From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263542AbTEDHWb (ORCPT ); Sun, 4 May 2003 03:22:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263547AbTEDHWb (ORCPT ); Sun, 4 May 2003 03:22:31 -0400 Received: from cpe-24-221-190-179.ca.sprintbbd.net ([24.221.190.179]:6786 "EHLO myware.akkadia.org") by vger.kernel.org with ESMTP id S263542AbTEDHWa (ORCPT ); Sun, 4 May 2003 03:22:30 -0400 Message-ID: <3EB4C28A.8050708@redhat.com> Date: Sun, 04 May 2003 00:34:34 -0700 From: Ulrich Drepper Organization: Red Hat, Inc. User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4b) Gecko/20030501 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Richard Henderson CC: Roland McGrath , Linus Torvalds , linux-kernel@vger.kernel.org Subject: Re: [PATCH] fix vsyscall unwind information References: <200305020033.h420XUi12295@magilla.sf.frob.com> <20030503205159.GA29384@twiddle.net> <20030504062124.GA32457@twiddle.net> In-Reply-To: <20030504062124.GA32457@twiddle.net> X-Enigmail-Version: 0.75.0.0 X-Enigmail-Supports: pgp-inline, pgp-mime Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Richard Henderson wrote: > Also adds unwind info for the sigreturn entry points. Sweet. > This can > be used instead of special-case hacks currently in libgcc and > gdb, and by extension allows the kernel to change these entry > points without breaking userland. Exactly. This means we can get rid of the int $0x80. I.e., move the sigreturn code in the two .S files for sysenter and int80. Reducing the cost of signals is always good. I'm not sure how this use of sigreturn has to look like. Linus, maybe you should do it yourself. - -- - --------------. ,-. 444 Castro Street Ulrich Drepper \ ,-----------------' \ Mountain View, CA 94041 USA Red Hat `--' drepper at redhat.com `--------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQE+tMKL2ijCOnn/RHQRAoDbAJ4nnP3Hcb8xAeqjRHxgq0YZZmcs0wCdE4BE Obuu/wRdq70aooscs1JOhto= =5Sx4 -----END PGP SIGNATURE-----