Re: [RFC] efi/boot: Unified Xen executable for UEFI Secure Boot support

[Jan Beulich <jbeulich@xxxxxxxx>]

On 06.08.2020 16:15, Trammell Hudson wrote:
> Updated patch:

Before I get to look at this new version, one more general remark
(just to not forget making it later): There's a scalability issue
here: Right now xen.efi requires to be loaded below the 4Gb
boundary. I've seen systems with as little as just 1Gb of memory
below that boundary, yet lots above. On such a system one ought to
be allowed to expect a huge initrd to work. If, however, the
unified Xen binary doesn't fit in what's not already used by UEFI
itself in the space below 4Gb, then you'll be in trouble.

Probably not something needing addressing right away, but once
you get to the point of submitting a non-RFC series, you will
want to mention this as a restriction.

Jan