Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754550Ab1EEOFF (ORCPT ); Thu, 5 May 2011 10:05:05 -0400 Received: from smtp.ctxuk.citrix.com ([62.200.22.115]:17385 "EHLO SMTP.EU.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754467Ab1EEOFD (ORCPT ); Thu, 5 May 2011 10:05:03 -0400 X-IronPort-AV: E=Sophos;i="4.64,319,1301875200"; d="scan'208";a="5618377" Date: Thu, 5 May 2011 15:06:18 +0100 From: Stefano Stabellini X-X-Sender: sstabellini@kaball-desktop To: Konrad Rzeszutek Wilk CC: Stefano Stabellini , 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" In-Reply-To: <20110505140124.GD4386@dumpdata.com> Message-ID: 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> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 722 Lines: 17 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. -- 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/