From: Andrea Arcangeli <andrea@cpushare.com>
To: Andi Kleen <ak@suse.de>
Cc: linux-kernel@vger.kernel.org, Andrew Morton <akpm@osdl.org>
Subject: Re: disable tsc with seccomp
Date: Mon, 21 Nov 2005 18:38:55 +0100 [thread overview]
Message-ID: <20051121173855.GI14746@opteron.random> (raw)
In-Reply-To: <20051121172444.GB20775@brahms.suse.de>
On Mon, Nov 21, 2005 at 06:24:44PM +0100, Andi Kleen wrote:
> I don't believe theoretical, unlikely to be usable in any way
Demonstrate it if you can.
The fact is that the closest thing to a demonstration that we have,
demonstrated the opposite of what you claim, so you'll have an hard
time to convince me about your point given you've no way to demonstrate
it.
I can guarantee that my machine is safe by running top, the only thing
that escapes the easy "top" check is CPUShare and I want to fix it,
since I can.
> And in addition your change doesn't even close that channel
> in theory.
The the PCE is red herring, since it's a zero-cost addition.
next prev parent reply other threads:[~2005-11-21 17:39 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-05 13:47 disable tsc with seccomp Andrea Arcangeli
2005-11-05 15:37 ` Andi Kleen
2005-11-05 16:07 ` Andrea Arcangeli
2005-11-05 16:12 ` Andi Kleen
2005-11-05 16:31 ` Andrea Arcangeli
2005-11-05 17:04 ` Andi Kleen
2005-11-06 1:55 ` Andrea Arcangeli
2005-11-21 16:43 ` Andrea Arcangeli
2005-11-21 17:05 ` Andi Kleen
2005-11-21 17:16 ` Andrea Arcangeli
2005-11-21 17:24 ` Andi Kleen
2005-11-21 17:38 ` Andrea Arcangeli [this message]
2005-11-21 18:40 ` Andrea Arcangeli
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