Re: [PATCH v5 2/7] efi: Introduce EFI_NO_DIRECT flag

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On Wed, Jun 18, 2014 at 03:30:25PM +0100, Stefano Stabellini wrote:
> On Wed, 18 Jun 2014, Jan Beulich wrote:
> > >>> On 18.06.14 at 15:52, <matt@xxxxxxxxxxxxxxxxx> wrote:
> > > EFI_PARAVIRT will be usable by architectures other than x86, correct? If
> > > your intention is for it only ever to be used by x86, then it should
> > > probably be EFI_ARCH_2.
> >
> > I would expect ARM, once it gets UEFI support on the Xen side, to
> > be able to handle most of this identically to x86. Which raises the
> > question whether most of the new Xen-specific code (in one of the
> > other patches) wouldn't better live under drivers/xen/.
>
> I was thinking the same thing.
>
> However this patch series doesn't add much code outside
> drivers/xen/efi.c and include/xen/interface/platform.h.
> I think it wouldn't be fair to ask Daniel to refactor the efi code
> currently under arch/x86 to an arch-independent location.
> Whoever comes in later and adds EFI Xen support for ARM can do that.

I was doing those EFI patches with ARM support in mind from the beginning.
That is why I moved everything, which was possible, to arch independent
place. There are only some simple init calls from arch/x86. Just a few
required lines. So I think that it will be quite easy to use this EFI
code on ARM platform.

Daniel
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