* THE SOFTWARE.
*/
-#include <glib.h>
+#include "qemu/osdep.h"
#include "hw/hw.h"
#include "hw/loader.h"
MemoryRegion *ram_memory;
MemoryRegion *pci_memory;
MemoryRegion *rom_memory;
- PcGuestInfo *guest_info;
ram_addr_t lowmem;
- /* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory).
- * If it doesn't, we need to split it in chunks below and above 4G.
- * In any case, try to make sure that guest addresses aligned at
- * 1G boundaries get mapped to host addresses aligned at 1G boundaries.
- * For old machine types, use whatever split we used historically to avoid
- * breaking migration.
- */
- if (machine->ram_size >= 0xe0000000) {
- lowmem = pcmc->gigabyte_align ? 0xc0000000 : 0xe0000000;
- } else {
- lowmem = 0xe0000000;
- }
-
- /* Handle the machine opt max-ram-below-4g. It is basically doing
- * min(qemu limit, user limit).
+ /*
+ * Calculate ram split, for memory below and above 4G. It's a bit
+ * complicated for backward compatibility reasons ...
+ *
+ * - Traditional split is 3.5G (lowmem = 0xe0000000). This is the
+ * default value for max_ram_below_4g now.
+ *
+ * - Then, to gigabyte align the memory, we move the split to 3G
+ * (lowmem = 0xc0000000). But only in case we have to split in
+ * the first place, i.e. ram_size is larger than (traditional)
+ * lowmem. And for new machine types (gigabyte_align = true)
+ * only, for live migration compatibility reasons.
+ *
+ * - Next the max-ram-below-4g option was added, which allowed to
+ * reduce lowmem to a smaller value, to allow a larger PCI I/O
+ * window below 4G. qemu doesn't enforce gigabyte alignment here,
+ * but prints a warning.
+ *
+ * - Finally max-ram-below-4g got updated to also allow raising lowmem,
+ * so legacy non-PAE guests can get as much memory as possible in
+ * the 32bit address space below 4G.
+ *
+ * Examples:
+ * qemu -M pc-1.7 -m 4G (old default) -> 3584M low, 512M high
+ * qemu -M pc -m 4G (new default) -> 3072M low, 1024M high
+ * qemu -M pc,max-ram-below-4g=2G -m 4G -> 2048M low, 2048M high
+ * qemu -M pc,max-ram-below-4g=4G -m 3968M -> 3968M low (=4G-128M)
*/
- if (lowmem > pcms->max_ram_below_4g) {
- lowmem = pcms->max_ram_below_4g;
- if (machine->ram_size - lowmem > lowmem &&
- lowmem & ((1ULL << 30) - 1)) {
- error_report("Warning: Large machine and max_ram_below_4g(%"PRIu64
- ") not a multiple of 1G; possible bad performance.",
- pcms->max_ram_below_4g);
+ lowmem = pcms->max_ram_below_4g;
+ if (machine->ram_size >= pcms->max_ram_below_4g) {
+ if (pcmc->gigabyte_align) {
+ if (lowmem > 0xc0000000) {
+ lowmem = 0xc0000000;
+ }
+ if (lowmem & ((1ULL << 30) - 1)) {
+ error_report("Warning: Large machine and max_ram_below_4g "
+ "(%" PRIu64 ") not a multiple of 1G; "
+ "possible bad performance.",
+ pcms->max_ram_below_4g);
+ }
}
}
pcms->below_4g_mem_size = machine->ram_size;
