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Re: [Xen-devel] [PATCH 18/18] x86: add multiboot2 protocol support for EFI platforms



On Fri, Mar 27, 2015 at 01:36:32PM +0000, Jan Beulich wrote:
> >>> On 27.03.15 at 14:06, <daniel.kiper@xxxxxxxxxx> wrote:
> > On Tue, Mar 17, 2015 at 10:32:01AM +0000, Jan Beulich wrote:
> >> >>> On 30.01.15 at 18:54, <daniel.kiper@xxxxxxxxxx> wrote:
> >> > +        /* Skip Multiboot2 information fixed part */
> >> > +        lea     MB2_fixed_sizeof(%ebx),%ecx
> >>
> >> Let's please not add more assumptions than necessary about stuff
> >> being below 4G.
> >
> > I am not sure what do you mean by that.
>
> See the 32-bit register used for addressing here (and in many more
> places)?

This is what I expected but I was confused because you were referring only
here to this problem. Anyway, is it possible to do this in different way?
Should we care if image is always loaded at 0x100000 right now? Even with
Xen early boot code being relocatable loader could not load image higher
than 0xffffffff - 14 MiB.

Daniel

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