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Date: Wed, 8 Jun 2011 12:06:12 +0200
From: Andi Kleen <andi@firstfloor.org>
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Cc: Andi Kleen <andi@firstfloor.org>, Ingo Molnar <mingo@elte.hu>,
        Andrew Lutomirski <luto@mit.edu>, x86@kernel.org,
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Subject: Re: [PATCH v5 8/9] x86-64: Emulate legacy vsyscalls
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> eventually may even go away as time progresses and
> linux systems begin to fully rely on the vdso instead.

That assumes that everyone uses glibc and also updates their userland. 
As pointed out many times that's a deeply flawed assumption.

-Andi
-- 
ak@linux.intel.com -- Speaking for myself only.