Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1424167AbWKIV1r (ORCPT ); Thu, 9 Nov 2006 16:27:47 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1424199AbWKIV1r (ORCPT ); Thu, 9 Nov 2006 16:27:47 -0500 Received: from smtp-out.google.com ([216.239.45.12]:42736 "EHLO smtp-out.google.com") by vger.kernel.org with ESMTP id S1424167AbWKIV1q (ORCPT ); Thu, 9 Nov 2006 16:27:46 -0500 DomainKey-Signature: a=rsa-sha1; s=beta; d=google.com; c=nofws; q=dns; h=received:message-id:date:from:to:subject:cc:mime-version: content-type:content-transfer-encoding:content-disposition; b=gP6U0W+pNnQSlI6XMrF1pca8FFJxiyva4lcfQ5EjbbEjt+XaD2sp++lQNg8jDqG5s FK1ALQ4DwhUncP5Rp4ozg== Message-ID: <8f95bb250611091327j14cc96adwf66c0ed0ecf3b8ba@mail.gmail.com> Date: Thu, 9 Nov 2006 13:27:39 -0800 From: "Aaron Durbin" To: "Andi Kleen" Subject: [PATCH] x86_64: Fix partial page check to ensure unusable memory is not being marked usable. Cc: "Linux Kernel Mailing List" , "Mel Gorman" , "Andrew Morton" MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1131 Lines: 34 Fix partial page check in e820_register_active_regions to ensure partial pages are not being marked as active in the memory pool. Signed-off-by: Aaron Durbin --- This was causing a machine to reboot w/ an area in the e820 that was less than the page size because the upper address was being use to mark a hole as active in the memory pool. arch/x86_64/kernel/e820.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/x86_64/kernel/e820.c b/arch/x86_64/kernel/e820.c index a75c829..855b561 100644 --- a/arch/x86_64/kernel/e820.c +++ b/arch/x86_64/kernel/e820.c @@ -278,7 +278,7 @@ e820_register_active_regions(int nid, un >> PAGE_SHIFT; /* Skip map entries smaller than a page */ - if (ei_startpfn > ei_endpfn) + if (ei_startpfn >= ei_endpfn) continue; /* Check if end_pfn_map should be updated */ -- 1.4.2.GIT - 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/