Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752182AbaFOUxl (ORCPT ); Sun, 15 Jun 2014 16:53:41 -0400 Received: from mail-vc0-f180.google.com ([209.85.220.180]:40017 "EHLO mail-vc0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751176AbaFOUxi (ORCPT ); Sun, 15 Jun 2014 16:53:38 -0400 MIME-Version: 1.0 In-Reply-To: <8607961d-b42a-4dba-a736-d3a8586ee42d@email.android.com> References: <21405.44257.742122.786960@gargle.gargle.HOWL> <20140615143500.GP179@brightrain.aerifal.cx> <539DD26B.3060709@zytor.com> <539DDE9C.3010903@zytor.com> <4ab91a07-c46c-485b-895d-b074d36624d6@email.android.com> <90c597c5-f77d-491e-b0b8-dde2027155b5@email.android.com> <9a4fb9c9-4b1c-4593-a99e-a2ef2325d55d@email.android.com> <8607961d-b42a-4dba-a736-d3a8586ee42d@email.android.com> From: Andy Lutomirski Date: Sun, 15 Jun 2014 13:53:17 -0700 Message-ID: Subject: Re: [RFC 0/2] __vdso_findsym To: "H. Peter Anvin" Cc: Ian Lance Taylor , Andi Kleen , Rich Felker , Mikael Pettersson , Russ Cox , Linux API , "linux-kernel@vger.kernel.org" , X86 ML Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Jun 15, 2014 at 12:56 PM, H. Peter Anvin wrote: > You can link against vdso.so if you want to; the kernel build provides an option to install that image. Doesn't mean that any particular libc uses it. I'd be rather surprised if anyone does this, given the generally spotty state of vdso.so installation and that there's no such thing as an ELF import library. Also, the vdso's clock_gettime isn't actually compatible with glibc/POSIX -- the return value and errno handling don't match. --Andy -- 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/