From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Young Subject: Re: [PATCH] export efi.flags to sysfs Date: Wed, 28 May 2014 17:47:12 +0800 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 Return-path: Content-Disposition: inline In-Reply-To: <20140528020935.GB2820@darkstar.nay.redhat.com> Sender: linux-kernel-owner@vger.kernel.org To: "Fleming, Matt" Cc: "bp@alien8.de" , "linux-kernel@vger.kernel.org" , "linux-efi@vger.kernel.org" , vgoyal@redhat.com, Alex Thorlton List-Id: linux-efi@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