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

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 11/20/2017 06:50 AM, Jan Beulich wrote:
>>>> 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.

Unless it's a UEFI boot -- where else would you put it? Aren't these two
(UEFI and non-UEFI) the only two options that the ACPI spec provides?

-boris

>
> 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
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxx
> https://lists.xen.org/xen-devel


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel