From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: Why *not* rmap, anyway? References: From: Momchil Velikov In-Reply-To: Date: 24 Apr 2002 18:16:01 +0300 Message-ID: <873cxlunym.fsf@fadata.bg> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Rik van Riel Cc: Christian Smith , Joseph A Knapka , "Martin J. Bligh" , linux-mm@kvack.org List-ID: >>>>> "Rik" == Rik van Riel writes: Rik> On 24 Apr 2002, Momchil Velikov wrote: Rik> You really need to read the pmap code and interface instead Rik> of repeating the statements made by other people. Have you Rik> ever taken a close look at the overhead implicit in the pmap Rik> layer ? >> >> Actually, on ia32, there's no reason for the pmap layer to be any >> different than the Linux radix tree. The overhead argument does not >> stand. Rik> So how do you run a pmap VM without duplicating the data from Rik> the pmap layer into the page tables ? Rik> Remember that for VM info the page tables -are- the radix tree. And the page tables -are- the pmap layer :) Regards, -velco -- 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/