Re: [for-5.0 PATCH 0/4] ppc: Fix interrupt controller emulation

[Greg Kurz]

On Mon, 9 Dec 2019 12:07:35 +0100
Cornelia Huck <address@hidden> wrote:

> On Mon, 9 Dec 2019 11:59:47 +0100
> Greg Kurz <address@hidden> wrote:
> 
> > On Mon, 9 Dec 2019 12:14:28 +1100
> > David Gibson <address@hidden> wrote:
> > 
> > > On Wed, Dec 04, 2019 at 08:43:31PM +0100, Greg Kurz wrote:  
> > > > Guest hangs have been observed recently on POWER9 hosts, specifically 
> > > > LC92x
> > > > "Boston" systems, when the guests are being rebooted multiple times. The
> > > > issue isn't POWER9 specific though. It is caused by a very long 
> > > > standing bug
> > > > when using the uncommon accel=kvm,kernel-irqchip=off machine 
> > > > configuration
> > > > which happens to be enforced on LC92x because of a host FW limitation. 
> > > > This
> > > > affects both the XICS and XIVE emulated interrupt controllers.
> > > > 
> > > > The actual fix is in patch 1. Patch 2 is a followup cleanup. The other
> > > > patches are unrelated cleanups I came up with while investigating.
> > > > 
> > > > Since this bug always existed and we're already in rc4, I think it is 
> > > > better
> > > > to fix it in 5.0 and possibly backport it to stable and downstream if 
> > > > needed.  
> > > 
> > > Applied to ppc-for-5.0.
> > > 
> > >   
> > 
> > According to Cornelia's comments, it seems I need to respin this against
> > the s390-next branch to avoid conflicts.
> 
> 
> Aren't these ppc-only patches, though? Confused.

Oops... I've mixed up with the CPUReset series, sorry for the confusion :-)

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