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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 6E695C3DA49 for ; Fri, 26 Jul 2024 05:29:53 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sXDVn-0007yw-Vn; Fri, 26 Jul 2024 01:29:04 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sXDVm-0007yO-Cs for qemu-devel@nongnu.org; Fri, 26 Jul 2024 01:29:02 -0400 Received: from mail-pl1-x635.google.com ([2607:f8b0:4864:20::635]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sXDVj-0006Ic-PY for qemu-devel@nongnu.org; Fri, 26 Jul 2024 01:29:01 -0400 Received: by mail-pl1-x635.google.com with SMTP id d9443c01a7336-1fd90c2fc68so2501335ad.1 for ; Thu, 25 Jul 2024 22:28:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1721971737; x=1722576537; darn=nongnu.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=j/4LJTiFl0k7aGXpmE0CbIHimPEjdPLt9xGncfvw+ww=; b=eSAqBV36GGS8+d00jBjfFu5O8ZvIHjTZt288dgV5zWNMImG8trJZpOd5UsqulJgrBB 0C4axHoZJXUTwheb6ktTCPu8FPnLSwivTcmFIC8m8DeNQ7JsZuQ4f9iBQ9hbJNPdqEiv k9m5oFVSwzvFjt4+B8ueY31gSHapFSsBwWYe1TEFgGCR47QMYUtduWRAvgVAhML+58u8 Lu2A4rbtPpU8P4m6AxVb/qWwTuA6qJk+EGewKErHt00m/i6biUxU7dZaPPSrix8164KO wb4eSCNag0Sc6oVR0lP493FD0K2ysrk3058r988OIKa203Fvvu0IIAg/Ei3uaV4iKzeC /3EQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1721971737; x=1722576537; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=j/4LJTiFl0k7aGXpmE0CbIHimPEjdPLt9xGncfvw+ww=; b=Nuxru+xLyZwdawTDb5aFliXuWHzh9/Z91/+7/yPYxV6nOyo2eANySLIIE0eoJqRhjs WGghX153z/6LOxfJ9eqOdJOi5+UiFZ93z7SZBhST3o9BliFr4bB+aGGOaeT/oAtSNrmC 5Y3At7YevEGxa2eL21AvOUjuPZH1gETqKeq0ycLdR3llD4Gp28E/CcRe/kH4UFb64nSa Ysz34SpmTRcBXEwa6Y0EwiH0vQBPK042f7dmgUMa1+1JMr2Z58j6OqABmtsHFiX6TjNY px57NEsYaQ6Vxzx4QCxti/NAjcnQLN+5zt8z/+9bAuiiEN4q1NscFt7K9UxfjP57FaxO wIbA== X-Forwarded-Encrypted: i=1; AJvYcCVmT2GfjyC9nfGulS0f6DUgnYiChnq891z9Q/7LIU68mT35bYgys/ivMJr6fOXLiI37znGaM7YlohpWqaBOEU65lLdptyU= X-Gm-Message-State: AOJu0Yx+Sj0c6ryradlzJKBPynyVqr2m+r0Hev7bQakJy28KMjQIzCrH LqbSr+XJk1rdg9MjlIj3CFvFf7YHd961QVGWsamqOo7CKW/o5TxV5/RvlrfpLkJ8ueb50IndbfW P0O1FUg== X-Google-Smtp-Source: AGHT+IFqo99i0PC23fwh0k0szNo0zsuL0AVPPybZFCfGuDlA4wjQDOvXpnoGZh+y+xdocs+kdaP+sA== X-Received: by 2002:a17:903:1cd:b0:1fd:9a23:90cc with SMTP id d9443c01a7336-1fed389af71mr65111375ad.26.1721971737450; Thu, 25 Jul 2024 22:28:57 -0700 (PDT) Received: from [192.168.1.113] ([203.56.128.103]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-1fed7f71ffbsm23242155ad.231.2024.07.25.22.28.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 25 Jul 2024 22:28:57 -0700 (PDT) Message-ID: Date: Fri, 26 Jul 2024 15:28:51 +1000 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] Let gen-vdso tool to use internal ELF header To: Jim Shu , qemu-devel@nongnu.org Cc: Laurent Vivier References: <20240726043246.10999-1-jim.shu@sifive.com> Content-Language: en-US From: Richard Henderson In-Reply-To: <20240726043246.10999-1-jim.shu@sifive.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2607:f8b0:4864:20::635; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x635.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, 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: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 7/26/24 14:32, Jim Shu wrote: > Let gen-vdso tool to use QEMU's internal ELF header. It could avoid > compatibility issue of glibc version in the environment. QEMU RISC-V > zicfiss/lp extension patchset will add "EM_RISCV" symbol to it. This > symbol is not supported in the legacy glibc. I see EM_RISCV added added (by myself, amusingly, as part of a bulk merge) in 2016, included in glibc 2.24. From repology, vs our oldest supported OS, centos stream 8: 2.28 debian 11: 2.31 fedora 39: 2.37 opensuse leap 15: 2.28 ubuntu 20.04: 2.31 So unless there's some *other* symbol you require, all supported OS will have EM_RISCV. r~