Re: [Xen-devel] [Patch][RFC] BIOS: configure bootable pass-through device

[Keir Fraser <keir.fraser@xxxxxxxxxxxxx>]

On 12/03/2009 10:11, "Akio Takebe" <takebe_akio@xxxxxxxxxxxxxx> wrote:

> These patches use cmos(0x60) as a place retaining the devfn of bootable
> device.
> Bochs BIOS doesn't seems to use the offset 0x60.
> What do you think of using cmos(0x60)?
> Do you have some ideas?

This shouldn't need to touch qemu at all. This is a config option that
should be parsed by xm/xend and passed directly off to hvmloader. Passing it
via hvm_info_table would make most sense in my opinion. In which case you
need to probably pass it as an optional param to xc.hvm_build() and poke it
into hvm_info_table from that Python C wrapper function.

If not specified, should you keep default behaviour and try to load all
option ROMs? I'm not fussed - it's just a thought.

 -- Keir



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