Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753872AbYCQSwy (ORCPT ); Mon, 17 Mar 2008 14:52:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752026AbYCQSwq (ORCPT ); Mon, 17 Mar 2008 14:52:46 -0400 Received: from wx-out-0506.google.com ([66.249.82.227]:16569 "EHLO wx-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752016AbYCQSwp (ORCPT ); Mon, 17 Mar 2008 14:52:45 -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=rWFtB/QdSnfBl0BP/OkdcQZ5pR072cG2i8PPlXrfYvhxU7IfKd/ZgR99332aZNJHrfO6Vu/zE/ShyqBgld23Snl6b6ozdV5GMxP+WUZcR3xX0k1TyzL5PVnMKRWvlP2KVxcV8ih/wNGvr+nltmiBekcPm5rkSCdQoOwr727hWvQ= Message-ID: <86802c440803171152y379560dfp1296aefb0b86b54b@mail.gmail.com> Date: Mon, 17 Mar 2008 11:52:43 -0700 From: "Yinghai Lu" To: "Andi Kleen" Subject: Re: [PATCH] [11/18] Fix alignment bug in bootmem allocator Cc: linux-kernel@vger.kernel.org, pj@sgi.com, linux-mm@kvack.org, nickpiggin@yahoo.com.au In-Reply-To: <20080317085604.GA12405@basil.nowhere.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20080317258.659191058@firstfloor.org> <20080317015825.0C0171B41E0@basil.firstfloor.org> <86802c440803161919h20ed9f78k6e3798ef56668638@mail.gmail.com> <20080317070208.GC27015@one.firstfloor.org> <86802c440803170017r622114bdpede8625d1a8ff585@mail.gmail.com> <86802c440803170031u75167e5m301f65049b6d62ff@mail.gmail.com> <20080317074146.GG27015@one.firstfloor.org> <86802c440803170053n32a1c918h2ff2a32abef44050@mail.gmail.com> <20080317085604.GA12405@basil.nowhere.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1231 Lines: 34 On Mon, Mar 17, 2008 at 1:56 AM, Andi Kleen wrote: > > only happen when align is large than alignment of node_boot_start. > > Here's an updated version of the patch with this addressed. > Please review. The patch is somewhat more complicated, but > actually makes the code a little cleaner now. > > -Andi > > > Fix alignment bug in bootmem allocator > > > Without this fix bootmem can return unaligned addresses when the start of a > node is not aligned to the align value. Needed for reliably allocating > gigabyte pages. > > I removed the offset variable because all tests should align themself correctly > now. Slight drawback might be that the bootmem allocator will spend > some more time skipping bits in the bitmap initially, but that shouldn't > be a big issue. > > > Signed-off-by: Andi Kleen > how about create local node_boot_start and node_bootmem_map that make sure node_boot_start has bigger alignment than align input. 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/