From patchwork Thu Jan 23 23:43:56 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= X-Patchwork-Id: 13948738 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 786F7C02182 for ; Thu, 23 Jan 2025 23:45:23 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tb6sD-00069s-CF; Thu, 23 Jan 2025 18:44:33 -0500 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 1tb6sB-00068n-QQ for qemu-devel@nongnu.org; Thu, 23 Jan 2025 18:44:31 -0500 Received: from mail-wr1-x432.google.com ([2a00:1450:4864:20::432]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1tb6s8-0003rn-SZ for qemu-devel@nongnu.org; Thu, 23 Jan 2025 18:44:31 -0500 Received: by mail-wr1-x432.google.com with SMTP id ffacd0b85a97d-385de9f789cso1183219f8f.2 for ; Thu, 23 Jan 2025 15:44:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1737675867; x=1738280667; darn=nongnu.org; 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=4nuXtmGFXC6ord9LKCUcMBdqEKN9u5T/6Xkbf7Pq9+s=; b=aFg1A+iXtHTzplQv2uBeKltCA6R4Lmfe8Eq1rybCKZigLroQLV2B553ijdCSuNhca0 yitDaVxo5c14Z08YbzOzMHKGdanzlK5lAHIwrXRu56zxD+z3NV4Kri4bTiXf7IRe901u ewSh3ODLvS64lVeHaos+QAM2itNnueKwihf/VUbaYhFlz8DUflheKeLMm2CRcBlia0xr iA2SOxjzwU3emP659AOOaAbbTQ+iz7899QXBPoQbCAgJ4ilRv0QzKWazafKCia0ryG7m g1BJkT5HBi1ykw37JKs5+NntdFySavGUcVpLt0csONEukD40eiA+PEx/JUTLQie5aqC2 rQ+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1737675867; x=1738280667; 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=4nuXtmGFXC6ord9LKCUcMBdqEKN9u5T/6Xkbf7Pq9+s=; b=J3HWu6r3Fr2w8A0WR9XgUNGVa8IyPg2qLX0IUmk6FueSq5bmcxdVCIlpuLKd8PiwX6 py2YcWuUEXwuERsBZXG/zVyljMnCzu4G4B20O7CzORDYmUegdVSoXu4INqxFkCfcEEMt BB9q0wws90M8V/57+AE6XkZoVWbrS6u8aKXFdDsbRJsWZ9IQeAb62NrESpBtDqm92Pv9 MkUYbQAKMGDbAvcLPbgd5dNzpm9tv/8T40K43NoWklewWIi79Qi6+PlaVJcxI8272pt1 +d2lslTh2ERHoUcAwGislFuicsHbjVIB05ZI52K+aM7O+4fahUIYDOfyMKkJAVj4aj1g fJdg== X-Gm-Message-State: AOJu0YwnEXj45bKJ2jlJt5boqTbgXE96iS7fwshzNUiyei5ZHbPjCZm8 qkh+n036mrzNdzv27FF1Xps1gaPEMrpwSrWyMyhYuUtBh3R7Xwxli24z6UoabFfx6IgrgYf01C3 0Wr0= X-Gm-Gg: ASbGncvnDRdY3E2i5s1cRh1CtUrVQGr9ZrUgW6t5D7vp2914ON2LJATgV7Ai/SrOIib rEWZUrJl4dMt9j/nfvAG/fNCKAqXBaXxQziFswWUzel6lq1iqVmZjrssh54shnf/sKhP3hPCcnp 1oRVH8YHjONarl+42khHU2p4m0mlEoVuZGHajrbX4v8VObdKvE8ehrwmtyO0DORTGAVHS25lLfM iXjuATjLh//bAJ5/Uk2G9eRn9j2FSd3SC7J1AUU2gTqSmykN8V/9y9FZjTi3UNWTi/O2dlDvEUA rDbSqEr376Jkd0xP2v4dhYqiQnyUbUkj7pCcVsBsKjGVb/gx8hB0DIU= X-Google-Smtp-Source: AGHT+IHv5zns5zWE/8mYKYb9FdwvG4F/GC7lN2DJcXXFDd0WLjCHyuvzadU0RlDxZ5dNLmoZuF9u5A== X-Received: by 2002:a05:6000:1887:b0:38a:87cc:fb42 with SMTP id ffacd0b85a97d-38bf56639d5mr27205303f8f.21.1737675867076; Thu, 23 Jan 2025 15:44:27 -0800 (PST) Received: from localhost.localdomain (88-187-86-199.subs.proxad.net. [88.187.86.199]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38c2a17d6e2sm989811f8f.23.2025.01.23.15.44.25 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Thu, 23 Jan 2025 15:44:26 -0800 (PST) From: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Peter Maydell , Paolo Bonzini , qemu-arm@nongnu.org, Igor Mammedov , =?utf-8?q?Alex_Benn=C3=A9e?= , kvm@vger.kernel.org, qemu-ppc@nongnu.org, qemu-riscv@nongnu.org, David Hildenbrand , qemu-s390x@nongnu.org, xen-devel@lists.xenproject.org, Richard Henderson , =?utf-8?q?Philippe_Mathie?= =?utf-8?q?u-Daud=C3=A9?= Subject: [PATCH 02/20] user: Extract common MMAP API to 'user/mmap.h' Date: Fri, 24 Jan 2025 00:43:56 +0100 Message-ID: <20250123234415.59850-3-philmd@linaro.org> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20250123234415.59850-1-philmd@linaro.org> References: <20250123234415.59850-1-philmd@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::432; envelope-from=philmd@linaro.org; helo=mail-wr1-x432.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=unavailable 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 Keep common MMAP-related declarations in a single place. Note, this disable ThreadSafetyAnalysis on Linux for: - mmap_fork_start() - mmap_fork_end(). Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/qemu.h | 12 +----------- include/user/mmap.h | 32 ++++++++++++++++++++++++++++++++ linux-user/user-mmap.h | 19 ++----------------- 3 files changed, 35 insertions(+), 28 deletions(-) create mode 100644 include/user/mmap.h diff --git a/bsd-user/qemu.h b/bsd-user/qemu.h index 4e97c796318..c1c508281a8 100644 --- a/bsd-user/qemu.h +++ b/bsd-user/qemu.h @@ -32,6 +32,7 @@ extern char **environ; #include "user/thunk.h" +#include "user/mmap.h" #include "target_arch.h" #include "syscall_defs.h" #include "target_syscall.h" @@ -233,19 +234,8 @@ void print_taken_signal(int target_signum, const target_siginfo_t *tinfo); extern int do_strace; /* mmap.c */ -int target_mprotect(abi_ulong start, abi_ulong len, int prot); -abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, - int flags, int fd, off_t offset); -int target_munmap(abi_ulong start, abi_ulong len); -abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, - abi_ulong new_size, unsigned long flags, - abi_ulong new_addr); int target_msync(abi_ulong start, abi_ulong len, int flags); -extern abi_ulong mmap_next_start; -abi_ulong mmap_find_vma(abi_ulong start, abi_ulong size); void mmap_reserve(abi_ulong start, abi_ulong size); -void TSA_NO_TSA mmap_fork_start(void); -void TSA_NO_TSA mmap_fork_end(int child); /* main.c */ extern char qemu_proc_pathname[]; diff --git a/include/user/mmap.h b/include/user/mmap.h new file mode 100644 index 00000000000..4d004e6b822 --- /dev/null +++ b/include/user/mmap.h @@ -0,0 +1,32 @@ +/* + * MMAP declarations for QEMU user emulation + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ +#ifndef USER_MMAP_H +#define USER_MMAP_H + +#include "user/abitypes.h" + +/* + * mmap_next_start: The base address for the next mmap without hint, + * increased after each successful map, starting at task_unmapped_base. + * This is an optimization within QEMU and not part of ADDR_COMPAT_LAYOUT. + */ +extern abi_ulong mmap_next_start; + +int target_mprotect(abi_ulong start, abi_ulong len, int prot); + +abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, + int flags, int fd, off_t offset); +int target_munmap(abi_ulong start, abi_ulong len); +abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, + abi_ulong new_size, unsigned long flags, + abi_ulong new_addr); + +abi_ulong mmap_find_vma(abi_ulong, abi_ulong, abi_ulong); + +void TSA_NO_TSA mmap_fork_start(void); +void TSA_NO_TSA mmap_fork_end(int child); + +#endif diff --git a/linux-user/user-mmap.h b/linux-user/user-mmap.h index b94bcdcf83c..dfc4477a720 100644 --- a/linux-user/user-mmap.h +++ b/linux-user/user-mmap.h @@ -18,6 +18,8 @@ #ifndef LINUX_USER_USER_MMAP_H #define LINUX_USER_USER_MMAP_H +#include "user/mmap.h" + /* * Guest parameters for the ADDR_COMPAT_LAYOUT personality * (at present this is the only layout supported by QEMU). @@ -39,24 +41,7 @@ extern abi_ulong task_unmapped_base; extern abi_ulong elf_et_dyn_base; -/* - * mmap_next_start: The base address for the next mmap without hint, - * increased after each successful map, starting at task_unmapped_base. - * This is an optimization within QEMU and not part of ADDR_COMPAT_LAYOUT. - */ -extern abi_ulong mmap_next_start; - -int target_mprotect(abi_ulong start, abi_ulong len, int prot); -abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, - int flags, int fd, off_t offset); -int target_munmap(abi_ulong start, abi_ulong len); -abi_long target_mremap(abi_ulong old_addr, abi_ulong old_size, - abi_ulong new_size, unsigned long flags, - abi_ulong new_addr); abi_long target_madvise(abi_ulong start, abi_ulong len_in, int advice); -abi_ulong mmap_find_vma(abi_ulong, abi_ulong, abi_ulong); -void mmap_fork_start(void); -void mmap_fork_end(int child); abi_ulong target_shmat(CPUArchState *cpu_env, int shmid, abi_ulong shmaddr, int shmflg);