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=-5.1 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A, 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 B407CC07E95 for ; Wed, 7 Jul 2021 20:30:00 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 263BF61CBB for ; Wed, 7 Jul 2021 20:30:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 263BF61CBB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linaro.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:43064 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1m1EBD-0000tM-7n for qemu-devel@archiver.kernel.org; Wed, 07 Jul 2021 16:29:59 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:55804) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1m1EAB-0007op-LS for qemu-devel@nongnu.org; Wed, 07 Jul 2021 16:28:55 -0400 Received: from mail-pg1-x533.google.com ([2607:f8b0:4864:20::533]:46611) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1m1EAA-000742-5g for qemu-devel@nongnu.org; Wed, 07 Jul 2021 16:28:55 -0400 Received: by mail-pg1-x533.google.com with SMTP id w15so3504048pgk.13 for ; Wed, 07 Jul 2021 13:28:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=subject:from:to:cc:references:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=5LYkdijv+QyxkM60YJWJmSHgjCbIiP0NJGovely9ldE=; b=RL39mimK1b8RR1GskKhyF0KjHk12m24NUN8G6a5nPwcBe+KpA8Wjpzw/N0cNFcO3AJ gf7drz4NFGpALfrz4c2BvJNkXOkvzEWufhX1bPa30bBXRjxTdQ95PV9XHOOH1JLAmO/+ qeYOEHCWKyqOJhqZqiyuEC20jvWLmSFavD7+kAIQ6WAgZi7n1PZCprOwkLkddw0S2X+B j6wuQHhUrW2KHAqmqQ03h/+yr3NNeg2ESmmAqeIDDTvAROKKt759RAvpphwrCXw+dm1E dLrRwf1sQIxbJoBQkz6cBV2EH98S9OBKVgPuRPPoC7O4gbY87cwBLX1T/gjANifZmyho eBpA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:from:to:cc:references:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=5LYkdijv+QyxkM60YJWJmSHgjCbIiP0NJGovely9ldE=; b=gvu8NKedhBpVQdWvPdVl1mLTprASzFl8OzYpCSlcCBy8QEFIufecIh1iOjsNVkHUqA 5O/zxoh7K+WBnlzmfC6ATgSk0iVU58p3Iz5hkPtOCwK7rDyHMT/vKE4u4vbUab2TqNkl L/+ygHBqsuQMXCQOB5A9DgNvk6gigfcYQ5UEwtsBtV8rvuasGCsBMVXolgELiilc2WNC VDavD876qd4Cq+G3Xl8LPUq9XYBTEotFlMlK094qGMJsKtKXtvwdm7hJpgQxMeWgbgnl 3Co+TCo1DmS4AIjms1EqN0C4GfujiGu9WL3NdOQO+dsWrgne8WlbWzXYejtevSOfPjiH iMCw== X-Gm-Message-State: AOAM530ozf6cklE0T36AEpqOBCOT0H7PPzYN3Ju81rqw5ZGBwyxg01oK x0eOHDrnpRMJW46dSqb4HjovuA== X-Google-Smtp-Source: ABdhPJztjkPJi//Yz2PmevvAAJdtOmiKbA/mWgX7ViKmJYhb/UpmepvWk8o5JYqPYU0u/6rllvS4dw== X-Received: by 2002:a65:57cc:: with SMTP id q12mr2358244pgr.417.1625689731976; Wed, 07 Jul 2021 13:28:51 -0700 (PDT) Received: from [192.168.1.11] ([71.212.149.176]) by smtp.gmail.com with ESMTPSA id w194sm60143pfc.126.2021.07.07.13.28.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 07 Jul 2021 13:28:51 -0700 (PDT) Subject: Re: [PATCH v2 22/36] linux-user/i386: Add vdso and use it for sigreturn From: Richard Henderson To: qemu-devel@nongnu.org References: <20210706234932.356913-1-richard.henderson@linaro.org> <20210706234932.356913-23-richard.henderson@linaro.org> Message-ID: <10667812-6041-c3ca-59bc-7752fa6ce3b7@linaro.org> Date: Wed, 7 Jul 2021 13:28:50 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210706234932.356913-23-richard.henderson@linaro.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::533; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x533.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alex.bennee@linaro.org, laurent@vivier.eu Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 7/6/21 4:49 PM, Richard Henderson wrote: > + .cfi_startproc > +__vdso_clock_gettime: > + mov $__NR_clock_gettime, %eax > + int $0x80 > + ret Bah. Have to load the parameters from the stack for these functions. Not sure why this doesn't fail on ubuntu host, but it does on fedora. r~