Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754697Ab2JVTqj (ORCPT ); Mon, 22 Oct 2012 15:46:39 -0400 Received: from mail-bk0-f46.google.com ([209.85.214.46]:57411 "EHLO mail-bk0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752394Ab2JVTqi (ORCPT ); Mon, 22 Oct 2012 15:46:38 -0400 MIME-Version: 1.0 In-Reply-To: <20121022183858.GA31185@jshin-Toonie> References: <903a3ead-98b5-4afa-88a4-3dc723895e82@blur> <50833F30.4020802@ti.com> <20121021041858.GA14809@jshin-Toonie> <50843627.4020103@ti.com> <20121021210633.GA14311@jshin-Toonie> <508467EE.4040807@ti.com> <20121022144020.GA14425@jshin-Toonie> <20121022183858.GA31185@jshin-Toonie> Date: Mon, 22 Oct 2012 12:46:36 -0700 X-Google-Sender-Auth: zpGL0rWynBBQL_rrpOvtHLnHna0 Message-ID: Subject: Re: BUG: 1bbbbe7 (x86: Exclude E820_RESERVED regions...) PANIC on boot From: Yinghai Lu To: Jacob Shin Cc: Tom Rini , hpa@zytor.com, "linux-kernel@vger.kernel.org" , "H. Peter Anvin" , "stable@kernel.org" Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1130 Lines: 29 On Mon, Oct 22, 2012 at 11:38 AM, Jacob Shin wrote: > > Does EFI do this on above 4G memory? All the EFI BIOSes we have in house looked > to be only touching under 4G. I have no idea about it. > >> >> 2. partial page: >> E820 or user could pass memmap that is not page aligned. >> old cold will guarded by max_low_pfn and max_pfn. so the end partial >> page will be trimmed down, and memblock can one use it. >> middle partial page will still get covered by directly mapping, and >> memblock still can use them. >> Now we will not map middle partial page and memblock still try to use it >> we could get panic when accessing those pages. >> >> So I would suggest to just revert that temporary patch at this time, >> and later come out one complete patch for stable kernels. > > Hm okay, I was hoping not, but if it has to be .. It's hpa's call. -- 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/