Re: [Xen-devel] [PATCH 2 of 3] Enable UEFI BIOS(OVMF) support in

xen-devel

Re: [Xen-devel] [PATCH 2 of 3] Enable UEFI BIOS(OVMF) support in Xen-uns

To:	Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>, Bei Guan <gbtju85@xxxxxxxxx>
Subject:	Re: [Xen-devel] [PATCH 2 of 3] Enable UEFI BIOS(OVMF) support in Xen-unstable HVM
From:	Keir Fraser <keir@xxxxxxx>
Date:	Tue, 09 Aug 2011 15:47:37 +0100
Cc:	Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Tim Deegan <Tim.Deegan@xxxxxxxxxxxxx>, "edk2-devel@xxxxxxxxxxxxxxxxxxxxx" <edk2-devel@xxxxxxxxxxxxxxxxxxxxx>, Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>, Andrei Warkentin <andreiw@xxxxxxxxxxxx>, Keir Fraser <keir.xen@xxxxxxxxx>, Jordan Justen <jljusten@xxxxxxxxx>
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On 09/08/2011 15:39, "Ian Campbell" <Ian.Campbell@xxxxxxxxxxxxx> wrote:

>>> +    { "ovmf-ia32", &ovmf32_config, },
>>> +    { "ovmf-x64", &ovmf64_config, },
>>         
>>         
>>         I suppose these (asymmetric) names are OVMF-isms?
>> Yes, these two are the names of OVMF BIOS in platform IA32 and X64.
> 
> Ick, but oh well...
> 
> Is there any reason to prefer one to the other? How do I choose which
> one I want? Can it be autodetected?

I suspect ovmf-x64 is a superset of the capabilities of ovmf-ia32 (e.g.,
ability to boot UEFI-bootable 64-bit OSes?). If so, we should only support
one config option -- "ovmf" -- and have hvmloader auto-load the appropriate
OVMF build, based on CPUID.long_mode.

 -- Keir

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Re: [Xen-devel] [PATCH 2 of 3] Enable UEFI BIOS(OVMF) support in Xen-uns