Re: [Xen-devel] [PATCH v2] libxl: put RSDP for PVH guest near 4GB

[George Dunlap <dunlapg@xxxxxxxxx>]

On Wed, Jan 24, 2018 at 2:41 AM, Boris Ostrovsky
<boris.ostrovsky@xxxxxxxxxx> wrote:
> On 01/18/2018 05:33 AM, Wei Liu wrote:
>> On Thu, Jan 18, 2018 at 11:31:32AM +0100, Juergen Gross wrote:
>>> Wei,
>>>
>>> On 01/12/17 15:14, Juergen Gross wrote:
>>>> Instead of locating the RSDP table below 1MB put it just below 4GB
>>>> like the rest of the ACPI tables in case of PVH guests. This will
>>>> avoid punching more holes than necessary into the memory map.
>>>>
>>>> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
>>>> Acked-by: Wei Liu <wei.liu2@xxxxxxxxxx>
>>> Mind applying this one?
>> Don't worry, it is in my queue.
>>
>> Will come to this and other patches I accumulated soon.
>>
>> Wei.
>
> This requires kernel changes, doesn't it?
>
> https://lists.xenproject.org/archives/html/xen-devel/2017-12/msg00714.html
>
> And this series apparently never made it to the tree.
>
> PVH guests are broken now on staging.

And the Linux side of PVH is officially supported now, right?  Which
means we need to have some way of being backwards compatible with
kernels without that patch, even if it does get  backported.

 -George

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