From patchwork Wed Aug 9 17:50:01 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Richard Henderson X-Patchwork-Id: 711934 Delivered-To: patch@linaro.org Received: by 2002:a05:6359:baf:b0:129:c516:61db with SMTP id gf47csp135607rwb; Wed, 9 Aug 2023 10:51:23 -0700 (PDT) X-Google-Smtp-Source: AGHT+IGqZx9h8MDEhslPjLeLwu7Oiv2CV8+g9BHAsredNXpBgvMdpSV1LcmU7/bs+GBPfswi3KRg X-Received: by 2002:a05:622a:34e:b0:403:1c7a:6c70 with SMTP id r14-20020a05622a034e00b004031c7a6c70mr3815qtw.38.1691603483193; Wed, 09 Aug 2023 10:51:23 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1691603483; cv=none; d=google.com; s=arc-20160816; b=wTLGW5Yw1tND9E0ozHtCRmtK1BszdwKU4IlUhCBTypQf9Hl6vo5S57br/7psGmUxEz wbHah/fVmoSsSSTR28RjjP/pFlSmhkVqS29NRv47PvxRF74Y4d4Jy2bqI/wotAKtD1NG qhx+tcniQzUiDEwO34uOPfFJZCjFQLVP7sbJr+2Lhis8YGcev0RcNVVvqJpgF0IEAx/6 5ZFWYzt9m/oY8ncmed/uR00Lzg73Qe6uHAceVpin+0aYJupxgR66IHLDkPQWquDQftDm TKwuzSrnG13av5TkBBbRJZ77rl1V0ipBPR8Caf/t37RseZsBz5CmaGbLye+mgCgyNscG Tuhw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:list-subscribe:list-help:list-post:list-archive :list-unsubscribe:list-id:precedence:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from:dkim-signature; bh=jv2rFQy8ox3PX4o5HcVDJ943M2bxOe2uVjR6ZEkXsuQ=; fh=JlK1pa20GwzzNp50CN29wjg9rx9SVZ0Bc99vphlFFiA=; b=KhLf5mDDR2U9qJX8zz/b3TT3TwW/Ih8k6sE0AwngQGgQ53dhcQQe6rZ6ZSa9lU2JEJ j7abXYfRngvxX2au1mONgSU85kIHT3TeD32Xkv/7430m+kI6/THsAdVP7lvcPH7wXIN9 Y3srRoDSHIrKlMx0knkgeV6y9W15tC7X1WHv55JMgFa6yMcgvFreWdTnjHTtBH36O6df a+x9jDwr0I57UtTqr1CrW85QGZRvyZ2FO9z0vJsfm2cQFwdK/uwiTviowCvkRrhK7IvF UV1D5cr8SYgsC2H6ymNlUOtmY9S7DGrEYD1H6LtW8zRO9GxSe2wMJK/bVjF4NPxANf5p LTPw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=OR4mZc1P; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org. [209.51.188.17]) by mx.google.com with ESMTPS id c8-20020a05622a024800b0040f854a0f5esi8152957qtx.646.2023.08.09.10.51.23 for (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Wed, 09 Aug 2023 10:51:23 -0700 (PDT) Received-SPF: pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=OR4mZc1P; spf=pass (google.com: domain of qemu-devel-bounces+patch=linaro.org@nongnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom="qemu-devel-bounces+patch=linaro.org@nongnu.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qTnK4-0000PG-Dl; Wed, 09 Aug 2023 13:50:16 -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 1qTnJz-0000NA-LP for qemu-devel@nongnu.org; Wed, 09 Aug 2023 13:50:11 -0400 Received: from mail-pj1-x102a.google.com ([2607:f8b0:4864:20::102a]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qTnJy-0005eE-0L for qemu-devel@nongnu.org; Wed, 09 Aug 2023 13:50:11 -0400 Received: by mail-pj1-x102a.google.com with SMTP id 98e67ed59e1d1-26834a73b8dso24308a91.2 for ; Wed, 09 Aug 2023 