Re: [Xen-devel] [PATCH 00/07] HVM firmware passthrough

[Tim Deegan <tim@xxxxxxx>]

At 20:47 +0100 on 01 May (1335905240), Julian Pidancet wrote:
> I don't think ACPI and SMBIOS firmware passthrough are the only use
> cases here.
> 
> The module architecture could also be used to pass the BIOS and Option
> ROMs to hvmloader. The toolstack could load them from dom0's filesystem
> dynamically and pass them to hvmloader, instead of having them
> compiled-in statically in hvmloader.

AFAIK the BIOS can already load option ROMs from real or emulated
hardware, the way a real BIOS does, and I think that's a good interface.

Is loading a custom BIOS (as opposed to option ROM) something you
actually want to do, BTW?

> Would we still be able to do that with the simplifications you're
> suggesting here ?

Yes, you could definitely do it without all this module stuff.  Passing
an address and length in Xenstore would work.

Tim.

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