From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paul Mackerras MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15771.30104.815144.546550@argo.ozlabs.ibm.com> Date: Thu, 3 Oct 2002 08:39:20 +1000 (EST) Subject: Re: [PATCH] Snapshot of shared page tables In-Reply-To: <45850000.1033570655@baldur.austin.ibm.com> References: <45850000.1033570655@baldur.austin.ibm.com> Sender: owner-linux-mm@kvack.org Return-Path: To: Dave McCracken Cc: Linux Memory Management , Linux Kernel List-ID: Dave McCracken writes: > Ok, here it is. This patch works for my simple tests, both under UP and > SMP, including under memory pressure. I'd appreciate anyone who'd like to > take it and beat on it. Please let me know of any problems you find. Interesting. I notice that you are using the _PAGE_RW bit in the PMDs. Are you relying on the hardware to do anything with that bit, or is it only used by software? (If you are relying on the hardware to do something different when _PAGE_RW is clear in the PMD, then your approach isn't portable.) Paul. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/