Re: [Qemu-devel] [RFC v3 0/8] Fix QEMU crash during memory hotplug with vhost=on

[Michael S. Tsirkin]

On Wed, Jul 15, 2015 at 06:26:03PM +0300, Andrey Korolyov wrote:
> On Wed, Jul 15, 2015 at 6:18 PM, Igor Mammedov <address@hidden> wrote:
> > On Thu, 9 Jul 2015 20:04:35 +0300
> > Andrey Korolyov <address@hidden> wrote:
> >
> >> On Wed, Jul 8, 2015 at 6:46 PM, Igor Mammedov <address@hidden> wrote:
> >> > On Wed, 8 Jul 2015 13:01:05 +0300
> >> > "Michael S. Tsirkin" <address@hidden> wrote:
> >> >
> >> > [...]
> >> >> - this fixes qemu on current kernels, so it's a bugfix
> >> >>
> >> >> - this changes the semantics of memory hot unplug slightly
> >> >>   so I think it's important to merge in 2.4 before we
> >> >>   release qemu with memory hot unplug, this way we
> >> >>   won't have to maintain old semantics forever
> >> > concerning semantic change, I've just chatted with Peter
> >> > who implemented libvirt side of the memory hotplug stack.
> >> > And it's not a problem for libvirt since it always does
> >> > unplug dimm -> remove backend sequence.
> >> >
> >> >
> >>
> >>
> >> Just for the record - top of the series somehow fixed mysterious guest
> >> memory corruption issue described in
> >> https://lists.gnu.org/archive/html/qemu-devel/2015-06/msg03117.html
> >> which existed right from a moment of a memory hotplug introduction, I
> >> checked series for its disappearance only with vhost for now.  Thanks
> >> Igor!
> > just to be sure which patch exactly fixed issue for you?
> >
> 
> Had not bisected this yet, 2.3 is fairly distant from mine production
> yet... will post a result today or tomorrow. Until then, I`ll be
> absolutely out of clues of what was behind mentioned corruption.

Igor merely asked which of his 8 patches fixed it.

-- 
MST