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 <mark.caveayl...@nutanix.com>
---
 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;
 
-    /*
-     * There is a small chance that someone unintentionally passes "-cpu max"
-     * 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 consider
-     * 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 = 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 isapc
-     * 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 = X86_CPU_TYPE_NAME("pentium3");
-        warn_report("-cpu host is invalid for isapc machine, using pentium3");
-    }
-
     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 = PC_MACHINE_CLASS(m);
-- 
2.43.0


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