From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753127Ab1HITAp (ORCPT ); Tue, 9 Aug 2011 15:00:45 -0400 Received: from terminus.zytor.com ([198.137.202.10]:40439 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751537Ab1HITAn (ORCPT ); Tue, 9 Aug 2011 15:00:43 -0400 Message-ID: <4E418388.9050600@zytor.com> Date: Tue, 09 Aug 2011 13:59:20 -0500 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:5.0) Gecko/20110707 Thunderbird/5.0 MIME-Version: 1.0 To: Andy Lutomirski CC: x86@kernel.org, Andi Kleen , linux-kernel@vger.kernel.org, torvalds@linux-foundation.org, lueckintel@yahoo.com, kimwooyoung@gmail.com, Ingo Molnar , Borislav Petkov , Suresh Siddha Subject: Re: [PATCH 1/4] x86-64: Allow emulated vsyscalls from user addresses References: <135b827ce7b4e6059f11de631ea4a455e2b433be.1312899174.git.luto@mit.edu> In-Reply-To: <135b827ce7b4e6059f11de631ea4a455e2b433be.1312899174.git.luto@mit.edu> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 08/09/2011 09:27 AM, Andy Lutomirski wrote: > * > * Vectors 0 ... 31 : system traps and exceptions - hardcoded events > - * Vectors 32 ... 127 : device interrupts > - * Vector 128 : legacy int80 syscall interface > - * Vector 204 : legacy x86_64 vsyscall emulation > - * Vectors 129 ... INVALIDATE_TLB_VECTOR_START-1 except 204 : device interrupts > + * Vectors 32 ... INVALIDATE_TLB_VECTOR_START-1 : device interrupts, except: > + * Vectors 64 ... 66 : legacy x86_64 vsyscall emulation > + * Vector 128 : legacy int80 syscall interface > * Vectors INVALIDATE_TLB_VECTOR_START ... 255 : special interrupts > * Hi Andy, Was there a reason to not use the vectors in the 0x2X range? -hpa