Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934253AbXEESI2 (ORCPT ); Sat, 5 May 2007 14:08:28 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S934252AbXEESI2 (ORCPT ); Sat, 5 May 2007 14:08:28 -0400 Received: from terminus.zytor.com ([192.83.249.54]:56283 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934253AbXEESIX (ORCPT ); Sat, 5 May 2007 14:08:23 -0400 Message-ID: <463CC7FD.6090006@zytor.com> Date: Sat, 05 May 2007 11:07:57 -0700 From: "H. Peter Anvin" User-Agent: Thunderbird 2.0.0.0 (X11/20070419) MIME-Version: 1.0 To: Alexander van Heukelum CC: Andi Kleen , Andrew Morton , lkml Subject: Re: [PATCH] Make bootsector stub 16-bit-only (i386) References: <20070505104452.GA30944@mailshack.com> In-Reply-To: <20070505104452.GA30944@mailshack.com> X-Enigmail-Version: 0.95.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1135 Lines: 38 Acked-by: H. Peter Anvin Alexander van Heukelum wrote: > Hi! > > The x86 bzImage contains a stub to inform people that it is not possible > any more to run a Linux kernel by catting it to a floppy and then > booting from it. This was meant to be all 16-bit code. The first > instruction, however, ended up as being coded as a 16:32-bit far jump. I > assume the intention was a 16:16-bit far jump. > > This patch changes only i386. > > Greetings, > Alexander > > Signed-off-by: Alexander van Heukelum > > --- > > diff --git a/arch/i386/boot/bootsect.S b/arch/i386/boot/bootsect.S > index 011b7a4..ae9df0d 100644 > --- a/arch/i386/boot/bootsect.S > +++ b/arch/i386/boot/bootsect.S > @@ -44,7 +44,7 @@ #endif > _start: > > # Normalize the start address > - jmpl $BOOTSEG, $start2 > + jmpw $BOOTSEG, $start2 > > start2: > movw %cs, %ax - 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/