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Re: [Xen-devel] Upstream QEMU and Xen unstable not working

To: Wei Liu <liuw@xxxxxxxxx>
Subject: Re: [Xen-devel] Upstream QEMU and Xen unstable not working
From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date: Tue, 19 Jul 2011 13:04:22 +0100
Cc: Jan, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>, "qemu-devel@xxxxxxxxxx" <qemu-devel@xxxxxxxxxx>, Beulich <JBeulich@xxxxxxxxxx>, Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, Anthony Perard <anthony.perard@xxxxxxxxxx>
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On Tue, 19 Jul 2011, Wei Liu wrote:
> On Tue, 2011-07-19 at 12:09 +0100, Stefano Stabellini wrote:
> > On Tue, 19 Jul 2011, Wei Liu wrote:
> > > Good, this is it.
> > > 
> > > But this patch is not yet pulled in the tree.
> >  
> > I pushed few commits that I had in my local tree, they should be in
> > xen-next now.
> The commit 2aa8f492c85604b91b263350560042d632fcdeb2 in your xen-next
> tree.
> Author: Anthony PERARD <anthony.perard@xxxxxxxxxx>
> Date:   Wed Jul 6 18:58:14 2011 +0100
>     hw/piix_pci.c: Fix PIIX3-xen to initialize ids
>     Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
> The content mismatch with description.
> It patches hw/ide/piix.c, which doesn't solve the problem. It should be
> hw/piix_pci.c .
> Seems that you got the wrong patch. The right one is here.
> http://marc.info/?l=qemu-devel&m=130876651402847&w=2

Yeah, I realized it right after sending the email.

Unfortunately there is also a regression in Xen, similar to the one
fixed by 23550, that causes PV on HVM guests to hang during boot at the
The offending commit is CS 23573:

"replace d->nr_pirqs sized arrays with radix tree"

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