}
- if (xen_enabled() && xen_hvm_init(pcms, &ram_memory) != 0) {
- fprintf(stderr, "xen hardware virtual machine initialisation failed\n");
- exit(1);
+ if (xen_enabled()) {
+ xen_hvm_init(pcms, &ram_memory);
}
pc_cpus_init(pcms);
rom_memory = system_memory;
}
- guest_info = pc_guest_info_init(pcms);
-
- guest_info->has_acpi_build = pcmc->has_acpi_build;
- guest_info->legacy_acpi_table_size = pcmc->legacy_acpi_table_size;
-
- guest_info->isapc_ram_fw = !pcmc->pci_enabled;
- guest_info->has_reserved_memory = pcmc->has_reserved_memory;
- guest_info->rsdp_in_ram = pcmc->rsdp_in_ram;
+ pc_guest_info_init(pcms);
if (pcmc->smbios_defaults) {
MachineClass *mc = MACHINE_GET_CLASS(machine);
/* allocate ram and load rom/bios */
if (!xen_enabled()) {
pc_memory_init(pcms, system_memory,
- rom_memory, &ram_memory, guest_info);
+ rom_memory, &ram_memory);
} else if (machine->kernel_filename != NULL) {
/* For xen HVM direct kernel boot, load linux here */
- xen_load_linux(pcms, guest_info);
+ xen_load_linux(pcms);
}
gsi_state = g_malloc0(sizeof(*gsi_state));
pcms->below_4g_mem_size,
pcms->above_4g_mem_size,
pci_memory, ram_memory);
+ pcms->bus = pci_bus;
} else {
pci_bus = NULL;
i440fx_state = NULL;
- isa_bus = isa_bus_new(NULL, get_system_memory(), system_io);
+ isa_bus = isa_bus_new(NULL, get_system_memory(), system_io,
+ &error_abort);
no_hpet = 1;
}
isa_bus_irqs(isa_bus, gsi);
if (pcmc->pci_enabled) {
pc_pci_device_init(pci_bus);
}
+
+ if (pcms->acpi_nvdimm_state.is_enabled) {
+ nvdimm_init_acpi_state(&pcms->acpi_nvdimm_state, system_io,
+ pcms->fw_cfg, OBJECT(pcms));
+ }
}
/* Looking for a pc_compat_2_4() function? It doesn't exist.
static void pc_compat_2_1(MachineState *machine)
{
- PCMachineState *pcms = PC_MACHINE(machine);
-
pc_compat_2_2(machine);
x86_cpu_change_kvm_default("svm", NULL);
- pcms->enforce_aligned_dimm = false;
}
static void pc_compat_2_0(MachineState *machine)
static void pc_compat_1_7(MachineState *machine)
{
pc_compat_2_0(machine);
- option_rom_has_mr = true;
x86_cpu_change_kvm_default("x2apic", NULL);
}
static void pc_compat_1_6(MachineState *machine)
{
pc_compat_1_7(machine);
- rom_file_has_mr = false;
}
static void pc_compat_1_5(MachineState *machine)
static void pc_init_isa(MachineState *machine)
{
- option_rom_has_mr = true;
- rom_file_has_mr = false;
if (!machine->cpu_model) {
machine->cpu_model = "486";
}
m->default_display = "std";
}
-static void pc_i440fx_2_5_machine_options(MachineClass *m)
+static void pc_i440fx_2_6_machine_options(MachineClass *m)
{
pc_i440fx_machine_options(m);
m->alias = "pc";
m->is_default = 1;
}
+DEFINE_I440FX_MACHINE(v2_6, "pc-i440fx-2.6", NULL,
+ pc_i440fx_2_6_machine_options);
+
+
+static void pc_i440fx_2_5_machine_options(MachineClass *m)
+{
+ PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
