Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752859Ab1EIHHW (ORCPT ); Mon, 9 May 2011 03:07:22 -0400 Received: from router-fw.net-space.pl ([89.174.63.77]:40083 "EHLO router-fw.net-space.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752550Ab1EIHHV (ORCPT ); Mon, 9 May 2011 03:07:21 -0400 Date: Mon, 9 May 2011 09:06:59 +0200 From: Daniel Kiper To: Stefano Stabellini Cc: Konrad Rzeszutek Wilk , Daniel Kiper , "linux-kernel@vger.kernel.org" , "yinghai@kernel.org" , "hpa@zytor.com" , "xen-devel@lists.xensource.com" Subject: Re: [PATCH 1/2] xen/mmu: Add workaround "x86-64, mm: Put early page table high" Message-ID: <20110509070659.GA17552@router-fw-old.local.net-space.pl> References: <1304356942-17656-1-git-send-email-konrad.wilk@oracle.com> <1304356942-17656-2-git-send-email-konrad.wilk@oracle.com> <20110503005527.GA6735@router-fw-old.local.net-space.pl> <20110503151206.GA8868@dumpdata.com> <20110503195141.GA15775@router-fw-old.local.net-space.pl> <20110504185903.GA29903@router-fw-old.local.net-space.pl> <20110505140124.GD4386@dumpdata.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.3.28i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 971 Lines: 21 On Thu, May 05, 2011 at 03:06:18PM +0100, Stefano Stabellini wrote: > On Thu, 5 May 2011, Konrad Rzeszutek Wilk wrote: > > > In any case you are right about the fact that the change is not needed > > > on X86_32 so if it has any bad side effects on X86_32 we can always do > > > > Why not? Can't you boot a 32-bit Dom0 on those machines? > > Because e820_end_of_low_ram_pfn() is not called on 32-bit, > find_low_pfn_range() is called instead and works differently. > AFAICT find_low_pfn_range() is not affected by the issue described in > the previous email. Yes, you are right. Additionally, I tested your patch with my amendments ealier and it works on i386. I am going to prepare relevant patch today or tomorrow. Daniel -- 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/