From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 12 Jan 2001 16:14:40 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 12 Jan 2001 16:14:30 -0500 Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:273 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id ; Fri, 12 Jan 2001 16:14:12 -0500 From: Russell King Message-Id: <200101122111.f0CLBhL10716@flint.arm.linux.org.uk> Subject: Re: Subtle MM bug To: ebiederm@xmission.com (Eric W. Biederman) Date: Fri, 12 Jan 2001 21:11:43 +0000 (GMT) Cc: ralf@conectiva.com.br (Ralf Baechle), riel@nl.linux.org, andrea@suse.de (Andrea Arcangeli), linux-kernel@vger.kernel.org In-Reply-To: from "Eric W. Biederman" at Jan 12, 2001 09:10:54 AM X-Location: london.england.earth.mulky-way.universe X-Mailer: ELM [version 2.5 PL3] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Eric W. Biederman writes: > Hmm. I would think that increasing the logical page size in the kernel > would be the trivial way to handle virtual aliases. (i.e.) with a large > enough page size you can't actually have a virtual alias. There are types of caches out there that no matter how large the page size, you will always have alias issues. These are ones where the cache lines are indexed independent of virtual address (and therefore can have funny cache line replacement algorithms). And yes, you guessed which processor has it. ;) (Sorry the CC list got trimmed, elm ate some of it. I'm sure most of the people who where on it were on lkml anyway) _____ |_____| ------------------------------------------------- ---+---+- | | Russell King rmk@arm.linux.org.uk --- --- | | | | http://www.arm.linux.org.uk/personal/aboutme.html / / | | +-+-+ --- -+- / | THE developer of ARM Linux |+| /|\ / | | | --- | +-+-+ ------------------------------------------------- /\\\ | - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/