+ pc_i440fx_2_6_machine_options(m);
+ m->alias = NULL;
+ m->is_default = 0;
+ pcmc->save_tsc_khz = false;
+ m->legacy_fw_cfg_order = 1;
+ SET_MACHINE_COMPAT(m, PC_COMPAT_2_5);
+}
+
DEFINE_I440FX_MACHINE(v2_5, "pc-i440fx-2.5", NULL,
pc_i440fx_2_5_machine_options);
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_i440fx_2_5_machine_options(m);
m->hw_version = "2.4.0";
- m->alias = NULL;
- m->is_default = 0;
pcmc->broken_reserved_end = true;
SET_MACHINE_COMPAT(m, PC_COMPAT_2_4);
}
{
pc_i440fx_2_4_machine_options(m);
m->hw_version = "2.3.0";
- m->alias = NULL;
- m->is_default = 0;
SET_MACHINE_COMPAT(m, PC_COMPAT_2_3);
}
m->default_display = NULL;
SET_MACHINE_COMPAT(m, PC_COMPAT_2_1);
pcmc->smbios_uuid_encoded = false;
+ pcmc->enforce_aligned_dimm = false;
}
DEFINE_I440FX_MACHINE(v2_1, "pc-i440fx-2.1", pc_compat_2_1,
pc_i440fx_2_0_machine_options(m);
m->hw_version = "1.7.0";
m->default_machine_opts = NULL;
+ m->option_rom_has_mr = true;
SET_MACHINE_COMPAT(m, PC_COMPAT_1_7);
pcmc->smbios_defaults = false;
pcmc->gigabyte_align = false;
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
pc_i440fx_1_7_machine_options(m);
m->hw_version = "1.6.0";
+ m->rom_file_has_mr = false;
SET_MACHINE_COMPAT(m, PC_COMPAT_1_6);
pcmc->has_acpi_build = false;
}
#define PC_COMPAT_1_3 \
- PC_COMPAT_1_4 \
+ PC_CPU_MODEL_IDS("1.3.0") \
{\
.driver = "usb-tablet",\
.property = "usb_version",\
#define PC_COMPAT_1_2 \
- PC_COMPAT_1_3 \
+ PC_CPU_MODEL_IDS("1.2.0") \
{\
.driver = "nec-usb-xhci",\
.property = "msi",\
#define PC_COMPAT_1_1 \
- PC_COMPAT_1_2 \
+ PC_CPU_MODEL_IDS("1.1.0") \
{\
.driver = "virtio-scsi-pci",\
.property = "hotplug",\
#define PC_COMPAT_1_0 \
- PC_COMPAT_1_1 \
+ PC_CPU_MODEL_IDS("1.0") \
{\
.driver = TYPE_ISA_FDC,\
.property = "check_media_rate",\
#define PC_COMPAT_0_15 \
- PC_COMPAT_1_0
+ PC_CPU_MODEL_IDS("0.15")
static void pc_i440fx_0_15_machine_options(MachineClass *m)
{
#define PC_COMPAT_0_14 \
- PC_COMPAT_0_15 \
+ PC_CPU_MODEL_IDS("0.14") \
{\
.driver = "virtio-blk-pci",\
.property = "event_idx",\
#define PC_COMPAT_0_13 \
- PC_COMPAT_0_14 \
+ PC_CPU_MODEL_IDS("0.13") \
{\
.driver = TYPE_PCI_DEVICE,\
.property = "command_serr_enable",\
#define PC_COMPAT_0_12 \
- PC_COMPAT_0_13 \
+ PC_CPU_MODEL_IDS("0.12") \
{\
.driver = "virtio-serial-pci",\
.property = "max_ports",\
#define PC_COMPAT_0_11 \
- PC_COMPAT_0_12 \
+ PC_CPU_MODEL_IDS("0.11") \
{\
.driver = "virtio-blk-pci",\
.property = "vectors",\
#define PC_COMPAT_0_10 \
- PC_COMPAT_0_11 \
+ PC_CPU_MODEL_IDS("0.10") \
{\
.driver = "virtio-blk-pci",\
.property = "class",\
PCMachineClass *pcmc = PC_MACHINE_CLASS(m);
m->desc = "ISA-only PC";
m->max_cpus = 1;
+ m->option_rom_has_mr = true;
+ m->rom_file_has_mr = false;
pcmc->pci_enabled = false;
pcmc->has_acpi_build = false;
pcmc->smbios_defaults = false;
projects / qemu.git / blobdiff