b3e6982b41
The added enforcing is only relevant in the case of AMD where the range right before the 1TB is restricted and cannot be DMA mapped by the kernel consequently leading to IOMMU INVALID_DEVICE_REQUEST or possibly other kinds of IOMMU events in the AMD IOMMU. Although, there's a case where it may make sense to disable the IOVA relocation/validation when migrating from a non-amd-1tb-aware qemu to one that supports it. Relocating RAM regions to after the 1Tb hole has consequences for guest ABI because we are changing the memory mapping, so make sure that only new machine enforce but not older ones. Signed-off-by: Joao Martins <joao.m.martins@oracle.com> Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Acked-by: Igor Mammedov <imammedo@redhat.com> Message-Id: <20220719170014.27028-12-joao.m.martins@oracle.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
309 lines
8.8 KiB
C
309 lines
8.8 KiB
C
#ifndef HW_PC_H
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#define HW_PC_H
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#include "qemu/notify.h"
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#include "qapi/qapi-types-common.h"
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#include "qemu/uuid.h"
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#include "hw/boards.h"
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#include "hw/block/fdc.h"
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#include "hw/block/flash.h"
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#include "hw/i386/x86.h"
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#include "hw/acpi/acpi_dev_interface.h"
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#include "hw/hotplug.h"
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#include "qom/object.h"
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#include "hw/i386/sgx-epc.h"
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#include "hw/firmware/smbios.h"
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#include "hw/cxl/cxl.h"
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#define HPET_INTCAP "hpet-intcap"
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/**
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* PCMachineState:
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* @acpi_dev: link to ACPI PM device that performs ACPI hotplug handling
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* @boot_cpus: number of present VCPUs
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*/
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typedef struct PCMachineState {
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/*< private >*/
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X86MachineState parent_obj;
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/* <public> */
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/* State for other subsystems/APIs: */
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Notifier machine_done;
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/* Pointers to devices and objects: */
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PCIBus *bus;
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I2CBus *smbus;
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PFlashCFI01 *flash[2];
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ISADevice *pcspk;
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DeviceState *iommu;
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/* Configuration options: */
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uint64_t max_ram_below_4g;
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OnOffAuto vmport;
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SmbiosEntryPointType smbios_entry_point_type;
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bool acpi_build_enabled;
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bool smbus_enabled;
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bool sata_enabled;
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bool hpet_enabled;
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bool i8042_enabled;
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bool default_bus_bypass_iommu;
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uint64_t max_fw_size;
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/* ACPI Memory hotplug IO base address */
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hwaddr memhp_io_base;
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SGXEPCState sgx_epc;
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CXLState cxl_devices_state;
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} PCMachineState;
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#define PC_MACHINE_ACPI_DEVICE_PROP "acpi-device"
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#define PC_MACHINE_MAX_RAM_BELOW_4G "max-ram-below-4g"
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#define PC_MACHINE_DEVMEM_REGION_SIZE "device-memory-region-size"
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#define PC_MACHINE_VMPORT "vmport"
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#define PC_MACHINE_SMBUS "smbus"
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#define PC_MACHINE_SATA "sata"
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#define PC_MACHINE_I8042 "i8042"
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#define PC_MACHINE_MAX_FW_SIZE "max-fw-size"
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#define PC_MACHINE_SMBIOS_EP "smbios-entry-point-type"
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/**
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* PCMachineClass:
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*
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* Compat fields:
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*
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* @enforce_aligned_dimm: check that DIMM's address/size is aligned by
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* backend's alignment value if provided
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* @acpi_data_size: Size of the chunk of memory at the top of RAM
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* for the BIOS ACPI tables and other BIOS
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* datastructures.
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* @gigabyte_align: Make sure that guest addresses aligned at
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* 1Gbyte boundaries get mapped to host
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* addresses aligned at 1Gbyte boundaries. This
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* way we can use 1GByte pages in the host.
