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b=NB/guY5IGQ7av4QZBjz3UOVyibwWg6gMTl6SgCkRfunCM8YyrqeDprc+2YqtIqtmHD+5/VsvC+KEvDnfZJqkFqoWjl3EKR6nIZ7uUamZCen7SXhlqBqj7kpI9eXmP9yCPqLbkNz9AjFKoQ5bRvfiOQcIP21beXJtws2uoWCRJ72w+vMe8uAoX9pG6Yjxai0c8wI3VwnyUeXx3rDF4T2HfSkZS0ALrgz9Ggb0gT4k5NpwBhf7OJs5o3jpklu/HvhJsX0cLvukyjjxKjs1Ot5jONH/+VM0zsAVJQqwBzOQCrSkBVRdZfT3WOP9tq8ITtda+l7VExwXCLgHHas4fQo9nw== From: Mark Cave-Ayland To: imammedo@redhat.com, philmd@linaro.org, berrange@redhat.com, jdenemar@redhat.com, pbonzini@redhat.com, richard.henderson@linaro.org, eduardo@habkost.net, mst@redhat.com, marcel.apfelbaum@gmail.com, qemu-devel@nongnu.org Subject: [PATCH] hw/i386/isapc.c: remove support for -cpu host and -cpu max Date: Wed, 24 Sep 2025 13:46:30 +0100 Message-ID: <20250924124653.1395094-1-mark.caveayland@nutanix.com> X-Mailer: git-send-email 2.43.0 Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: AM0PR04CA0041.eurprd04.prod.outlook.com (2603:10a6:208:1::18) To PH0PR02MB7159.namprd02.prod.outlook.com (2603:10b6:510:16::8) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PH0PR02MB7159:EE_|BL3PR02MB8003:EE_ X-MS-Office365-Filtering-Correlation-Id: 21de688d-9730-4369-ee6c-08ddfb68723b x-proofpoint-crosstenant: true X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=148.163.155.12; envelope-from=mark.caveayland@nutanix.com; helo=mx0b-002c1b01.pphosted.com X-Spam_score_int: -31 X-Spam_score: -3.2 X-Spam_bar: --- X-Spam_report: (-3.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.444, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @nutanix.com) X-ZM-MESSAGEID: 1758718088969116600 Content-Type: text/plain; charset="utf-8" Following recent discussions on the mailing list, it has been decided that instead of mapping -cpu host and -cpu max to a suitable 32-bit x86 CPU, it is preferable to disallow them and use the existing valid_cpu_types validation logic so that an error is returned to the user instead. Signed-off-by: Mark Cave-Ayland --- hw/i386/isapc.c | 27 --------------------------- 1 file changed, 27 deletions(-) diff --git a/hw/i386/isapc.c b/hw/i386/isapc.c index 44f4a44672..6c35a397df 100644 --- a/hw/i386/isapc.c +++ b/hw/i386/isapc.c @@ -41,31 +41,6 @@ static void pc_init_isa(MachineState *machine) DriveInfo *hd[MAX_IDE_BUS * MAX_IDE_DEVS]; int i; =20 - /* - * There is a small chance that someone unintentionally passes "-cpu m= ax" - * for the isapc machine, which will provide a much more modern 32-bit - * CPU than would be expected for an ISA-era PC. If the "max" cpu type= has - * been specified, choose the "best" 32-bit cpu possible which we cons= ider - * be the pentium3 (deliberately choosing an Intel CPU given that the - * default 486 CPU for the isapc machine is also an Intel CPU). - */ - if (!strcmp(machine->cpu_type, X86_CPU_TYPE_NAME("max"))) { - machine->cpu_type =3D X86_CPU_TYPE_NAME("pentium3"); - warn_report("-cpu max is invalid for isapc machine, using pentium3= "); - } - - /* - * Similarly if someone unintentionally passes "-cpu host" for the isa= pc - * machine then display a warning and also switch to the "best" 32-bit - * cpu possible which we consider to be the pentium3. This is because = any - * host CPU will already be modern than this, but it also ensures any - * newer CPU flags/features are filtered out for older guests. - */ - if (!strcmp(machine->cpu_type, X86_CPU_TYPE_NAME("host"))) { - machine->cpu_type =3D X86_CPU_TYPE_NAME("pentium3"); - warn_report("-cpu host is invalid for isapc machine, using pentium= 3"); - } - if (machine->ram_size > 3.5 * GiB) { error_report("Too much memory for this machine: %" PRId64 " MiB, " "maximum 3584 MiB", machine->ram_size / MiB); @@ -162,8 +137,6 @@ static void isapc_machine_options(MachineClass *m) X86_CPU_TYPE_NAME("pentium2"), X86_CPU_TYPE_NAME("pentium3"), X86_CPU_TYPE_NAME("qemu32"), - X86_CPU_TYPE_NAME("max"), - X86_CPU_TYPE_NAME("host"), NULL }; PCMachineClass *pcmc =3D PC_MACHINE_CLASS(m); --=20 2.43.0