From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gleb Natapov <gleb@redhat.com>
Subject: Re: [Qemu-devel] [RFC v5 86/86] 440fx: fix PAM, PCI holes
Date: Mon, 25 Jul 2011 16:17:28 +0300
Message-ID: <20110725131728.GD4404@redhat.com>
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Cc: Anthony Liguori <anthony@codemonkey.ws>, qemu-devel@nongnu.org,
	kvm@vger.kernel.org
To: Avi Kivity <avi@redhat.com>
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On Mon, Jul 25, 2011 at 04:14:45PM +0300, Avi Kivity wrote:
> On 07/25/2011 04:07 PM, Anthony Liguori wrote:
> >On 07/20/2011 11:50 AM, Avi Kivity wrote:
> >>The current implementation of PAM and the PCI holes is broken in se=
veral
> >>ways:
> >>
> >>   - PCI BARs are not restricted to the PCI hole (a BAR may hide me=
mory)
> >
> >Technically, a BAR can be mapped to any non-RAM memory location.
>=20
> I understood TOM (Top Of Memory) to be fixed - can't find a register
> for it - but maybe I misread the spec.
>=20
PIIX3 spec:

2.2.11.    TOM=97TOP OF MEMORY REGISTER (Function 0)
Address Offset:    69h
Default Value:     02h
Attribute:         Read/Write

--
			Gleb.