Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266300AbTGJMJx (ORCPT ); Thu, 10 Jul 2003 08:09:53 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S269240AbTGJMJx (ORCPT ); Thu, 10 Jul 2003 08:09:53 -0400 Received: from asplinux.ru ([195.133.213.194]:14086 "EHLO relay.asplinux.ru") by vger.kernel.org with ESMTP id S266300AbTGJMJq (ORCPT ); Thu, 10 Jul 2003 08:09:46 -0400 Content-Type: text/plain; charset=US-ASCII From: Kirill Korotaev Organization: SW Soft To: Russell King Subject: Re: [announce, patch] 4G/4G split on x86, 64 GB RAM (and more) support Date: Thu, 10 Jul 2003 16:33:06 +0400 User-Agent: KMail/1.4.2 References: <200307101450.42340.dev@sw.ru> <20030710123529.A6866@flint.arm.linux.org.uk> In-Reply-To: <20030710123529.A6866@flint.arm.linux.org.uk> Cc: linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Message-Id: <200307101633.06912.dev@sw.ru> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 627 Lines: 17 Hi! > I haven't read the patches, but this caught my attention. > > Wasn't the use of cr3 there to ensure that we used the right page tables > when fixing up page faults occuring in the middle of a context switch for > interrupt handlers in kernel modules? When 4gb split is used cr3 always(!) points to swapper pgdir when kernel code is executing, so it is not an issue. Kirill - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/