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(parent: 505e428) | patch
powerpc/powernv: Ignore smt-enabled on Power8 and later
authorGreg Kurz <gkurz@linux.vnet.ibm.com>
Fri, 12 Dec 2014 11:37:40 +0000 (12:37 +0100)
committerMichael Ellerman <mpe@ellerman.id.au>
Thu, 18 Dec 2014 08:59:21 +0000 (19:59 +1100)
commitd70a54e2d08510a99b1f10eceeae6f2f7086e226
tree2609a216f280aecc8684a9dac4555830d1f794dftree | snapshot
parent505e428374bc17a2c0bd388c2e8d892e9cd8eef2commit | diff
powerpc/powernv: Ignore smt-enabled on Power8 and later

Starting with POWER8, the subcore logic relies on all threads of a core
being booted so that they can participate in split mode switches. So on
those machines we ignore the smt_enabled_at_boot setting (smt-enabled on
the kernel command line).

Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
[mpe: Update comment and change log to be more precise]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/platforms/powernv/smp.c diff | blob | history
Domain: System / Kernel; Licenses: GPL-2.0;