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[173.197.98.125]) by smtp.gmail.com with ESMTPSA id d5-20020a170902b70500b001d6f29c12f7sm464418pls.135.2024.02.14.22.20.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Feb 2024 22:20:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1707978028; x=1708582828; 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=emMi1h1Qw5IeyN9nGFR+tElZTiLuS0cNV7Vg5JxneO0=; b=zJFJ/SjXHE7Sqn4HUoCS/MuJRdx0bQFgr0XiEu6NKwX9V1tOOdkiIxYMukF1MJ3x1T xDl0bbVyhVwiwmeGwePBg8sJSMUodD6prl/HOM8ymn7Dkb/X0qZ3LsbZuTqosbgYsVMQ E4LQTqOtLYYtTBE4g5kE8MYQbDk6o/ieEJP5Eu1M1428qfnLBpam1IqQN2nsUM30ikoO shPccr5YcRFe5wve94Db2OWqNlBfZqCQDSfpsW41Dvvq2QNqEBawqcKxLoXUgReYWrlc Fq1EvqhbdqDbrniThsFqi0IRp4R5UwZhys7sdsHKr8aXoQ1bCJ97LW10EkA2o6elJX3o vTIg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707978028; x=1708582828; 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=emMi1h1Qw5IeyN9nGFR+tElZTiLuS0cNV7Vg5JxneO0=; b=Vdf80zVwVCgJ9qclKmSSQkKtGyU6nj/m0n0HEV3aKBEiW7Xhs2Rn9TKcotbkBzP1TF vR3WMVX/X1f9o4y2P2BT2GVfaEIo3aw+r2YErluJ5vF/EmpDg4mtxIYsx3qxT02dJYzK Q5negPj3Z4wotkQTuGQQXNGM4gluOgv6hdiw5IPwU5dDDCbUc1VZlaTNCxEySj6s0PwB SSUKLhINAQP1jdcItlbnfwr0PzaCq92UtVbMYlqxT7iNsBYwUMhMBppF47pEasEUSOK5 eE9uV4jUGf129i5vZzn7QeKCHrXwsj6AODfu2YutIrkCQHfccN9aayvj1tWd8NHbyjGa rwnQ== X-Gm-Message-State: AOJu0YwfkccT+6yl2kf6R6SS2U4GGIlkOuW2vmpVPZoQlpN6ScMdkYgk TcEuYh8/i7aEjm2za2NXSCth+nvh8goCQ5S6sadMRmf0Hhn0Eu7tis8Mzea8lKM3ipuocFrJ4/D k X-Google-Smtp-Source: AGHT+IHQblyR9F7Qyb08Jc8NnbGd1b8+aT4L1UnTE6GwG6dVNrZ4YVJhGvFSki5qyJSE1WeYcr0HlA== X-Received: by 2002:a17:902:654d:b0:1d9:6dc6:6616 with SMTP id d13-20020a170902654d00b001d96dc66616mr769027pln.68.1707978028155; Wed, 14 Feb 2024 22:20:28 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Pierrick Bouvier , Ilya Leoshkevich , Helge Deller Subject: [PATCH v4 05/36] linux-user/hppa: Simplify init_guest_commpage Date: Wed, 14 Feb 2024 20:19:47 -1000 Message-Id: <20240215062018.795056-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240215062018.795056-1-richard.henderson@linaro.org> References: <20240215062018.795056-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::62c; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62c.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, T_SCC_BODY_TEXT_LINE=-0.01 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+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1707978093682100006 Content-Type: text/plain; charset="utf-8" If reserved_va, then we have already reserved the entire guest virtual address space; no need to remap page. If !reserved_va, then use MAP_FIXED_NOREPLACE. Signed-off-by: Richard Henderson Reviewed-by: Pierrick Bouvier Reviewed-by: Ilya Leoshkevich Acked-by: Helge Deller Message-Id: <20240102015808.132373-6-richard.henderson@linaro.org> --- linux-user/elfload.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/linux-user/elfload.c b/linux-user/elfload.c index dfb152bfcb..1893b3c192 100644 --- a/linux-user/elfload.c +++ b/linux-user/elfload.c @@ -1970,16 +1970,20 @@ static inline void init_thread(struct target_pt_reg= s *regs, =20 static bool init_guest_commpage(void) { - void *want =3D g2h_untagged(LO_COMMPAGE); - void *addr =3D mmap(want, qemu_host_page_size, PROT_NONE, - MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0); + /* If reserved_va, then we have already mapped 0 page on the host. */ + if (!reserved_va) { + void *want, *addr; =20 - if (addr =3D=3D MAP_FAILED) { - perror("Allocating guest commpage"); - exit(EXIT_FAILURE); - } - if (addr !=3D want) { - return false; + want =3D g2h_untagged(LO_COMMPAGE); + addr =3D mmap(want, TARGET_PAGE_SIZE, PROT_NONE, + MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED_NOREPLACE, -1,= 0); + if (addr =3D=3D MAP_FAILED) { + perror("Allocating guest commpage"); + exit(EXIT_FAILURE); + } + if (addr !=3D want) { + return false; + } } =20 /* --=20 2.34.1