From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751020AbdLGIRQ (ORCPT ); Thu, 7 Dec 2017 03:17:16 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:40792 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750781AbdLGIRP (ORCPT ); Thu, 7 Dec 2017 03:17:15 -0500 Date: Thu, 7 Dec 2017 00:17:00 -0800 From: Matthew Wilcox To: Ingo Molnar Cc: "Kirill A. Shutemov" , Ingo Molnar , x86@kernel.org, Thomas Gleixner , "H. Peter Anvin" , Linus Torvalds , Andy Lutomirski , Cyrill Gorcunov , Borislav Petkov , Andi Kleen , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCHv4 3/4] x86/boot/compressed/64: Introduce place_trampoline() Message-ID: <20171207081659.GC2739@bombadil.infradead.org> References: <20171205135942.24634-1-kirill.shutemov@linux.intel.com> <20171205135942.24634-4-kirill.shutemov@linux.intel.com> <20171207063048.w46rrq2euzhtym3j@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171207063048.w46rrq2euzhtym3j@gmail.com> User-Agent: Mutt/1.9.1 (2017-09-22) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 07, 2017 at 07:30:48AM +0100, Ingo Molnar wrote: > > But if the bootloader put the kernel above 4G (not sure if anybody does > > this), we would loose control as soon as paging is disabled as code > > becomes unreachable. > > Yeah, so instead of the double 'as' which is syntactically right but a bit > confusing to read, how about something like: > > But if the bootloader put the kernel above 4G (not sure if anybody does > this), we would loose control as soon as paging is disabled, because the > code becomes unreachable to the CPU. btw, it's "lose control".