Re: [Xen-devel] [PATCH 1 of 2] Add the support for Xen to include OVMF UEFI support and directly use it

[Ian Campbell <Ian.Campbell@xxxxxxxxxx>]

On Thu, 2012-02-23 at 14:48 +0000, Jan Beulich wrote:
> >>> Attilio Rao <attilio.rao@xxxxxxxxxx> 02/23/12 11:18 AM >>>
> >On 23/02/12 10:07, Ian Campbell wrote:
> >> On Wed, 2012-02-22 at 19:17 +0000, Attilio Rao wrote:
> >> Can you confirm that you need an OVMF which matches the OS bit-width you
> >> are installing. i..e that there is no support for booting a 32 bit EFI
> >> OS (or bootloader, shell, whatever it is called) on a 64 bit OVMF?
> >
> >I didn't test this case, really, but I would think OVMF-64 / OS-32 could 
> >possibly work.
> 
> Native EFI requires bit-matched OS loaders,

Is that a shortcoming of EFI generally or just this implementation?

Surely people don't reflash their "BIOS" to be able to run a 32 vs 64
bit OS? Or do most OSes (even 32 bit ones) have a 64 bit loader capable
of loading a 32 bit OS?

Ian.


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