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Re: [patch 1/1] [PATCH] include storage keys in hibernation image.


> > I think, however, that we really should try to merge them.  The only
> > difference seems to be how the additionally allocated pages will be populated
> > and what's going to happen to their contents during restore.
> > 
> > ACPI will simply copy the NVS memory to those pages, while S390 will save
> > the relevant storage key bits in there.
> One complication to keep in mind is that we need to know which storage key
> goes to which page frame. We need something like the orig_bm/copy_bm or
> we'd have to store the pfn with the key. Simply storing the key for every
> page will make the array unnecessarily big.

How big is the overhead? In percent / in megabytes?
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