Re: [Xen-devel] [PATCH 0 of 2] Support for Paging/Sharing on AMD

["Andres Lagar-Cavilla" <andres@xxxxxxxxxxxxxxxx>]

> At 11:43 -0400 on 27 Mar (1332848606), Andres Lagar-Cavilla wrote:
>> This is a partial repost of the series first sent on Mar 22nd.
>>
>> It currently contains two patches
>> - Teach paging types to p2m-pt.
>> - Add interlock for iommu and mem paging/sharing.
>>
>> The first patch is rebased to apply on top of
>> http://lists.xen.org/archives/html/xen-devel/2012-03/msg01982.html
>> and addresses some feedbackfrom Tim Deegan.
>>
>> The second patch prevents a passthrough device from being assigned to a
>> domain
>> if mem paging or sharing have been turned on. And viceversa. This is a
>> missing
>> check that is necessary for both Intel and AMD processors.
>>
>> Signed-off-by: Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx>
>
> Applied, thanks.

Great, thanks.

The question now is what to do for AMD+paging in Xen 4.2. It works
partially, there are still VMEXIT_shutdown hvm crashes happening with pv
drivers.

I see two options
- leave as is, disabled
- enable it and tag it experimental (printk, documentation, etc)

The patch for option 2 is straight-forward. Thoughts?
Andres

>
> Tim.
>
>



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