linux-kernel - Re: [patch] paravirt: VDSO page is essential

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Date:	Mon, 05 Mar 2007 15:03:13 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Roland McGrath <roland@...hat.com>
CC:	Andi Kleen <ak@...e.de>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	Jan Beulich <jbeulich@...ell.com>
Subject: Re: [patch] paravirt: VDSO page is essential

Roland McGrath wrote:
>> Jan Beulich just posted a patch to do just this - relocate the vdso's
>> ELF header.  If that's all that's really required to keep COMPAT_VDSO
>> viable under PARAVIRT, then it seems like the way to go.
>>     
>
> I found http://marc.theaimsgroup.com/?l=xen-devel&m=117309332600075&w=2 and
> that must be the one you meant.  The ELF-grokking form of that is exactly
> what I had in mind.  The "find relocs with cmp" scheme is pretty silly, but
> also works fine.  It trades tweaky ELF knowledge with tweaky fragile build
> methods, but it's all about the same to me.  
>   

That's the one.  I think the C version is the one to go with.

    J
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