Re: [Xen-devel] [PATCH v3 3/3] tools/libxc: use superpages during restore of HVM guest

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Fri, Aug 25, 2017 at 02:51:01PM +0200, Olaf Hering wrote:
> On Fri, Aug 25, Wei Liu wrote:
> 
> > I'm still unconvinced this works all the time because it still needs the
> > assumption that the stream contains contiguous pfns.
> 
> This is how it is done today. If the pfns start to arrive in another
> order the format has to be changed to send a memory layout in advance.
> 

Maybe a middle ground is to scan the batch to see if pfns can be fit
into a whole super page? I don't think you can get a batch as big as 1G
but there should be a lot of 2M batches?

> I will check if some sort of retry logic can be added.
> 

This would be useful too.

> 
> Olaf



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