From: "H. Peter Anvin" <hpa@zytor.com>
To: Avi Kivity <avi@qumranet.com>
Cc: Matt_Domsch@Dell.com, pjones@redhat.com, kvm@vger.kernel.org,
Anthony Liguori <aliguori@us.ibm.com>
Subject: Re: qemu oddness with isolinux vesamenu.c32
Date: Sat, 19 Jul 2008 18:45:07 -0700 [thread overview]
Message-ID: <488298A3.9050502@zytor.com> (raw)
In-Reply-To: <488232A4.1010706@zytor.com>
H. Peter Anvin wrote:
>
> Yes, although simulating the memory "pre-shadowed" works just as well;
> then it should be marked readonly by the BIOS immediately prior to
> running INT 19h.
>
On top of this, getting proper DDIM support and PCI expansion ROM into
the BIOS would be a good thing. A PCI expansion ROM is attached to a
PCI device as a BAR and mapped into high memory, it is then copied to
shadowed RAM by the BIOS and its initialization stub is run. This is
done one device at a time, so that the initialization code can be
discarded, per the DDIM spec.
-hpa
next prev parent reply other threads:[~2008-07-20 1:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <E9909A75A543064DB66E55B8E3BE41EC72701C@ausx3mps307.aus.amer.dell.com>
[not found] ` <48800A9D.1080403@zytor.com>
2008-07-18 16:25 ` qemu oddness with isolinux vesamenu.c32 H. Peter Anvin
2008-07-18 16:53 ` H. Peter Anvin
2008-07-19 7:37 ` Avi Kivity
2008-07-19 18:29 ` H. Peter Anvin
2008-07-20 1:45 ` H. Peter Anvin [this message]
2008-07-21 9:43 ` Avi Kivity
2008-07-21 12:51 ` H. Peter Anvin
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