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Re: [Xen-devel] QEMU upstreaming: status and todo

To: Keir Fraser <keir@xxxxxxx>
Subject: Re: [Xen-devel] QEMU upstreaming: status and todo
From: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
Date: Wed, 5 Jan 2011 18:57:48 +0000
Cc: Anthony, Perard <anthony.perard@xxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Kamala Narasimhan \(3P\)" <kamala.narasimhan@xxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>
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On Wed, 5 Jan 2011, Keir Fraser wrote:
> On 05/01/2011 17:03, "Stefano Stabellini" <Stefano.Stabellini@xxxxxxxxxxxxx>
> wrote:
> > - switch to SeaBios
> > Qemu uses SeaBios, that has several advantages on RomBios, one of them
> > is that SeaBios is actually maintained.
> > It makes sense to switch from the old Qemu and the old bios to a new
> > Qemu and a new bios at the same time in order to reduce the
> > compatibility pains to users.
> Are the two really dependent on each other? Our virtual firmware seems to
> work okay now, it took a while to get there, and it now rarely needs to be
> fixed. I guess I don't care about the legacy rombios/vgabios bits too much,
> but I'd be unhappy about throwing away all our ACPI stuff. That was a pain
> to actually get working well. That means you can have
> tools/firmware/{rom,vga}bios if you want, but trickier to mess with anything
> under tools/firmware/hvmloader.
I was proposing only to replace rombios: from a conversation we had with
the SeaBios maintainer at LPC, I think SeaBios can be made to work from
hvmloader without too much trouble. However I haven't read the code so
this needs to be tested.

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