linux-kernel - Re: [PATCH] x86-64, vsyscalls: Rename UNSAFE_VSYSCALLS to COMPAT

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Date:	Tue, 7 Jun 2011 12:13:15 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	pageexec@...email.hu
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andy 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>,
	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>,
	Andi Kleen <andi@...stfloor.org>,
	Brian Gerst <brgerst@...il.com>,
	Louis Rilling <Louis.Rilling@...labs.com>,
	Valdis.Kletnieks@...edu, Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [PATCH] x86-64, vsyscalls: Rename UNSAFE_VSYSCALLS to
 COMPAT_VSYSCALLS


* pageexec@...email.hu <pageexec@...email.hu> wrote:

> > You generally seem to assume that security is an absolute goal 
> > with no costs attached.
> 
> quote me on that back please or admit you made this up. [...]

Just one quick example of your delusion:

   |
   | "a page fault is never a fast path"
   |

   (PageExec, Jun 6, 2011)

   http://lkml.org/lkml/2011/6/6/209

I think that sentence will become a classic quote to chuckle about.

Thanks,

	Ingo
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