Xen devel - Feb 2007 - [PATCH] Mini-OS return from exception fix

This patch fixes ret_from_exception routine. Stack consistency is now 
preserved.

Signed-off-by: Grzegorz Milos <gm281@cam.ac.uk>

Keir could you apply? Thanks.

Gregor
> I''ve modified minios to do dynamic page fault handling rather than
setup
> all the page tables ahead of time (just to improve my understanding) but 
> it''s crashing on return and looks like the stack may be wrong.
Before I
> dive in the assembler code, is the code in x86_32.S at page_fault and 
> ret_from_exception expected to work if the fault is fixed up?
> 


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