From: Rusty Russell <rusty@rustcorp.com.au>
Date: Mon, 22 Oct 2007 01:03:36 +0000 (+1000)
Subject: Boot with virtual == physical to get closer to native Linux.
X-Git-Tag: v2.6.24-rc1~28^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=47436aa4ad054c1c7c8231618e86ebd9305308dc;p=pandora-kernel.git

Boot with virtual == physical to get closer to native Linux.

1) This allows us to get alot closer to booting bzImages.

2) It means we don't have to know page_offset.

3) The Guest needs to modify the boot pagetables to create the
   PAGE_OFFSET mapping before jumping to C code.

4) guest_pa() walks the page tables rather than using page_offset.

5) We don't use page_offset to figure out whether to emulate: it was
   always kinda quesationable, and won't work for instructions done
   before remapping (bzImage unpacking in particular).

6) We still want the kernel address for tlb flushing: have the initial
   hypercall give us that, too.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
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