Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757445Ab3FTJWp (ORCPT ); Thu, 20 Jun 2013 05:22:45 -0400 Received: from mail-ea0-f170.google.com ([209.85.215.170]:51618 "EHLO mail-ea0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757397Ab3FTJWl (ORCPT ); Thu, 20 Jun 2013 05:22:41 -0400 Date: Thu, 20 Jun 2013 11:22:37 +0200 From: Ingo Molnar To: Matthew Garrett Cc: Borislav Petkov , Linux EFI , Matt Fleming , X86 ML , LKML , Borislav Petkov Subject: Re: [PATCH -v2 0/4] EFI 1:1 mapping Message-ID: <20130620092237.GA6943@gmail.com> References: <1371491416-11037-1-git-send-email-bp@alien8.de> <20130619125243.GD11209@gmail.com> <20130619130225.GA28311@pd.tnic> <20130619130434.GB24957@gmail.com> <20130619160804.GB27832@srcf.ucam.org> <20130620091321.GB6811@gmail.com> <20130620091537.GA17159@srcf.ucam.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130620091537.GA17159@srcf.ucam.org> 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 Content-Length: 1289 Lines: 31 * Matthew Garrett wrote: > On Thu, Jun 20, 2013 at 11:13:21AM +0200, Ingo Molnar wrote: > > > Cool - and supposedly this will work in a Mac environment as well? Would > > be very nice to avoid fundamentally fragile system specific quirks for > > something as fundamental as the EFI runtime memory mapping model ... > > Apple is the only case where I'd expect there to be an issue, since they > only started supporting booting Windows via UEFI on very recent systems. > However, unless they're actually sniffing the page tables on UEFI entry, > I can't see any way that this could break things??? Agreed - I was susprised to see that the runtime was able to _break_ in any way due to 1:1: my assumption was that it can only get better. But I did not realize that the 1:1 boot flag also changed what was passed down, which probably explains the breakages. I'd even argue to not do this whole boot flag thing at all - just standardize on the Windows compatibility model as closely as possible. Thanks, Ingo -- 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/