Re: [Xen-devel] About booting Xen with UEFI on FastModel

[Chen Baozi <baozich@xxxxxxxxx>]

On Dec 20, 2013, at 18:40, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:

> On Fri, 2013-12-20 at 16:50 +0800, Chen Baozi wrote:
>> 2. This patch still cannot deal with the situation where [paddr, paddr+2M)
>> and [vaddr, vaddr+2M) are overlapped but not aligned with the same size
>> (e.g., paddr = 0x80000 & vaddr = 0x200000).
> 
> I think it ought to be possible in principal to make this work?

I’m afraid not. Unless we don’t have the identical 1:1 physical address
mappings when booting, I think.

Baozi

> 
>> So I guess a 2MB aligned load address is required in boot protocol?
> 
> That would certainly be easiest from the Xen side, as it involves no
> changes at all!
> 
> Ian
> 


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