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machine: Add a valid_cpu_types property 

This patch add a MachineClass element that can be set in the machine C
code to specify a list of supported CPU types. If the supported CPU
types are specified the user enter CPU (by -cpu at runtime) is checked
against the supported types and QEMU exits if they aren't supported.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Message-Id: <b8474e9d2e0a219d9bac901342f983b13d009301.1507059418.git.alistair.francis@xilinx.com>
[ehabkost: removed assert(), rewrote comment]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Alistair Francis 2017-10-03 13:05:09 -07:00 committed by Eduardo Habkost
parent 8301ea444a
commit c9cf636d48
2 changed files with 33 additions and 0 deletions
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32
hw/core/machine.c
View File

@ -758,6 +758,38 @@ void machine_run_board_init(MachineState *machine)
if (nb_numa_nodes) {
machine_numa_finish_init(machine);
}
/* If the machine supports the valid_cpu_types check and the user
* specified a CPU with -cpu check here that the user CPU is supported.
*/
if (machine_class->valid_cpu_types && machine->cpu_type) {
ObjectClass *class = object_class_by_name(machine->cpu_type);
int i;
for (i = 0; machine_class->valid_cpu_types[i]; i++) {
if (object_class_dynamic_cast(class,
machine_class->valid_cpu_types[i])) {
/* The user specificed CPU is in the valid field, we are
* good to go.
*/
break;
}
}
if (!machine_class->valid_cpu_types[i]) {
/* The user specified CPU is not valid */
error_report("Invalid CPU type: %s", machine->cpu_type);
error_printf("The valid types are: %s",
machine_class->valid_cpu_types[0]);
for (i = 1; machine_class->valid_cpu_types[i]; i++) {
error_printf(", %s", machine_class->valid_cpu_types[i]);
}
error_printf("\n");
exit(1);
}
}
machine_class->init(machine);
}

1
include/hw/boards.h
View File

@ -191,6 +191,7 @@ struct MachineClass {
bool has_hotpluggable_cpus;
bool ignore_memory_transaction_failures;
int numa_mem_align_shift;
const char **valid_cpu_types;
void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
int nb_nodes, ram_addr_t size);