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[Xen-devel] Re: Real-mode bug with AMD, gPXE, and 32-bit rep movs

To: Michael Brown <mcb30@xxxxxxxxxxxxx>, George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Tue, 31 Mar 2009 14:06:50 +0100
Cc: Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>, Christoph Egger <Christoph.Egger@xxxxxxx>, "Huang2, Wei" <Wei.Huang2@xxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Sebastian Herbszt <herbszt@xxxxxx>
Delivery-date: Tue, 31 Mar 2009 06:07:16 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
Thread-index: AcmxtM1CE3cb7o/RSbi3ocz7EL41gQATMCCG
Thread-topic: Real-mode bug with AMD, gPXE, and 32-bit rep movs

On 31/03/2009 04:56, "Michael Brown" <mcb30@xxxxxxxxxxxxx> wrote:

> It's a bug in the BIOS; it should either not advertise PMM, or it should
> follow the PMM spec and call the initialisation entry point in flat real
> mode.

George, can you please test with xen-unstable:19477. This should give all
our real-mode segments 4GB limits, and thus fix our PMM support.

 -- Keir

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