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pc: init pcms->apic_id_limit once and use it throughout pc.c 

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
This commit is contained in:
Igor Mammedov 2016-02-26 14:59:20 +01:00 committed by Michael S. Tsirkin
parent ae29883508
commit ebde2465a9
1 changed files with 19 additions and 26 deletions
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45
hw/i386/pc.c
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@ -699,18 +699,6 @@ static uint32_t x86_cpu_apic_id_from_index(unsigned int cpu_index)
}
}
/* Calculates the limit to CPU APIC ID values
*
* This function returns the limit for the APIC ID value, so that all
* CPU APIC IDs are < pc_apic_id_limit().
*
* This is used for FW_CFG_MAX_CPUS. See comments on bochs_bios_init().
*/
static unsigned int pc_apic_id_limit(unsigned int max_cpus)
{
return x86_cpu_apic_id_from_index(max_cpus - 1) + 1;
}
static void pc_build_smbios(FWCfgState *fw_cfg)
{
uint8_t *smbios_tables, *smbios_anchor;
@ -748,12 +736,11 @@ static void pc_build_smbios(FWCfgState *fw_cfg)
}
}
static FWCfgState *bochs_bios_init(AddressSpace *as)
static FWCfgState *bochs_bios_init(AddressSpace *as, PCMachineState *pcms)
{
FWCfgState *fw_cfg;
uint64_t *numa_fw_cfg;
int i, j;
unsigned int apic_id_limit = pc_apic_id_limit(max_cpus);
fw_cfg = fw_cfg_init_io_dma(FW_CFG_IO_BASE, FW_CFG_IO_BASE + 4, as);
@ -771,7 +758,7 @@ static FWCfgState *bochs_bios_init(AddressSpace *as)
* [1] The only kind of "CPU identifier" used between SeaBIOS and QEMU is
* the APIC ID, not the "CPU index"
*/
fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)apic_id_limit);
fw_cfg_add_i16(fw_cfg, FW_CFG_MAX_CPUS, (uint16_t)pcms->apic_id_limit);
fw_cfg_add_i64(fw_cfg, FW_CFG_RAM_SIZE, (uint64_t)ram_size);
fw_cfg_add_bytes(fw_cfg, FW_CFG_ACPI_TABLES,
acpi_tables, acpi_tables_len);
@ -789,11 +776,11 @@ static FWCfgState *bochs_bios_init(AddressSpace *as)
* of nodes, one word for each VCPU->node and one word for each node to
* hold the amount of memory.
*/
numa_fw_cfg = g_new0(uint64_t, 1 + apic_id_limit + nb_numa_nodes);
numa_fw_cfg = g_new0(uint64_t, 1 + pcms->apic_id_limit + nb_numa_nodes);
numa_fw_cfg[0] = cpu_to_le64(nb_numa_nodes);
for (i = 0; i < max_cpus; i++) {
unsigned int apic_id = x86_cpu_apic_id_from_index(i);
assert(apic_id < apic_id_limit);
assert(apic_id < pcms->apic_id_limit);
for (j = 0; j < nb_numa_nodes; j++) {
if (test_bit(i, numa_info[j].node_cpu)) {
numa_fw_cfg[apic_id + 1] = cpu_to_le64(j);
@ -802,10 +789,11 @@ static FWCfgState *bochs_bios_init(AddressSpace *as)
}
}
for (i = 0; i < nb_numa_nodes; i++) {
numa_fw_cfg[apic_id_limit + 1 + i] = cpu_to_le64(numa_info[i].node_mem);
numa_fw_cfg[pcms->apic_id_limit + 1 + i] =
cpu_to_le64(numa_info[i].node_mem);
}
fw_cfg_add_bytes(fw_cfg, FW_CFG_NUMA, numa_fw_cfg,
(1 + apic_id_limit + nb_numa_nodes) *
(1 + pcms->apic_id_limit + nb_numa_nodes) *
sizeof(*numa_fw_cfg));
return fw_cfg;
@ -1119,7 +1107,6 @@ void pc_cpus_init(PCMachineState *pcms)
int i;
X86CPU *cpu = NULL;
MachineState *machine = MACHINE(pcms);
unsigned long apic_id_limit;
/* init CPUs */
if (machine->cpu_model == NULL) {
@ -1130,10 +1117,17 @@ void pc_cpus_init(PCMachineState *pcms)
#endif
}
apic_id_limit = pc_apic_id_limit(max_cpus);
if (apic_id_limit > ACPI_CPU_HOTPLUG_ID_LIMIT) {
error_report("max_cpus is too large. APIC ID of last CPU is %lu",
apic_id_limit - 1);
/* Calculates the limit to CPU APIC ID values
*
* Limit for the APIC ID value, so that all
* CPU APIC IDs are < pcms->apic_id_limit.
*
* This is used for FW_CFG_MAX_CPUS. See comments on bochs_bios_init().
*/
pcms->apic_id_limit = x86_cpu_apic_id_from_index(max_cpus - 1) + 1;
if (pcms->apic_id_limit > ACPI_CPU_HOTPLUG_ID_LIMIT) {
error_report("max_cpus is too large. APIC ID of last CPU is %u",
pcms->apic_id_limit - 1);
exit(1);
}
@ -1186,7 +1180,6 @@ void pc_guest_info_init(PCMachineState *pcms)
{
int i, j;
pcms->apic_id_limit = pc_apic_id_limit(max_cpus);
pcms->apic_xrupt_override = kvm_allows_irq0_override();
pcms->numa_nodes = nb_numa_nodes;
pcms->node_mem = g_malloc0(pcms->numa_nodes *
@ -1371,7 +1364,7 @@ void pc_memory_init(PCMachineState *pcms,
option_rom_mr,
1);
fw_cfg = bochs_bios_init(&address_space_memory);
fw_cfg = bochs_bios_init(&address_space_memory, pcms);
rom_set_fw(fw_cfg);