Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932912Ab3CSA35 (ORCPT ); Mon, 18 Mar 2013 20:29:57 -0400 Received: from terminus.zytor.com ([198.137.202.10]:41052 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754433Ab3CSA3y (ORCPT ); Mon, 18 Mar 2013 20:29:54 -0400 Message-ID: <5147B0EC.2020907@zytor.com> Date: Mon, 18 Mar 2013 17:27:24 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130311 Thunderbird/17.0.4 MIME-Version: 1.0 To: Yinghai Lu CC: Thomas Gleixner , Ingo Molnar , WANG Chao , Vivek Goyal , "Eric W. Biederman" , linux-kernel@vger.kernel.org Subject: Re: [PATCH v3] x86, kdump: Set crashkernel_low automatically References: <514783B4.2030401@zytor.com> <1363641957-5247-1-git-send-email-yinghai@kernel.org> <51479AAD.7040209@zytor.com> In-Reply-To: X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 950 Lines: 31 On 03/18/2013 04:26 PM, Yinghai Lu wrote: > > now only have: > swiotlb overflow buffer > > v_overflow_buffer = alloc_bootmem_low_pages_nopanic( > PAGE_ALIGN(io_tlb_overflow)); > > and > /* > * When the IOMMU overflows we return a fallback buffer. This > sets the size. > */ > static unsigned long io_tlb_overflow = 32*1024; > > so it is 32K, and I round it to 8M. > So put that into prose, understandable by someone who hasn't followed this discussion (say, five years from now), and make that part of the commit. -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- 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/