Re: [RFC, PATCH 7/24] i386 Vmi memory hole

[Zachary Amsden]

Gerd Hoffmann wrote:
> >        pushl $SYSENTER_RETURN
> >
> > SYSENTER_RETURN is a link time constant that is defined based on the
> > location of the vsyscall page.  If the vsyscall page can move, this can
> > not be a constant.
> >     
>
> The vsyscall page is at PAGE_OFFSET - 2*PAGE_SIZE.  It doesn't move.  At
> least not at runtime.  At compile time it can change with the new
> VMSPLIT config options, but that isn't a problem ;)
>   

Okay, I get it now.  Thanks for the explanation.  This certainly does 
simplify the problem.

Zach
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