From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754079AbaAaKHk (ORCPT ); Fri, 31 Jan 2014 05:07:40 -0500 Received: from mail.skyhub.de ([78.46.96.112]:39016 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751006AbaAaKHh (ORCPT ); Fri, 31 Jan 2014 05:07:37 -0500 Date: Fri, 31 Jan 2014 11:07:22 +0100 From: Borislav Petkov To: "H. Peter Anvin" Cc: Alex Thorlton , Matt Fleming , Russ Anderson , linux-kernel@vger.kernel.org Subject: Re: [BUG] Linux 3.14 fails to boot with new EFI changes Message-ID: <20140131100722.GA21873@pd.tnic> References: <20140124184842.GD11788@pd.tnic> <20140124191709.GT18196@sgi.com> <20140127222129.GK6839@pd.tnic> <20140128110552.GA815@pd.tnic> <20140128200754.GZ18196@sgi.com> <20140128225905.GN815@pd.tnic> <20140128234036.GB18196@sgi.com> <20140129141822.GC24887@pd.tnic> <20140130221950.GJ3105@sgi.com> <52EAD0F2.7090101@zytor.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <52EAD0F2.7090101@zytor.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 On Thu, Jan 30, 2014 at 02:23:46PM -0800, H. Peter Anvin wrote: > On 01/30/2014 02:19 PM, Alex Thorlton wrote: > > > > The quick answer is I think it is a virtual address, because it does > > not work in physical mode. If you ever see "virtefi" on the RHEL > > bootline it is because RH switched the default to physical mode, > > which caused UV to not boot. "virtefi" forced it back to virtual > > mode. > > > That is interesting, as it is definitely not the direction we have been > going in within the Linux community. Right, for the new scheme to work, we'll have to map the region containing the code for uv_systab->function in order to do all those uv_bios_call()'s. Physical/virtual shouldn't matter all that much because we map the region *both* as a 1:1 map and in virtual space too. Can SGI please give us a reliable way to do that during boot? Thanks. -- Regards/Gruss, Boris. Sent from a fat crate under my desk. Formatting is fine. --