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i386/pc: pass pci_hole64_size to pc_memory_init() 

Use the pre-initialized pci-host qdev and fetch the
pci-hole64-size into pc_memory_init() newly added argument.
Use PCI_HOST_PROP_PCI_HOLE64_SIZE pci-host property for
fetching pci-hole64-size.

This is in preparation to determine that host-phys-bits are
enough and for pci-hole64-size to be considered to relocate
ram-above-4g to be at 1T (on AMD platforms).

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20220719170014.27028-4-joao.m.martins@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Joao Martins 2022-07-19 18:00:06 +01:00 committed by Michael S. Tsirkin
parent 4876778749
commit c48eb7a4e8
4 changed files with 19 additions and 4 deletions
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3
hw/i386/pc.c
View File

@ -817,7 +817,8 @@ void xen_load_linux(PCMachineState *pcms)
void pc_memory_init(PCMachineState *pcms,
MemoryRegion *system_memory,
MemoryRegion *rom_memory,
MemoryRegion **ram_memory)
MemoryRegion **ram_memory,
uint64_t pci_hole64_size)
{
int linux_boot, i;
MemoryRegion *option_rom_mr;

7
hw/i386/pc_piix.c
View File

@ -91,6 +91,7 @@ static void pc_init1(MachineState *machine,
MemoryRegion *pci_memory;
MemoryRegion *rom_memory;
ram_addr_t lowmem;
uint64_t hole64_size;
DeviceState *i440fx_host;
/*
@ -166,10 +167,14 @@ static void pc_init1(MachineState *machine,
memory_region_init(pci_memory, NULL, "pci", UINT64_MAX);
rom_memory = pci_memory;
i440fx_host = qdev_new(host_type);
hole64_size = object_property_get_uint(OBJECT(i440fx_host),
PCI_HOST_PROP_PCI_HOLE64_SIZE,
&error_abort);
} else {
pci_memory = NULL;
rom_memory = system_memory;
i440fx_host = NULL;
hole64_size = 0;
}
pc_guest_info_init(pcms);
@ -186,7 +191,7 @@ static void pc_init1(MachineState *machine,
/* allocate ram and load rom/bios */
if (!xen_enabled()) {
pc_memory_init(pcms, system_memory,
rom_memory, &ram_memory);
rom_memory, &ram_memory, hole64_size);
} else {
pc_system_flash_cleanup_unused(pcms);
if (machine->kernel_filename != NULL) {

10
hw/i386/pc_q35.c
View File

@ -138,6 +138,7 @@ static void pc_q35_init(MachineState *machine)
MachineClass *mc = MACHINE_GET_CLASS(machine);
bool acpi_pcihp;
bool keep_pci_slot_hpc;
uint64_t pci_hole64_size = 0;
/* Check whether RAM fits below 4G (leaving 1/2 GByte for IO memory
* and 256 Mbytes for PCI Express Enhanced Configuration Access Mapping
@ -206,8 +207,15 @@ static void pc_q35_init(MachineState *machine)
/* create pci host bus */
q35_host = Q35_HOST_DEVICE(qdev_new(TYPE_Q35_HOST_DEVICE));
if (pcmc->pci_enabled) {
pci_hole64_size = object_property_get_uint(OBJECT(q35_host),
PCI_HOST_PROP_PCI_HOLE64_SIZE,
&error_abort);
}
/* allocate ram and load rom/bios */
pc_memory_init(pcms, get_system_memory(), rom_memory, &ram_memory);
pc_memory_init(pcms, get_system_memory(), rom_memory, &ram_memory,
pci_hole64_size);
object_property_add_child(qdev_get_machine(), "q35", OBJECT(q35_host));
object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_RAM_MEM,

3
include/hw/i386/pc.h
View File

@ -162,7 +162,8 @@ void xen_load_linux(PCMachineState *pcms);
void pc_memory_init(PCMachineState *pcms,
MemoryRegion *system_memory,
MemoryRegion *rom_memory,
MemoryRegion **ram_memory);
MemoryRegion **ram_memory,
uint64_t pci_hole64_size);
uint64_t pc_pci_hole64_start(void);
DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus *pci_bus);
void pc_basic_device_init(struct PCMachineState *pcms,