Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754642Ab3GOSp3 (ORCPT ); Mon, 15 Jul 2013 14:45:29 -0400 Received: from terminus.zytor.com ([198.137.202.10]:43676 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753674Ab3GOSp2 (ORCPT ); Mon, 15 Jul 2013 14:45:28 -0400 Message-ID: <51E44234.5060300@zytor.com> Date: Mon, 15 Jul 2013 11:40:52 -0700 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 MIME-Version: 1.0 To: Jeremy Fitzhardinge CC: Linus Torvalds , Ramkumar Ramachandra , LKML , Andi Kleen , Ingo Molnar , Thomas Gleixner , Eli Friedman , Jim Grosbach , Stephen Checkoway , LLVMdev Subject: Re: [PATCH] x86/asm: avoid mnemonics without type suffix References: <1373806562-30422-1-git-send-email-artagnon@gmail.com> <51E2FACA.3050801@goop.org> In-Reply-To: <51E2FACA.3050801@goop.org> X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 831 Lines: 20 On 07/14/2013 12:23 PM, Jeremy Fitzhardinge wrote: > The SDM entry for BT mentions that the instruction may touch 2 or 4 > bytes depending on the operand size, but doesn't specifically mention > that a 64 bit operation size touches 8 bytes - and it doesn't mention > anything at all about operand size and access size in BTR/BTS/BTC > (unless it's implied as part of the discussion about encoding the MSBs > of a constant bit offset in the offset of the addressing mode). Is that > an oversight? Most likely. I'll check with the people responsible for the SDM here at Intel. -hpa -- 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/