From 4876778749021a59a03dd3da3518dc861bc95ff8 Mon Sep 17 00:00:00 2001 From: Joao Martins Date: Tue, 19 Jul 2022 18:00:05 +0100 Subject: [PATCH] i386/pc: create pci-host qdev prior to pc_memory_init() At the start of pc_memory_init() we usually pass a range of 0..UINT64_MAX as pci_memory, when really its 2G (i440fx) or 32G (q35). To get the real user value, we need to get pci-host passed property for default pci_hole64_size. Thus to get that, create the qdev prior to memory init to better make estimations on max used/phys addr. This is in preparation to determine that host-phys-bits are enough and also for pci-hole64-size to be considered to relocate ram-above-4g to be at 1T (on AMD platforms). Signed-off-by: Joao Martins Reviewed-by: Igor Mammedov Message-Id: <20220719170014.27028-3-joao.m.martins@oracle.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/i386/pc_piix.c | 7 +++++-- hw/i386/pc_q35.c | 6 +++--- hw/pci-host/i440fx.c | 5 ++--- include/hw/pci-host/i440fx.h | 3 ++- 4 files changed, 12 insertions(+), 9 deletions(-) diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index fbf9465318..b8b3ce3408 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; + DeviceState *i440fx_host; /* * Calculate ram split, for memory below and above 4G. It's a bit @@ -164,9 +165,11 @@ static void pc_init1(MachineState *machine, pci_memory = g_new(MemoryRegion, 1); memory_region_init(pci_memory, NULL, "pci", UINT64_MAX); rom_memory = pci_memory; + i440fx_host = qdev_new(host_type); } else { pci_memory = NULL; rom_memory = system_memory; + i440fx_host = NULL; } pc_guest_info_init(pcms); @@ -200,8 +203,8 @@ static void pc_init1(MachineState *machine, const char *type = xen_enabled() ? TYPE_PIIX3_XEN_DEVICE : TYPE_PIIX3_DEVICE; - pci_bus = i440fx_init(host_type, - pci_type, + pci_bus = i440fx_init(pci_type, + i440fx_host, system_memory, system_io, machine->ram_size, x86ms->below_4g_mem_size, x86ms->above_4g_mem_size, diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index 12cc76aaf8..f4d23b1469 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -203,12 +203,12 @@ static void pc_q35_init(MachineState *machine) pcms->smbios_entry_point_type); } - /* allocate ram and load rom/bios */ - pc_memory_init(pcms, get_system_memory(), rom_memory, &ram_memory); - /* create pci host bus */ q35_host = Q35_HOST_DEVICE(qdev_new(TYPE_Q35_HOST_DEVICE)); + /* allocate ram and load rom/bios */ + pc_memory_init(pcms, get_system_memory(), rom_memory, &ram_memory); + object_property_add_child(qdev_get_machine(), "q35", OBJECT(q35_host)); object_property_set_link(OBJECT(q35_host), MCH_HOST_PROP_RAM_MEM, OBJECT(ram_memory), NULL); diff --git a/hw/pci-host/i440fx.c b/hw/pci-host/i440fx.c index 1c5ad5f918..d5426ef4a5 100644 --- a/hw/pci-host/i440fx.c +++ b/hw/pci-host/i440fx.c @@ -237,7 +237,8 @@ static void i440fx_realize(PCIDevice *dev, Error **errp) } } -PCIBus *i440fx_init(const char *host_type, const char *pci_type, +PCIBus *i440fx_init(const char *pci_type, + DeviceState *dev, MemoryRegion *address_space_mem, MemoryRegion *address_space_io, ram_addr_t ram_size, @@ -246,7 +247,6 @@ PCIBus *i440fx_init(const char *host_type, const char *pci_type, MemoryRegion *pci_address_space, MemoryRegion *ram_memory) { - DeviceState *dev; PCIBus *b; PCIDevice *d; PCIHostState *s; @@ -254,7 +254,6 @@ PCIBus *i440fx_init(const char *host_type, const char *pci_type, unsigned i; I440FXState *i440fx; - dev = qdev_new(host_type); s = PCI_HOST_BRIDGE(dev); b = pci_root_bus_new(dev, NULL, pci_address_space, address_space_io, 0, TYPE_PCI_BUS); diff --git a/include/hw/pci-host/i440fx.h b/include/hw/pci-host/i440fx.h index 52518dbf08..d02bf1ed6b 100644 --- a/include/hw/pci-host/i440fx.h +++ b/include/hw/pci-host/i440fx.h @@ -35,7 +35,8 @@ struct PCII440FXState { #define TYPE_IGD_PASSTHROUGH_I440FX_PCI_DEVICE "igd-passthrough-i440FX" -PCIBus *i440fx_init(const char *host_type, const char *pci_type, +PCIBus *i440fx_init(const char *pci_type, + DeviceState *dev, MemoryRegion *address_space_mem, MemoryRegion *address_space_io, ram_addr_t ram_size,