Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934831Ab3DOF5P (ORCPT ); Mon, 15 Apr 2013 01:57:15 -0400 Received: from www.sr71.net ([198.145.64.142]:47580 "EHLO blackbird.sr71.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933788Ab3DOF5O (ORCPT ); Mon, 15 Apr 2013 01:57:14 -0400 Message-ID: <516B9714.80007@sr71.net> Date: Sun, 14 Apr 2013 22:58:44 -0700 From: Dave Hansen User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/17.0 Thunderbird/17.0 MIME-Version: 1.0 To: HATAYAMA Daisuke CC: "H. Peter Anvin" , "kexec@lists.infradead.org" , Linux Kernel Mailing List , Cliff Wickman , Simon Horman , "Eric W. Biederman" , Yinghai Lu , Thomas Renninger , Vivek Goyal Subject: Re: [PATCH 5/5] kexec: X86: Pass memory ranges via e820 table instead of memmap= boot parameter References: <1365683207-42425-1-git-send-email-trenn@suse.de> <1365683207-42425-6-git-send-email-trenn@suse.de> <5166D18A.7090800@zytor.com> <20130412143104.GA4301@redhat.com> <5168208B.7050107@zytor.com> <51688803.8020401@sr71.net> <516B87A6.9080708@jp.fujitsu.com> In-Reply-To: <516B87A6.9080708@jp.fujitsu.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 751 Lines: 19 On 04/14/2013 09:52 PM, HATAYAMA Daisuke wrote: > This sounds like there's no such issue on x86 cache mechanism. Is it > correct? If so, what is the difference between ia64 and x86 cache > mechanisms? I'm just going by the code comments: drivers/char/mem.c > /* > * On ia64 if a page has been mapped somewhere as uncached, then > * it must also be accessed uncached by the kernel or data > * corruption may occur. > */ -- 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/