From: Christian Hildner <christian.hildner@hob.de>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] [PATCH] Performance Patch for TLB misses
Date: Mon, 11 Nov 2002 08:38:54 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105590709805379@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590709805350@msgid-missing>
David Mosberger schrieb:
> >>>>> On Thu, 07 Nov 2002 15:00:27 +0100, Christian Hildner <christian.hildner@hob.de> said:
>
> Christian> - let the processor also check for privilege level
> Christian> because it's very very rare
>
> I didn't look at the patch too closely but this change looks wrong.
> It would let user level insert arbitrary identity-mapped TLB
> translations, which is not safe because it can trigger memory
> attribute aliasing.
Yes, user level would be allowed to insert translations. But the page attributes are hardcoded
(PAGE_KERNEL) and this will not allow the user to touch this pages.
Christian
next prev parent reply other threads:[~2002-11-11 8:38 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-07 14:00 [Linux-ia64] [PATCH] Performance Patch for TLB misses Christian Hildner
2002-11-07 16:38 ` David Mosberger
2002-11-07 17:14 ` Mario Smarduch
2002-11-11 8:38 ` Christian Hildner [this message]
2002-11-11 8:49 ` Christian Hildner
2002-11-11 12:07 ` John Marvin
2002-11-11 18:48 ` David Mosberger
2002-11-12 8:43 ` Christian Hildner
2002-11-12 17:00 ` David Mosberger
2002-11-12 18:03 ` David Mosberger
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