Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755322AbbHXRqu (ORCPT ); Mon, 24 Aug 2015 13:46:50 -0400 Received: from mail-ig0-f176.google.com ([209.85.213.176]:35711 "EHLO mail-ig0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753881AbbHXRqq (ORCPT ); Mon, 24 Aug 2015 13:46:46 -0400 MIME-Version: 1.0 In-Reply-To: References: <1415089784-28779-1-git-send-email-daniel@numascale.com> <1415089784-28779-4-git-send-email-daniel@numascale.com> <20150821181910.GA31378@agluck-desk.sc.intel.com> <20150821202707.GA920@agluck-desk.sc.intel.com> Date: Mon, 24 Aug 2015 10:46:46 -0700 X-Google-Sender-Auth: hW4lP3bTuNMsZ1jCFHjyW9gB5BU Message-ID: Subject: Re: [PATCH v4 4/4] Use 2GB memory block size on large-memory x86-64 systems From: Yinghai Lu To: Tony Luck Cc: Daniel J Blueman , Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Bjorn Helgaas , "the arch/x86 maintainers" , Linux Kernel Mailing List , "linux-pci@vger.kernel.org" , Steffen Persvold Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 898 Lines: 22 On Fri, Aug 21, 2015 at 4:54 PM, Tony Luck wrote: > On Fri, Aug 21, 2015 at 1:50 PM, Yinghai Lu wrote: > > Still stuff going on that I don't understand here. I increased the amount of > mirrored memory in this machine which moved max_pfn to 0x7560000 > and probe_memory_block_size() picked 512MB as the memory_block_size, > which seemed plausible. > > But my kernel still crashed during boot with this value. :-( > Forcing the block size to 128M made the system boot. > > Maybe all the holes in the e820 map matter too (specifically the > alignment of the holes)? Then, what does the E820 look like? Yinghai -- 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/