Re: [Linux-ia64] [PATCH] Performance Patch for TLB misses

From: David Mosberger <davidm_at_napali.hpl.hp.com>
Date: 2002-11-08 03:38:08
>>>>> 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.

	--david
Received on Thu Nov 07 08:39:43 2002

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