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[173.197.98.125]) by smtp.gmail.com with ESMTPSA id d5-20020a170902b70500b001d6f29c12f7sm464418pls.135.2024.02.14.22.21.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 14 Feb 2024 22:21:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1707978062; x=1708582862; 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=n/bmjjPgt+4cAZDZblP4w6A7Xhw+0ftgWcgfLTUC2AM=; b=iAVlYPA3IK6ae7rQCI5dUhoCxdHv87BIiZR6rzuLU0BCkBApD2gktnpMnHlyol+P3U C9tMWKRcpHto4GSN81BqvnMPjrEAwHU5lxMYP8ulg+w33Hy+Fe394w49BWsUPzrs2eP/ Picgqp6If7zZ3yUqMDgYKySdb5mt+oFk9ngduUf/fAEn3acHudRx9RLjTDTlopoTySxW ApdibbJHEtLzUTTTIoFN5bH4Crgt45+qyGk24TvdVRmk/Xypp3yN1ycTSa7L+9hi4jVP 4TmZG6MyztUD3vAzcoBDbXeoo7qWZDV0HjQjKVyKk9i+WYC7WnEWA90knuIGt7AXxGte r/XA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1707978062; x=1708582862; 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=n/bmjjPgt+4cAZDZblP4w6A7Xhw+0ftgWcgfLTUC2AM=; b=w7VeyvVbyGcbd9RNk88qTTPzRHu2sXTG4PeO0GiS//v9OL02mG5V4XNwXT7p9Ykata x2fqR/JNluKcot89bEOSfMQYhoY/yviDdJogedCNFINoIFAtvUz/6+fyYce4Czpg9CtP APxoKjT6LYCdvOPTiAeJ08EHB8Rsb5ROL1m6EHtYOCbDCb5I4OUyMx4L1DQ9lO2xow1B 9GTJRI5xLN+zkAXZ/IFkmfAsgWjiSJiKKpq7G7+ZuNNjrTDjLUtYU4Vaix3rgWA3BMOH cj9YvPJrsbaw1VbB+XMD9YihoGj5VwaxnfJYkVaA7JW2HpTi7Y9uY7zGkDt0zEWWh4Ld pVoA== X-Gm-Message-State: AOJu0YyBPZCoGx61tHmwhtAIeIwY7GyL7/L8ZbLWpY/EKqYWG/ORT9OG /LVQx4ZJx1Q1EzEdMKbQ0VKuizQFsrFWcdAykEXYzM6uizNboI7L5xTfyxsLS97jNmf5JScSXA6 9 X-Google-Smtp-Source: AGHT+IFtt8DndZ0a6o9UnlIWG+rcYFPDVaMRlnbct6yM6wrlh/eav1cW1IdrVFH6ugdaYp27kSmA7Q== X-Received: by 2002:a17:902:b686:b0:1d9:8f6e:86e8 with SMTP id c6-20020a170902b68600b001d98f6e86e8mr729039pls.69.1707978061977; Wed, 14 Feb 2024 22:21:01 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Warner Losh , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , Helge Deller Subject: [PATCH v4 28/36] *-user: Deprecate and disable -p pagesize Date: Wed, 14 Feb 2024 20:20:10 -1000 Message-Id: <20240215062018.795056-29-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-Type: text/plain; charset="utf-8" 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::62d; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x62d.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: 1707978148592100003 This option controls the host page size. From the mis-usage in our own testsuite, this is easily confused with guest page size. The only thing that occurs when changing the host page size is that stuff breaks, because one cannot actually change the host page size. Therefore reject all but the no-op setting as part of the deprecation process. Reviewed-by: Warner Losh Signed-off-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 Acked-by: Helge Deller Message-Id: <20240102015808.132373-27-richard.henderson@linaro.org> --- docs/about/deprecated.rst | 10 ++++++++++ docs/user/main.rst | 3 --- bsd-user/main.c | 10 +++++----- linux-user/main.c | 12 ++++++------ 4 files changed, 21 insertions(+), 14 deletions(-) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 5a2305ccd6..3074303b9c 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -63,6 +63,16 @@ as short-form boolean values, and passed to plugins as `= `arg_name=3Don``. However, short-form booleans are deprecated and full explicit ``arg_name= =3Don`` form is preferred. =20 +User-mode emulator command line arguments +----------------------------------------- + +``-p`` (since 9.0) +'''''''''''''''''' + +The ``-p`` option pretends to control the host page size. However, +it is not possible to change the host page size, and using the +option only causes failures. + QEMU Machine Protocol (QMP) commands ------------------------------------ =20 diff --git a/docs/user/main.rst b/docs/user/main.rst index 7e7ad07409..d5fbb78d3c 100644 --- a/docs/user/main.rst +++ b/docs/user/main.rst @@ -87,9 +87,6 @@ Debug options: Activate logging of the specified items (use '-d help' for a list of log items) =20 -``-p pagesize`` - Act as if the host page size was 'pagesize' bytes - ``-g port`` Wait gdb connection to port =20 diff --git a/bsd-user/main.c b/bsd-user/main.c index e5efb7b845..521b58b880 100644 --- a/bsd-user/main.c +++ b/bsd-user/main.c @@ -364,11 +364,11 @@ int main(int argc, char **argv) } else if (!strcmp(r, "L")) { interp_prefix =3D argv[optind++]; } else if (!strcmp(r, "p")) { - qemu_host_page_size =3D atoi(argv[optind++]); - if (qemu_host_page_size =3D=3D 0 || - (qemu_host_page_size & (qemu_host_page_size - 1)) !=3D 0) { - fprintf(stderr, "page size must be a power of two\n"); - exit(1); + unsigned size, want =3D qemu_real_host_page_size(); + + if (qemu_strtoui(arg, NULL, 10, &size) || size !=3D want) { + warn_report("Deprecated page size option cannot " + "change host page size (%u)", want); } } else if (!strcmp(r, "g")) { gdbstub =3D g_strdup(argv[optind++]); diff --git a/linux-user/main.c b/linux-user/main.c index e540acb84a..bad03f06d3 100644 --- a/linux-user/main.c +++ b/linux-user/main.c @@ -332,11 +332,11 @@ static void handle_arg_ld_prefix(const char *arg) =20 static void handle_arg_pagesize(const char *arg) { - qemu_host_page_size =3D atoi(arg); - if (qemu_host_page_size =3D=3D 0 || - (qemu_host_page_size & (qemu_host_page_size - 1)) !=3D 0) { - fprintf(stderr, "page size must be a power of two\n"); - exit(EXIT_FAILURE); + unsigned size, want =3D qemu_real_host_page_size(); + + if (qemu_strtoui(arg, NULL, 10, &size) || size !=3D want) { + warn_report("Deprecated page size option cannot " + "change host page size (%u)", want); } } =20 @@ -496,7 +496,7 @@ static const struct qemu_argument arg_table[] =3D { {"D", "QEMU_LOG_FILENAME", true, handle_arg_log_filename, "logfile", "write logs to 'logfile' (default stderr)"}, {"p", "QEMU_PAGESIZE", true, handle_arg_pagesize, - "pagesize", "set the host page size to 'pagesize'"}, + "pagesize", "deprecated change to host page size"}, {"one-insn-per-tb", "QEMU_ONE_INSN_PER_TB", false, handle_arg_one_insn_per= _tb, "", "run with one guest instruction per emulated TB"}, --=20 2.34.1