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 8CC76EB64DD for ; Wed, 9 Aug 2023 03:44:31 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qTa6o-0003Ap-2g; Tue, 08 Aug 2023 23:43:42 -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 1qTa6l-00039B-Uy for qemu-devel@nongnu.org; Tue, 08 Aug 2023 23:43:39 -0400 Received: from mail-pl1-x636.google.com ([2607:f8b0:4864:20::636]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qTa6k-0001Ar-5V for qemu-devel@nongnu.org; Tue, 08 Aug 2023 23:43:39 -0400 Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-1bbbbb77b38so40184565ad.3 for ; Tue, 08 Aug 2023 20:43:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=daynix-com.20221208.gappssmtp.com; s=20221208; t=1691552616; x=1692157416; h=content-transfer-encoding:in-reply-to:from:content-language :references:to:subject:user-agent:mime-version:date:message-id:from :to:cc:subject:date:message-id:reply-to; bh=SaqBFDbbmz+a8U7Y+FYboQz4LeevhqJPOque12cwnBU=; b=17tFK4pLB7tyJe8P5+lRymPmEviiK0bcKiAVWXZSFPB5HESNNFfz0OSc1QXM+rno2A eUWgR+0tIFASM3jcSlQ/NsqEn3jp4e94hPWtcgN06VJ08YEVq7Iv4Nz3/8YSP+Nf3ipI kU+6+aYKLyVafzsF8VxWv9SPRoGN1u6CcOWUB1DvEF7rTM2lQrezPF1JnMVbMWiozRLI Ibg/5FTB8PwgyoS5YEnuAcV3a0wLsFvt9lfcsHoPq7hFzXQVWWnwvHAGmzaZQdYai71r FuoGCBWJ7nfz6+xl74b6p1322jR+AkyBsWE0tizk8mteSQJnLgLTRWMDponRNumLnHvT vmeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691552616; x=1692157416; h=content-transfer-encoding:in-reply-to:from:content-language :references:to:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=SaqBFDbbmz+a8U7Y+FYboQz4LeevhqJPOque12cwnBU=; b=SxyFZ2al+Fp/nUpK/NMo6HoK9ZY3QvrrgepgXzGisBwObc7nUimknrhMorMHO4lhhE IPUPaJc7qvgFrg+7oBgE0Jtism9aqx5+Jx2TUfp3iMeG7YmUqp12sxzluTn0MPV24ndc 5OQfPFHu5c3BI2tfcF2mKKWnR1YE6F+qutqa+HUHZBXvqs0Fqh3qzGp6YBhGz9JPcqer NTM4mQ5ADo1n94f7UPqi/nYyMhU9sBiNMAzHxsYDEwiSnGKjbsFOpJg835QNE9fWonTZ 7/7n89kieumlX7hKXqcIBU/+/EVAqISr2Z6zm+IfL4YyAfDQb/0gNJZRyBw/8OFW+tTw aNaQ== X-Gm-Message-State: AOJu0YwKb0DJ/PpfsJfOM+01bKavSIaEi36okLk67xGcsMacCnVRKtgZ gebIkamZic1NFkioorK7WJL8Kg== X-Google-Smtp-Source: AGHT+IFuEZT5dS5r0Tcr6CMXQ3f0wHVIH94H9/r9sjVmV/BGfqHSlWRDvxLh7gHlVIAkoZ0YM6TwrQ== X-Received: by 2002:a17:902:e5d1:b0:1b8:8b72:fa28 with SMTP id u17-20020a170902e5d100b001b88b72fa28mr1781642plf.58.1691552616459; Tue, 08 Aug 2023 20:43:36 -0700 (PDT) Received: from ?IPV6:2400:4050:a840:1e00:78d2:b862:10a7:d486? ([2400:4050:a840:1e00:78d2:b862:10a7:d486]) by smtp.gmail.com with ESMTPSA id m1-20020a170902d18100b001b9d7c8f44dsm9892530plb.182.2023.08.08.20.43.35 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 08 Aug 2023 20:43:36 -0700 (PDT) Message-ID: Date: Wed, 9 Aug 2023 12:43:34 +0900 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] qemu/osdep: Remove fallback for MAP_FIXED_NOREPLACE To: Richard Henderson , qemu-devel@nongnu.org References: <20230808164418.69989-1-richard.henderson@linaro.org> Content-Language: en-US From: Akihiko Odaki In-Reply-To: <20230808164418.69989-1-richard.henderson@linaro.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: none client-ip=2607:f8b0:4864:20::636; envelope-from=akihiko.odaki@daynix.com; helo=mail-pl1-x636.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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 2023/08/09 1:44, Richard Henderson wrote: > In order for our emulation of MAP_FIXED_NOREPLACE to succeed within > linux-user target_mmap, we require a non-zero value. This does not > require host kernel support, merely the bit being defined. > > MAP_FIXED_NOREPLACE was added with glibc 2.28. From repology.org: > > Fedora 36: 2.35 > CentOS 8 (RHEL-8): 2.28 > Debian 11: 2.31 > OpenSUSE Leap 15.4: 2.31 > Ubuntu LTS 20.04: 2.31 > > Reported-by: Akihiko Odaki > Signed-off-by: Richard Henderson Reviewed-by: Akihiko Odaki