Re: [RFC] [PATCH V2] Adding DTB to architecture independent vmlinux

[David Gibson <david-xT8FGy+AXnRB3Ne2BGzF6laj5H9X9Tb+@public.gmane.org>]

On Thu, Oct 28, 2010 at 02:44:47PM -0700, H. Peter Anvin wrote:
> On 10/28/2010 10:32 AM, David VomLehn wrote:
> > 
> > In my case, where there are a lot of up-front reservations of memory
> > at a static address, there is a fair amount of work to do before
> > it's possible to do the dynamic address allocation for the blob's
> > ultimate destination, but I'm okay with either doing blob size and address
> > rounding or copying it from init. I don't see a benefit of supporting
> > multiple approaches for Linux.
> > 
> 
> The reason I mentioned dynamic allocation is that you still need to do
> dynamic allocation if you're using a blob from an external source.  If
> you don't end up with pointers *into* the blob, though, then you don't
> need to do the relocation until some time before you jettison the init
> section.

The way the dtb format is designed, you should almost never work with
pointers into the the middle of the blob.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
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