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

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Message-ID: <45ECC91D.1020809@vmware.com>
Date:	Mon, 05 Mar 2007 17:51:25 -0800
From:	Zachary Amsden <zach@...are.com>
To:	Jeremy Fitzhardinge <jeremy@...p.org>
CC:	Rusty Russell <rusty@...tcorp.com.au>,
	virtualization <virtualization@...ts.osdl.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Ingo Molnar <mingo@...e.hu>,
	Roland McGrath <roland@...hat.com>,
	linux-kernel@...r.kernel.org, Jan Beulich <jbeulich@...ell.com>
Subject: Re: [patch] paravirt: VDSO page is essential

Jeremy Fitzhardinge wrote:
> I think Jan's approach is better if it works (since there's no
> compromise), but this is better if you want to get something working in
> the near term.
>   

Is Jan dynamically relinking the vdso at runtime?  Because that is what 
we will need.  Adding support for COMPAT_VDSO creates a major 
performance problem for us.  We need a way to force the VDSO to be 
enabled with a boot parameter.

Zach
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