From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07C91C33CAF for ; Thu, 16 Jan 2020 17:59:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D7F812464B for ; Thu, 16 Jan 2020 17:59:55 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=c-s.fr header.i=@c-s.fr header.b="SD6U3h6U" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394780AbgAPR7y (ORCPT ); Thu, 16 Jan 2020 12:59:54 -0500 Received: from pegase1.c-s.fr ([93.17.236.30]:43863 "EHLO pegase1.c-s.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2394768AbgAPR7v (ORCPT ); Thu, 16 Jan 2020 12:59:51 -0500 Received: from localhost (mailhub1-int [192.168.12.234]) by localhost (Postfix) with ESMTP id 47zBmN5N54z9v4gc; Thu, 16 Jan 2020 18:59:48 +0100 (CET) Authentication-Results: localhost; dkim=pass reason="1024-bit key; insecure key" header.d=c-s.fr header.i=@c-s.fr header.b=SD6U3h6U; dkim-adsp=pass; dkim-atps=neutral X-Virus-Scanned: Debian amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [192.168.12.234]) (amavisd-new, port 10024) with ESMTP id EJWppnBr9WvY; Thu, 16 Jan 2020 18:59:48 +0100 (CET) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 47zBmN44pnz9v4gT; Thu, 16 Jan 2020 18:59:48 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=c-s.fr; s=mail; t=1579197588; bh=IindQu42iENkFluTxFQueQVsDRT1L9tio2zY26H9ooU=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=SD6U3h6UXcUuVSAFLlW6xTpgLah4GnfwkGmyYPfYMJEZ80vWz5QKjLUAJrqbLUTPG FHu5B9HP7RgOIk7EhNh31YeJb4FEx+y8aJnktskyHe7iF3+iFf5JvawY+g5g9uqjxF PgKwNxeR1X6+lUsmGgkzOI/BXQUo3iKSj9by4vDk= Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 43AEF8B82C; Thu, 16 Jan 2020 18:59:50 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id x7-gj-n_L5z9; Thu, 16 Jan 2020 18:59:50 +0100 (CET) Received: from [192.168.4.90] (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id BFD998B82A; Thu, 16 Jan 2020 18:59:49 +0100 (CET) Subject: Re: [PATCH vdsotest] Use vdso wrapper for gettimeofday() To: Nathan Lynch Cc: Thomas Gleixner , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org References: <0eddeeb64c97b8b5ce0abd74e88d2cc0303e49c6.1579090596.git.christophe.leroy@c-s.fr> <871rrzjq5j.fsf@linux.ibm.com> From: Christophe Leroy Message-ID: <01e576b8-fe93-1026-5b39-f878297d6835@c-s.fr> Date: Thu, 16 Jan 2020 18:59:49 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.9.1 MIME-Version: 1.0 In-Reply-To: <871rrzjq5j.fsf@linux.ibm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: fr Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Le 16/01/2020 à 17:56, Nathan Lynch a écrit : > Hi Christophe, > > Christophe Leroy writes: >> To properly handle errors returned by gettimeofday(), the >> DO_VDSO_CALL() macro has to be used, otherwise vdsotest >> misinterpret VDSO function return on error. >> >> This has gone unnoticed until now because the powerpc VDSO >> gettimeofday() always succeed, but while porting powerpc to >> generic C VDSO, the following has been encountered: > > Thanks for this, I'll review it soon. > > Can you point me to patches for the powerpc generic vdso work? > Sure. v3 is at https://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=152867 I added you in v4 destinees. Christophe