Re: [PATCH v6 00/27] x86, boot, 64bit: Add support for loading ramdiskand bzImage above 4G

[H. Peter Anvin]

There are obviously good bits to this patchset, but I'm really starting 
to think the "pseudo-linear mode" via a trap handler -- meaning we can 
access all of memory without any extra effort -- makes more sense.  In 
fact, that way we could just build the full page tables without worrying 
about incremental bootstrap, depending on if that is a complexity win or 
not.

Either way, this is for native only: the Xen domain builder or other 
similar entry paths should be setting up page tables that cover all of 
memory; I'm hoping Konrad and Stefano can confirm this.

The only reason to go with another approach I can think of is if it 
makes 32/64-bit unification cleaner.

	-hpa

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