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

[Sander Eikelenboom <linux@xxxxxxxxxxxxxx>]

On 19/02/18 22:13, Sander Eikelenboom wrote:
> On 19/02/18 11:16, Juergen Gross wrote:
>> On 19/02/18 10:47, Sander Eikelenboom wrote:
>>> On 24/01/18 16:26, George Dunlap wrote:
>>>> On Wed, Jan 24, 2018 at 3:20 PM, Juergen Gross <jgross@xxxxxxxx> wrote:
>>>>> On 24/01/18 16:07, George Dunlap wrote:
>>>>>> On Wed, Jan 24, 2018 at 2:10 PM, Boris Ostrovsky
>>>>>> <boris.ostrovsky@xxxxxxxxxx> wrote:
>>>>>>> On 01/24/2018 07:06 AM, Juergen Gross wrote:
>>>>>>>> On 24/01/18 11:54, Roger Pau Monné wrote:
>>>>>>>>> On Wed, Jan 24, 2018 at 10:42:39AM +0000, George Dunlap wrote:
>>>>>>>>>> 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?
>>>>>>>
>>>>>>>
>>>>>>> AFAIK PVH is still considered a tech preview --- Linux or Xen.
>>>>>>
>>>>>> From SUPPORT.md:
>>>>>>
>>>>>> ### x86/PVH guest
>>>>>>
>>>>>>     Status: Supported
>>>>>>
>>>>>> I was under the impression that PVH guest in Linux was complete and
>>>>>> stable as of Linux 4.11.  If that's not true it should have been
>>>>>> brought up during the 4.10 development cycle, where we declared PVH
>>>>>> domUs as "supported".
>>>>>
>>>>> So what is the problem here?
>>>>>
>>>>> - current Linux can't be booted as PVH guest with xen-unstable due to
>>>>>   a bug in Linux, patches for Linux are being worked on
>>>>> - booting Linux as PVH guest with xen 4.10 is working
>>>>
>>>> I was responding to Boris's claim that PVH is considered tech preview.
>>>> I can't say anything one way or the other about PVH in Linux, but PVH
>>>> in Xen is definitely now considered supported.
>>>>
>>>> My subsequent response to Roger ("FWIW I can buy this argument") was
>>>> meant to indicate I didn't have any more objection to the approach you
>>>> guys were planning on taking.
>>>>
>>>>  -George
>>>
>>> L.S.,
>>>
>>> Seems I lost track, is there any progress on this issue ?
>>> (doesn't seem a fix has landed in 4.16-rc2 yet).
>>
>> Just sent a new patch series.
> 
> Just tested and it works fine here.

Hi Juergen,

I don't know by which tree those patches should arrive at Linus,
so i can't check if they fell through the cracks somewhere, but 4.16-rc5
hasn't got them yet.

--
Sander


> 
> --
> Sander
> 
>>
>> Juergen
>>
> 


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