10:50:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1691603408; x=1692208208; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=jv2rFQy8ox3PX4o5HcVDJ943M2bxOe2uVjR6ZEkXsuQ=; b=OR4mZc1Pc0zGjoBELSZoM+eVnA4MttDG+51/ZIgdp4d+nvUAZsbYIKi1ltLPGREefQ MZbI/hC9daAnhSq0UnnPS5oqQTwLyS3lSI6eYJUqTUpI4sWH8OrBUpiq6vDq7r1q3Bx7 KTCw90+1aiy+UsrrxxQJxEM5XJydmS3fPT3CMZ3dmZNjAsvxRqV/WFS5eIZCzZDLK1Q4 e0KChBTRHrHKCjQGYpY/bRVBTJzhJg1V0KcfGEAel2TjMogD0DaVSxhJb2BgCul/l/Tf 5UxOrJtkVyAIF913kDx+nadVcJSATPVcIPU5SWSU60KKq7GfTmCRlPs6P7dWqg8Dj9dq pKsw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691603408; x=1692208208; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=jv2rFQy8ox3PX4o5HcVDJ943M2bxOe2uVjR6ZEkXsuQ=; b=LwIlLb44rv7uH99AssiImt/bfbZwy8oIqTPvpnCkhlZmol9erJTwCL0QoR8cUuhsyE XoPaKvnNfjqq24TrRAuyQafKxHChXk5r0wQO6KyvCxsK+fxi+483epoCvr3kc5tXmpjQ BcOKAq1ZNP1v8TMkB95UoSgu+OV3geNot6tLmXgywB5vUAhEjfP91G60reY7PJP9jpXN az21kxf+aC6Gb/NUEmDKWUCF9uovxwfhGVQ3yJeEeQDm1ROdXFOdD4Werbesxy7IZG5R R5Vs4HRylCwF0ylfjZpOobgU0i6H/2gvy792UJfBGEaAAUJtvE2vNs0r1IcEP38EMkKi lpHg== X-Gm-Message-State: AOJu0YwN3iOlDN6WDFWKziKRRY3DfSZhLE+9cYlEJ1KLq+FJm/A0Coyg pbtRmrpmdK+NcS7SMdfX/tZs2UWZ3NpXam/6/40= X-Received: by 2002:a17:90a:8982:b0:256:8dbd:74fa with SMTP id v2-20020a17090a898200b002568dbd74famr5198pjn.22.1691603408564; Wed, 09 Aug 2023 10:50:08 -0700 (PDT) Received: from stoup.. ([2602:47:d483:7301:6bf0:9674:6ac4:f74c]) by smtp.gmail.com with ESMTPSA id y7-20020a17090a2b4700b0025dc5749b4csm1753710pjc.21.2023.08.09.10.50.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Aug 2023 10:50:08 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Akihiko Odaki , =?utf-8?q?Alex_Benn=C3=A9e?= Subject: [PULL 1/6] qemu/osdep: Remove fallback for MAP_FIXED_NOREPLACE Date: Wed, 9 Aug 2023 10:50:01 -0700 Message-Id: <20230809175006.242479-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230809175006.242479-1-richard.henderson@linaro.org> References: <20230809175006.242479-1-richard.henderson@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::102a; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x102a.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+patch=linaro.org@nongnu.org Sender: qemu-devel-bounces+patch=linaro.org@nongnu.org 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 Reviewed-by: Akihiko Odaki Reviewed-by: Alex Bennée Signed-off-by: Richard Henderson Message-Id: <20230808164418.69989-1-richard.henderson@linaro.org> --- include/qemu/osdep.h | 3 --- 1 file changed, 3 deletions(-) diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h index cc61b00ba9..21ef8f1699 100644 --- a/include/qemu/osdep.h +++ b/include/qemu/osdep.h @@ -289,9 +289,6 @@ void QEMU_ERROR("code path is reachable") #ifndef MAP_ANONYMOUS #define MAP_ANONYMOUS MAP_ANON #endif -#ifndef MAP_FIXED_NOREPLACE -#define MAP_FIXED_NOREPLACE 0 -#endif #ifndef MAP_NORESERVE #define MAP_NORESERVE 0 #endif