On Thu, 2017-08-03 at 01:38:22 UTC, Sukadev Bhattiprolu wrote: > >From fd0abf5c61b6041fdb75296e8580b86dc91d08d6 Mon Sep 17 00:00:00 2001 > From: Benjamin Herrenschmidt <b...@kernel.crashing.org> > Date: Tue, 1 Aug 2017 20:54:41 -0500 > Subject: [PATCH] powerpc: xive: ensure active irqd when setting affinity > > Ensure irqd is active before attempting to set affinity. This should > make the set affinity code more robust. For instance, this prevents > these messages seen on a 4.12 based kernel when taking cpus offline: > > [ 123.053037264,3] XIVE[ IC 00 ] ISN 2 lead to invalid IVE ! > [ 77.885859] xive: Error -6 reconfiguring irq 17 > [ 77.885862] IRQ17: set affinity failed(-6). > > The underlying problem with taking cpus offline was fixed in 4.13-rc1 by: > > commit 91f26cb4cd3c ("genirq/cpuhotplug: Do not migrated shutdown irqs") > > Signed-off-by: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com> > Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Applied to powerpc next, thanks. https://git.kernel.org/powerpc/c/cffb717ceb8e2ca0316e89d908db54 cheers