Re: [Qemu-devel] [PATCH v4 0/6] spapr/xics: fix migration of older machine types

[David Gibson <david@gibson.dropbear.id.au>]

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On Fri, Jun 09, 2017 at 05:09:13PM +0200, Greg Kurz wrote:
> On Fri, 9 Jun 2017 20:28:32 +1000
> David Gibson <david@gibson.dropbear.id.au> wrote:
> 
> > On Fri, Jun 09, 2017 at 11:36:31AM +0200, Greg Kurz wrote:
> > > On Fri, 9 Jun 2017 12:28:13 +1000
> > > David Gibson <david@gibson.dropbear.id.au> wrote:
> > >   
> > > > On Thu, Jun 08, 2017 at 03:42:32PM +0200, Greg Kurz wrote:  
> > > > > I've provided answers for all comments from the v3 review that I deliberately
> > > > > don't address in v4.    
> > > > 
> > > > I've merged patches 1-4.  5 & 6 I'm still reviewing.
> > > >   
> > > 
> > > Cool. FYI, I forgot to mention that I only tested with KVM.
> > > 
> > > I'm now trying with TCG and I hit various guest crash on
> > > the destination (using your ppc-for-2.10 branch WITHOUT
> > > my patches):  
> > 
> > Drat.  What's your reproducer for this crash?
> > 
> 
> 1) start guest
> 
> qemu-system-ppc64 \
>  -nodefaults -nographic -snapshot -no-shutdown -serial mon:stdio \
>  -device virtio-net,netdev=netdev0,id=net0 \
>  -netdev bridge,id=netdev0,br=virbr0,helper=/usr/libexec/qemu-bridge-helper \
>  -device virtio-blk,drive=drive0,id=blk0 \
>  -drive file=/home/greg/images/sle12-sp1-ppc64le.qcow2,id=drive0,if=none \
>  -machine type=pseries,accel=tcg -cpu POWER8
> 
> 2) migrate
> 
> 3) destination crashes (immediately or after very short delay) or
> hangs

Ok.  I'll bisect it when I can, but you might well get to it first.


-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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