From: Preeti U Murthy <preeti@linux.vnet.ibm.com>
To: linuxppc-dev@ozlabs.org
Cc: paulus@samba.org, linux-kernel@vger.kernel.org,
srivatsa.bhat@linux.vnet.ibm.com
Subject: [PATCH 0/3] ppc:Set runlatch bits correctly for offline threads and vcpus
Date: Fri, 11 Apr 2014 16:01:39 +0530 [thread overview]
Message-ID: <20140411103030.27683.2107.stgit@preeti.in.ibm.com> (raw)
The runlatch bits with their value indicated by CTRL_RUNLATCH are set and
cleared in the SPRN_CTRL registers to indicate a busy and idle cpu
respectively. This is currently being done in the cpuidle path of the host.
But needs to be taken care of in hotplug and kvm scenarios. This patchset
is aimed at ensuring that the runlatch bits are consisten with the
utilization of a CPU under all circumstances.
---
Preeti U Murthy (3):
ppc/powernv: Set the runlatch bits correctly for offline cpus
ppc/kvm: Set the runlatch bit of a CPU just before starting guest
ppc/kvm: Clear the runlatch bit of a vcpu before napping
arch/powerpc/kvm/book3s_hv_rmhandlers.S | 18 +++++++++++++++++-
arch/powerpc/platforms/powernv/smp.c | 3 +++
2 files changed, 20 insertions(+), 1 deletion(-)
--
next reply other threads:[~2014-04-11 10:35 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-11 10:31 Preeti U Murthy [this message]
2014-04-11 10:31 ` [PATCH 1/3] ppc/powernv: Set the runlatch bits correctly for offline cpus Preeti U Murthy
2014-04-11 10:31 ` [PATCH 2/3] ppc/kvm: Set the runlatch bit of a CPU just before starting guest Preeti U Murthy
2014-04-11 10:32 ` [PATCH 3/3] ppc/kvm: Clear the runlatch bit of a vcpu before napping Preeti U Murthy
-- strict thread matches above, loose matches on Subject: below --
2014-04-11 10:11 [PATCH 0/3] ppc:Set runlatch bits correctly for offline threads and vcpus Preeti U Murthy
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