linux-kernel - Re: [PATCH v5 8/9] x86-64: Emulate legacy vsyscalls

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Message-ID: <20110608100612.GJ27166@one.firstfloor.org>
Date:	Wed, 8 Jun 2011 12:06:12 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	pageexec@...email.hu
Cc:	Andi Kleen <andi@...stfloor.org>, Ingo Molnar <mingo@...e.hu>,
	Andrew Lutomirski <luto@....edu>, x86@...nel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org, Jesper Juhl <jj@...osbits.net>,
	Borislav Petkov <bp@...en8.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Jan Beulich <JBeulich@...ell.com>,
	richard -rw- weinberger <richard.weinberger@...il.com>,
	Mikael Pettersson <mikpe@...uu.se>,
	Brian Gerst <brgerst@...il.com>,
	Louis Rilling <Louis.Rilling@...labs.com>,
	Valdis.Kletnieks@...edu
Subject: Re: [PATCH v5 8/9] x86-64: Emulate legacy vsyscalls

> 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@...ux.intel.com -- Speaking for myself only.
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