From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752314AbaE1JqH (ORCPT ); Wed, 28 May 2014 05:46:07 -0400 Received: from mx1.redhat.com ([209.132.183.28]:62905 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752069AbaE1JqE (ORCPT ); Wed, 28 May 2014 05:46:04 -0400 Date: Wed, 28 May 2014 17:47:12 +0800 From: Dave Young To: "Fleming, Matt" Cc: "bp@alien8.de" , "linux-kernel@vger.kernel.org" , "linux-efi@vger.kernel.org" , vgoyal@redhat.com, Alex Thorlton Subject: Re: [PATCH] export efi.flags to sysfs Message-ID: <20140528094712.GL2820@darkstar.nay.redhat.com> References: <20140526083935.GA19682@dhcp-16-198.nay.redhat.com> <20140527030058.GB2372@darkstar.nay.redhat.com> <20140528020935.GB2820@darkstar.nay.redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140528020935.GB2820@darkstar.nay.redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add Alex to cc > > The 1:1 mapping was required to make kexec + EFI work in the first > > instance. If a machine implements the EFI 1:1 mapping, kexec should > > work. If it doesn't implement the 1:1 mapping, then it's probably not > > going to work, right? > > > > The crux of the question: are you trying to fix a regression? > > > > If not, then we just need to get SGI UV working with the EFI 1:1 > > mapping. No? Alex is working on a SGI UV fix for 1:1 mapping. Question to Alex, if userspace can get the firmware version there might be another option that kexec-tools checking the firmware version and switch to old noefi way automaticlly. Is it doable? Thanks Dave