Re: [Xen-devel] [PATCH v1] tools/libxc: use superpages during restore of HVM guest

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Wed, Aug 02, 2017 at 03:45:25PM +0200, Olaf Hering wrote:
> During creating of a HVM domU meminit_hvm() tries to map superpages.
> After save/restore or migration this mapping is lost, everything is
> allocated in single pages. This causes a performance degradition after
> migration.
> 
> Add neccessary code to preallocate a superpage for the chunk of pfns
> that is received. In case a pfn was not populated on the sending side it
> must be freed on the receiving side to avoid over-allocation.
> 
> The existing code for x86_pv is moved unmodified into its own file.
> 

Can you split this patch into several:

1. code movement
2. refactoring / introduction of new hooks
3. implementing the new algorithm

Thanks

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