From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S941098AbcHJTNj (ORCPT ); Wed, 10 Aug 2016 15:13:39 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:34686 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935250AbcHJTNe (ORCPT ); Wed, 10 Aug 2016 15:13:34 -0400 Date: Wed, 10 Aug 2016 14:28:26 +0200 From: Ingo Molnar To: Andy Lutomirski Cc: "H. Peter Anvin" , x86@kernel.org, Mario Limonciello , Matthew Garrett , Borislav Petkov , Matt Fleming , linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 0/5] Allow the trampoline to use EFI boot services RAM Message-ID: <20160810122826.GA3204@gmail.com> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Andy Lutomirski wrote: > As currently configured, my laptop cannot boot any existing kernel > because the real mode trampoline can't be reserved. The ranges in > which it could live are rejected by the kernel: one is EFI boot > services data and the other is above the EBDA. Ok, so I like this series - if Matt acks it I can apply it. How urgent is it? The 'laptop does not boot' aspect worries me - how frequently are systems hit by this? The approach you chose looks sufficiently robust and straightforward to me, so it ought to work fine even for x86/urgent - but we can phase it into efi/core as well if Matt prefers that. Thanks, Ingo