Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757111Ab1EaPgT (ORCPT ); Tue, 31 May 2011 11:36:19 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:36921 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754802Ab1EaPgS (ORCPT ); Tue, 31 May 2011 11:36:18 -0400 Date: Tue, 31 May 2011 17:35:51 +0200 From: Ingo Molnar To: Andy Lutomirski Cc: x86@kernel.org, Thomas Gleixner , linux-kernel@vger.kernel.org, Jesper Juhl , Borislav Petkov , Linus Torvalds , Andrew Morton , Arjan van de Ven , Jan Beulich , richard -rw- weinberger , Mikael Pettersson , Andi Kleen Subject: Re: [PATCH v4 08/10] x86-64: Emulate legacy vsyscalls Message-ID: <20110531153551.GA30353@elte.hu> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-08-17) X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.3.1 -2.0 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 799 Lines: 26 * Andy Lutomirski wrote: > +#ifdef CONFIG_X86_64 > +# define VSYSCALL_EMU_VECTOR 0xcc > +#endif > --- a/arch/x86/kernel/traps.c > +++ b/arch/x86/kernel/traps.c > @@ -872,6 +872,10 @@ void __init trap_init(void) > set_bit(SYSCALL_VECTOR, used_vectors); > #endif > > + BUG_ON(test_bit(VSYSCALL_EMU_VECTOR, used_vectors)); > + set_system_intr_gate(VSYSCALL_EMU_VECTOR, &emulate_vsyscall); > + set_bit(VSYSCALL_EMU_VECTOR, used_vectors); That is a generic section of traps.c so it won't build (and makes no point) on 32-bit. Ingo -- 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/