Re: [Xen-devel] [RFC PATCH 07/12] hvmloader: allocate MMCONFIG area in the MMIO hole + minor code refactoring

[Paul Durrant <Paul.Durrant@xxxxxxxxxx>]

> -----Original Message-----
> From: Xen-devel [mailto:xen-devel-bounces@xxxxxxxxxxxxxxxxxxxx] On Behalf
> Of Jan Beulich
> Sent: 23 March 2018 11:39
> To: Paul Durrant <Paul.Durrant@xxxxxxxxxx>
> Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>; Wei Liu
> <wei.liu2@xxxxxxxxxx>; Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>;
> 'Alexey G' <x1917x@xxxxxxxxx>; xen-devel@xxxxxxxxxxxxxxxxxxxx; Anthony
> Perard <anthony.perard@xxxxxxxxxx>; Ian Jackson <Ian.Jackson@xxxxxxxxxx>;
> Roger Pau Monne <roger.pau@xxxxxxxxxx>
> Subject: Re: [Xen-devel] [RFC PATCH 07/12] hvmloader: allocate MMCONFIG
> area in the MMIO hole + minor code refactoring
> 
> >>> On 23.03.18 at 11:29, <Paul.Durrant@xxxxxxxxxx> wrote:
> > No, that's not quite right. Only qemu-trad (and stubdom) are 'default' ioreq
> > servers. Upstream QEMU has registered individual PCI devices with Xen for
> > some time now, and hence gets proper PCI config IOREQs. Also we really
> really
> > want default ioreq servers as their interface to Xen is fragile and has only
> > just narrowly avoided being a security issue.
> 
> Did you miss some "don't" or "to go away"?
> 

Oops, yes! "to go away" definitely.

  Paul

> Jan
> 
> 
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