Re: [PATCH] kexec based hibernation: a prototype of kexecmulti-stage load

From: Pavel Machek
Date: Fri May 16 2008 - 07:57:58 EST


> > During loading, a hash table mapped from destination page to source
> > page is used instead of original linear mapping
> > implementation. Because the hibernated image may be very large (up to
> > near the size of physical memory), it is very time-consuming to search
> > a source page given the destination page, which is used to check
> > whether an newly allocated page is in the range of allocated
> > destination pages.
> This seems to be an optimization of kexec so that it becomes efficient
> in loading large images (containing large number of segments). Probably
> this can be a separate patch.
> IMHO, we can just first write a minimal patch where one can just switch
> between kernels. Once that patch is upstream, we can enhance

Yes, please.
(cesky, pictures)
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