Re: Hibernation Redesign

[Jeremy Fitzhardinge]

Jeremy Maitin-Shepard wrote:
> I don't know a whole lot about xen, but it seems that one issue with
> this approach is that it requires you run your system under a hypervisor
> at all times, which may introduce some overhead.
>   

No, I don't think that's what Al is proposing.  The kernel-internal 
interfaces we've put in place to make Xen work could be reused to do 
some of the things you're talking about.  In particular, a kernel 
running under Xen has to be able to deal with non-contiguous physical 
pages, and reusing the same pagetable hooks would allow a kexeced kernel 
to run happily out of any random assortment of pages you manage to 
allocate for it.

   J
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