Re: [Xen-devel] [PATCH for-4.10] libxc: load acpi RSDP table at correct address

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 20.11.17 at 12:20, <jgross@xxxxxxxx> wrote:
> Which restriction? I'm loading the RSDP table to its architectural
> correct addres if possible, otherwise it will be loaded to the same
> address as without my patch. So I'm not adding a restriction, but
> removing one.

What is "architecturally correct" in PVH can't be read out of
specs other than what we write down. When there's no BIOS,
placing anything right below the 1Mb boundary is at least
bogus.

As to the prior grub2 discussion you refer to - just like Andrew
I don't think I was really involved here. If it resulted in any
decisions affecting the PVH ABI, I think it would be a good idea
to summarize the outcome, and perhaps even submit a patch
adding respective documentation (e.g. by way of comment in
public headers). That'll then allow non-grub Xen folks (like
Andrew and me) to see what you're intending to do (and of
course there would be the risk of someone disagreeing with
what you had come up with while discussing this on the grub
side).

Jan


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