Re: [Qemu-devel] [PULL 0/2] ppc-for-4.1 queue 20190813

[Peter Maydell]

On Tue, 13 Aug 2019 at 10:23, Peter Maydell <address@hidden> wrote:
>
> On Tue, 13 Aug 2019 at 07:59, David Gibson <address@hidden> wrote:
> >
> > The following changes since commit 5e7bcdcfe69ce0fad66012b2cfb2035003c37eef:
> >
> >   display/bochs: fix pcie support (2019-08-12 16:36:41 +0100)
> >
> > are available in the Git repository at:
> >
> >   git://github.com/dgibson/qemu.git tags/ppc-for-4.1-20190813
> >
> > for you to fetch changes up to 310cda5b5e9df642b19a0e9c504368ffba3b3ab9:
> >
> >   spapr/xive: Fix migration of hot-plugged CPUs (2019-08-13 16:50:30 +1000)
> >
> > ----------------------------------------------------------------
> > ppc patch queue 2019-08-13 (last minute qemu-4.1 fixes)
> >
> > Here's a very, very last minute pull request for qemu-4.1.  This fixes
> > two nasty bugs with the XIVE interrupt controller in "dual" mode
> > (where the guest decides which interrupt controller it wants to use).
> > One occurs when resetting the guest while I/O is active, and the other
> > with migration of hotplugged CPUs.
> >
> > The timing here is very unfortunate.  Alas, we only spotted these bugs
> > very late, and I was sick last week, delaying analysis and fix even
> > further.
> >
> > This series hasn't had nearly as much testing as I'd really like, but
> > I'd still like to squeeze it into qemu-4.1 if possible, since
> > definitely fixing two bad bugs seems like an acceptable tradeoff for
> > the risk of introducing different bugs.
>
> Are these regressions? Are they security issues?
>
> We are going to have an rc5 today, but my intention was to only put in
> the security-fix bug in the bochs display device, and then have
> a final release Thursday.

After thinking about this and reading the commit messages I've
applied this pullreq, since it clearly only affects spapr and you're
in a better position to judge the significance of the fixes than me,
but it was really really borderline...

thanks
-- PMM