From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id B3C1BDE08B for ; Tue, 22 Apr 2008 17:56:58 +1000 (EST) Subject: Re: Patches added to powerpc.git master and powerpc-next branches From: Benjamin Herrenschmidt To: Kumar Gala In-Reply-To: References: <18440.34891.440661.248400@cargo.ozlabs.ibm.com> <9CE9EFA8-A303-49C9-B9A2-F62D42F927B7@kernel.crashing.org> <18441.58154.608911.337978@cargo.ozlabs.ibm.com> Content-Type: text/plain Date: Tue, 22 Apr 2008 17:56:50 +1000 Message-Id: <1208851010.9640.90.camel@pasglop> Mime-Version: 1.0 Cc: linuxppc-dev@ozlabs.org, Paul Mackerras Reply-To: benh@kernel.crashing.org List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, 2008-04-21 at 12:51 -0500, Kumar Gala wrote: > I'm not clear on why this is needed. I can see value in having the > PGD entry in place but the pte PAs would be changing all the time so > I > don't see what benefit there is in keeping them in one page. Because they are accessed as an array by the C code ? Ben.