Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758150AbYFYP4n (ORCPT ); Wed, 25 Jun 2008 11:56:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751067AbYFYP4g (ORCPT ); Wed, 25 Jun 2008 11:56:36 -0400 Received: from rv-out-0506.google.com ([209.85.198.230]:20100 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750923AbYFYP4g (ORCPT ); Wed, 25 Jun 2008 11:56:36 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=Zexz42cRMv29xiZE2PeKS5MBNuWmOnBzn/u1rr1ZT4xjp6QbZv/nybM4rmaaAGT0xr 54Q4amnuUmX6N3T0IHY5VXcXmORHTbViGFRoBnyH3gGwaSL2Y3Hbq3kJ5xBGXsPzTzHW Hlk0pk70LXqOrorp6V4D4Jb2jyUSJdFjGapvQ= Message-ID: <86802c440806250856i5b6c608ag848ad78d83b2337c@mail.gmail.com> Date: Wed, 25 Jun 2008 08:56:33 -0700 From: "Yinghai Lu" To: "Bernhard Walle" Subject: Re: [PATCH 1/3] e820_update_range(): Strip size of original region Cc: x86@kernel.org, linux-kernel@vger.kernel.org, vgoyal@redhat.com, kexec@lists.infradead.org In-Reply-To: <1214395342-20375-2-git-send-email-bwalle@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1214395342-20375-1-git-send-email-bwalle@suse.de> <1214395342-20375-2-git-send-email-bwalle@suse.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1661 Lines: 39 On Wed, Jun 25, 2008 at 5:02 AM, Bernhard Walle wrote: > This patch fixes a bug in e820_update_range(): Previously, if a region was > partially covered, then e820_update_range() only added a new E820 range but > didn't update the end/size of the previous range. That lead to duplicate > covering of a region. > > Patch tested on i386 and x86-64 with patch that uses e820_update_range() > to limit the E820 map when "mem" parameter is specified on the command line. > > > Signed-off-by: Bernhard Walle > --- > arch/x86/kernel/e820.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c > index e285ea3..e466073 100644 > --- a/arch/x86/kernel/e820.c > +++ b/arch/x86/kernel/e820.c > @@ -422,6 +422,7 @@ u64 __init e820_update_range(u64 start, u64 size, unsigned old_type, > final_end = min(start + size, ei->addr + ei->size); > if (final_start >= final_end) > continue; > + ei->size -= final_end - final_start; > e820_add_region(final_start, final_end - final_start, > new_type); > real_updated_size += final_end - final_start; > -- this one is not needed, I sent one updated to Ingo, and it is in tip/setup-memory [PATCH] x86: change size if e820_update/remove_range YH -- 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/