APPLIED: [PULL][Artful] Fix KVM hang on ThunderX systems

[Seth Forshee]

On Mon, Jul 24, 2017 at 11:06:31AM -0500, Seth Forshee wrote:
> On Thu, Jul 20, 2017 at 03:54:46PM -0600, dann frazier wrote:
> > BugLink: https://bugs.launchpad.net/bugs/1673564
> > 
> > There's a pretty nasty errata for ThunderX SoCs in which a guest can
> > cause interrupts to be disabled on the host kernel. The symptoms vary,
> > but it's easy to reproduce running a bunch of parallel VM start/stop
> > loops.
> > 
> > There was quite a bit of backporting required for the patches in this
> > series. For such patches, I've described the changes required in a
> > comment above my S-o-B. They are mostly mechanical transformations to
> > revert macro cleanups that occurred post-4.11.
> > 
> > This survived an overnight run of my parallel VM start/stop test on a
> > CRB1S, whereas an unpatched system would fail in just a few minutes.
> > 
> > I created this backport as a stepping stone towards 4.10. While I
> > suspect artful's days of 4.11 are quickly coming to an end, I figured
> > I might as well submit it since I have it. Note that while this
> > backport cherry-picks cleanly back to Ubuntu's 4.10, it isn't
> > compatible - by which I mean, KVM crashes immediately. Diagnosing that
> > is my next step.
> > 
> > The following changes since commit bfdccafa8f542c8f9740a64ecb110e4982e336c0:
> > 
> >   platform/x86: thinkpad_acpi: add mapping for new hotkeys (2017-07-20
> > 14:50:48 -0500)
> > 
> > are available in the git repository at:
> > 
> >   git://git.launchpad.net/~dannf/ubuntu/+source/linux/+git/linux
> > lp1673564-artful
> > 
> > for you to fetch changes up to 08ecebdce871761059927c93adcb3cb90da2680e:
> > 
> >   KVM: arm64: Log an error if trapping a write-to-read-only GICv3
> > access (2017-07-20 15:31:07 -0600)
> 
> Quick question. When I fetched your tree I noticed a lp1673564-unstable
> branch as well. Is that one ready to go for unstable?

Nevermind, I see that you had already sent that one and I had applied
it. I've applied this one to artful/master-next. Thanks!

Seth