Use the pre-initialized pci-host qdev and fetch the pci-hole64-size into pc_memory_init() newly added argument. piix needs a bit of care given all the !pci_enabled() and that the pci_hole64_size is private to i440fx.
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.mart...@oracle.com> --- hw/i386/pc.c | 3 ++- hw/i386/pc_piix.c | 5 ++++- hw/i386/pc_q35.c | 8 +++++++- hw/pci-host/i440fx.c | 7 +++++++ include/hw/i386/pc.h | 3 ++- include/hw/pci-host/i440fx.h | 1 + 6 files changed, 23 insertions(+), 4 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 7de0e87f4a3f..360f4e10001b 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -805,7 +805,8 @@ 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; diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 9ff49e672628..5a608e30e28f 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -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_dev; /* @@ -166,10 +167,12 @@ static void pc_init1(MachineState *machine, memory_region_init(pci_memory, NULL, "pci", UINT64_MAX); rom_memory = pci_memory; i440fx_dev = qdev_new(host_type); + hole64_size = i440fx_pci_hole64_size(i440fx_dev); } else { pci_memory = NULL; rom_memory = system_memory; i440fx_dev = NULL; + hole64_size = 0; } pc_guest_info_init(pcms); @@ -186,7 +189,7 @@ 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) { diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index 2881afd75a82..c81d21d1ebb4 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -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 +207,13 @@ 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 = q35_host->mch.pci_hole64_size; + } + /* 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, diff --git a/hw/pci-host/i440fx.c b/hw/pci-host/i440fx.c index 5c1bab5c58ed..c5cc28250d5c 100644 --- a/hw/pci-host/i440fx.c +++ b/hw/pci-host/i440fx.c @@ -237,6 +237,13 @@ static void i440fx_realize(PCIDevice *dev, Error **errp) } } +uint64_t i440fx_pci_hole64_size(DeviceState *i440fx_dev) +{ + I440FXState *i440fx = I440FX_PCI_HOST_BRIDGE(i440fx_dev); + + return i440fx->pci_hole64_size; +} + PCIBus *i440fx_init(const char *host_type, const char *pci_type, DeviceState *dev, PCII440FXState **pi440fx_state, diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 9c9f4ac74810..d8b9c4ebd748 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -158,7 +158,8 @@ 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, diff --git a/include/hw/pci-host/i440fx.h b/include/hw/pci-host/i440fx.h index c4710445e30a..1299d6a2b0e4 100644 --- a/include/hw/pci-host/i440fx.h +++ b/include/hw/pci-host/i440fx.h @@ -45,5 +45,6 @@ PCIBus *i440fx_init(const char *host_type, const char *pci_type, MemoryRegion *pci_memory, MemoryRegion *ram_memory); +uint64_t i440fx_pci_hole64_size(DeviceState *i440fx_dev); #endif -- 2.17.2