Re: [Xen-devel] [PATCH FOR-4.5] xen: arm: Do not enable EFI in dom0 since it is not yet supported.

[Ian Campbell <ian.campbell@xxxxxxxxxx>]

On Tue, 2014-10-14 at 13:28 +0100, Julien Grall wrote:
> Hi Ian,
> 
> On 10/14/2014 08:21 AM, Ian Campbell wrote:
> > On Mon, 2014-10-13 at 12:37 -0700, Roy Franz wrote:
> >> On Mon, Oct 13, 2014 at 9:20 AM, Julien Grall <julien.grall@xxxxxxxxxx> 
> >> wrote:
> >>> (CC vijay)
> >>>
> >>> Hi Suravee,
> >>>
> >>> On 10/13/2014 05:17 PM, suravee.suthikulpanit@xxxxxxx wrote:
> >>>> From: Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>
> >>>>
> >>>> Since EFI is not yet supported in dom0, we need to remove the following
> >>>> properties from the chosen node:
> >>>>
> >>>>   * linux,uefi-mmap-start
> >>>>   * linux,uefi-mmap-size
> >>>>   * linux,uefi-mmap-desc-size
> >>>>   * linux,uefi-mmap-desc-ver
> >>>>
> >>>> These are added by "arch/arm/efi/efi-boot.h: fdt_add_uefi_nodes()",
> >>>> and used by dom0 kernel to enable EFI.
> >>>>
> >>>> Cc: Julien Grall <julien.grall@xxxxxxxxxx>
> >>>> Cc: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>
> >>>> Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
> >>>> Cc: Roy Franz <roy.franz@xxxxxxxxxx>
> >>>> Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@xxxxxxx>
> >>>
> >>> Reviewed-by: Julien Grall <julien.grall@xxxxxxxxxx>
> >>
> >> Reviewed-by: Roy Franz <roy.franz@xxxxxxxxxx>
> > 
> > Acked-by: Ian Campbell <ian.campbell@.citrix.com>
> > 
> > But I do wonder why we don't just drop the hos /chosen node -- I think
> > everything which should be in there is fabricated by the h/visor anyway.
> 
> I though about the same things yesterday, but the /chosen node may
> contain other properties (such as OS specific) that we may need to pass
> to DOM0.

What sort of thing are you thinking of here?

> 
> So a blacklist looks the better solution for now.
> 
> Regards,
> 



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