APPLIED: [PATCH] [bionic] powerpc/xive: Fix trying to "push" an already active pool VP

[Seth Forshee]

On Thu, Apr 12, 2018 at 04:19:24PM -0300, Breno Leitao wrote:
> From: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> 
> BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1763386
> 
> When setting up a CPU, we "push" (activate) a pool VP for it.
> 
> However it's an error to do so if it already has an active
> pool VP.
> 
> This happens when doing soft CPU hotplug on powernv since we
> don't tear down the CPU on unplug. The HW flags the error which
> gets captured by the diagnostics.
> 
> Fix this by making sure to "pull" out any already active pool
> first.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> Link: https://patchwork.ozlabs.org/patch/897035/
> Signed-off-by: Breno Leitao <leitao at debian.org>

Applied to bionic/master-next as SAUCE since the patch isn't upstream
yet. Thanks!