tree | snapshot
parent9626c7883a98e2a7f5543408611d60b83ce301a7commit | 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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