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Re: [PATCH 3/7] xen/p2m: put reference for superpage


  • To: Julien Grall <julien@xxxxxxx>
  • From: Luca Fancellu <Luca.Fancellu@xxxxxxx>
  • Date: Tue, 14 May 2024 07:55:33 +0000
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  • Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Penny Zheng <Penny.Zheng@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Bertrand Marquis <Bertrand.Marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
  • Delivery-date: Tue, 14 May 2024 07:55:55 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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  • Thread-topic: [PATCH 3/7] xen/p2m: put reference for superpage

Hi Julien,

> 
>> Note also that a foreign unmap resulting in a page free is also not
>> the common case, as that should only happen when the foreign domain
>> has been destroyed, or the page ballooned out, so to benchmark the
>> worst case some effort will be needed in order to model this
>> scenario.
> 
> Good callout. It may be easier to reproduce it with some XTF tests. 
> Unfortunately, I don't have the bandwith to look at it. Maybe Luca can?

Unfortunately I don’t have bandwidth for that,

> 
> Otherwise, we may have to accept not supporting 1GB superpage for the time 
> being for shared memory.

I will try to do it. 

Cheers,
Luca


 


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