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From: Marcel Apfelbaum <marcel.a@redhat.com>
Date: Mon, 02 Sep 2013 18:49:28 +0300
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Subject: Re: [Qemu-devel] [PATCH RFC 0/3] pci: complete master abort protocol
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To: Peter Maydell <peter.maydell@linaro.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>, Anthony Liguori <aliguori@us.ibm.com>, "Michael S. Tsirkin" <mst@redhat.com>, QEMU Developers <qemu-devel@nongnu.org>, Andreas =?ISO-8859-1?Q?F=E4rber?= <afaerber@suse.de>

On Mon, 2013-09-02 at 15:43 +0100, Peter Maydell wrote:
> On 2 September 2013 15:39, Marcel Apfelbaum <marcel.a@redhat.com> wrote:
> > On Mon, 2013-09-02 at 15:30 +0100, Peter Maydell wrote:
> >> On 2 September 2013 15:13, Marcel Apfelbaum <marcel.a@redhat.com> wrote:
> >> > Note: The series is incomplete, for review only
> >> >
> >> > PCI spec requires that a transaction that has not been claimed
> >> > by any PCI bus devices will be terminated by the initiator
> >> > with "master abort". For read transactions -1(FFFFFFFF) is returned and
> >> > writes are silently dropped. (already implemented in quemu)
> >>
> >> ...but only erroneously and by breaking a pile of other boards.
> > :(
> > Let's find a way to fix it... Please suggest
> 
> We need to apply Jan's two patches which revert the breakage
> and give us back 1.5 behaviour for unassigned memory.
> Then you can work on this patchset and we can commit it
> when it works OK.
I am going to have a look on those patches, thanks
Marcel

> 
> -- PMM
>