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*
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*/
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struct PCMachineClass {
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/*< private >*/
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X86MachineClass parent_class;
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/*< public >*/
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/* Device configuration: */
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bool pci_enabled;
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bool kvmclock_enabled;
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const char *default_nic_model;
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/* Compat options: */
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/* Default CPU model version. See x86_cpu_set_default_version(). */
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int default_cpu_version;
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/* ACPI compat: */
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bool has_acpi_build;
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bool rsdp_in_ram;
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int legacy_acpi_table_size;
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unsigned acpi_data_size;
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int pci_root_uid;
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/* SMBIOS compat: */
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bool smbios_defaults;
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bool smbios_legacy_mode;
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bool smbios_uuid_encoded;
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/* RAM / address space compat: */
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bool gigabyte_align;
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bool has_reserved_memory;
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bool enforce_aligned_dimm;
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bool broken_reserved_end;
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bool enforce_amd_1tb_hole;
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/* generate legacy CPU hotplug AML */
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bool legacy_cpu_hotplug;
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/* use PVH to load kernels that support this feature */
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bool pvh_enabled;
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/* create kvmclock device even when KVM PV features are not exposed */
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bool kvmclock_create_always;
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/* skip passing an rng seed for legacy machines */
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bool legacy_no_rng_seed;
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};
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#define TYPE_PC_MACHINE "generic-pc-machine"
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OBJECT_DECLARE_TYPE(PCMachineState, PCMachineClass, PC_MACHINE)
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/* ioapic.c */
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GSIState *pc_gsi_create(qemu_irq **irqs, bool pci_enabled);
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/* pc.c */
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extern int fd_bootchk;
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void pc_acpi_smi_interrupt(void *opaque, int irq, int level);
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void pc_guest_info_init(PCMachineState *pcms);
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#define PCI_HOST_PROP_PCI_HOLE_START "pci-hole-start"
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#define PCI_HOST_PROP_PCI_HOLE_END "pci-hole-end"
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#define PCI_HOST_PROP_PCI_HOLE64_START "pci-hole64-start"
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#define PCI_HOST_PROP_PCI_HOLE64_END "pci-hole64-end"
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#define PCI_HOST_PROP_PCI_HOLE64_SIZE "pci-hole64-size"
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#define PCI_HOST_BELOW_4G_MEM_SIZE "below-4g-mem-size"
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#define PCI_HOST_ABOVE_4G_MEM_SIZE "above-4g-mem-size"
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void pc_pci_as_mapping_init(Object *owner, MemoryRegion *system_memory,
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MemoryRegion *pci_address_space);
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void xen_load_linux(PCMachineState *pcms);
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void pc_memory_init(PCMachineState *pcms,
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MemoryRegion *system_memory,
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MemoryRegion *rom_memory,
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MemoryRegion **ram_memory,
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uint64_t pci_hole64_size);
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uint64_t pc_pci_hole64_start(void);
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DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus *pci_bus);
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void pc_basic_device_init(struct PCMachineState *pcms,
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ISABus *isa_bus, qemu_irq *gsi,
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ISADevice **rtc_state,
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bool create_fdctrl,
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uint32_t hpet_irqs);
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void pc_cmos_init(PCMachineState *pcms,
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BusState *ide0, BusState *ide1,
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ISADevice *s);
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void pc_nic_init(PCMachineClass *pcmc, ISABus *isa_bus, PCIBus *pci_bus);
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void pc_i8259_create(ISABus *isa_bus, qemu_irq *i8259_irqs);
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/* port92.c */
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#define PORT92_A20_LINE "a20"
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#define TYPE_PORT92 "port92"
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/* pc_sysfw.c */
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void pc_system_flash_create(PCMachineState *pcms);
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void pc_system_flash_cleanup_unused(PCMachineState *pcms);
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void pc_system_firmware_init(PCMachineState *pcms, MemoryRegion *rom_memory);
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bool pc_system_ovmf_table_find(const char *entry, uint8_t **data,
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int *data_len);
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void pc_system_parse_ovmf_flash(uint8_t *flash_ptr, size_t flash_size);
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/* hw/i386/acpi-common.c */
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void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
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const CPUArchIdList *apic_ids, GArray *entry,
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bool force_enabled);
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/* sgx.c */
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void pc_machine_init_sgx_epc(PCMachineState *pcms);
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extern GlobalProperty pc_compat_7_0[];
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extern const size_t pc_compat_7_0_len;
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extern GlobalProperty pc_compat_6_2[];
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extern const size_t pc_compat_6_2_len;
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extern GlobalProperty pc_compat_6_1[];
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extern const size_t pc_compat_6_1_len;
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extern GlobalProperty pc_compat_6_0[];
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extern const size_t pc_compat_6_0_len;
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extern GlobalProperty pc_compat_5_2[];
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extern const size_t pc_compat_5_2_len;
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extern GlobalProperty pc_compat_5_1[];
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extern const size_t pc_compat_5_1_len;
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extern GlobalProperty pc_compat_5_0[];
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extern const size_t pc_compat_5_0_len;
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extern GlobalProperty pc_compat_4_2[];
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extern const size_t pc_compat_4_2_len;
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extern GlobalProperty pc_compat_4_1[];
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extern const size_t pc_compat_4_1_len;
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extern GlobalProperty pc_compat_4_0[];
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extern const size_t pc_compat_4_0_len;
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extern GlobalProperty pc_compat_3_1[];
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extern const size_t pc_compat_3_1_len;
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extern GlobalProperty pc_compat_3_0[];
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extern const size_t pc_compat_3_0_len;
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extern GlobalProperty pc_compat_2_12[];
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extern const size_t pc_compat_2_12_len;
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extern GlobalProperty pc_compat_2_11[];
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extern const size_t pc_compat_2_11_len;
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extern GlobalProperty pc_compat_2_10[];
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extern const size_t pc_compat_2_10_len;
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extern GlobalProperty pc_compat_2_9[];
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extern const size_t pc_compat_2_9_len;
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extern GlobalProperty pc_compat_2_8[];
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extern const size_t pc_compat_2_8_len;
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extern GlobalProperty pc_compat_2_7[];
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extern const size_t pc_compat_2_7_len;
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extern GlobalProperty pc_compat_2_6[];
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extern const size_t pc_compat_2_6_len;
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extern GlobalProperty pc_compat_2_5[];
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extern const size_t pc_compat_2_5_len;
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extern GlobalProperty pc_compat_2_4[];
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extern const size_t pc_compat_2_4_len;
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extern GlobalProperty pc_compat_2_3[];
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extern const size_t pc_compat_2_3_len;
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extern GlobalProperty pc_compat_2_2[];
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extern const size_t pc_compat_2_2_len;
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extern GlobalProperty pc_compat_2_1[];
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extern const size_t pc_compat_2_1_len;
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extern GlobalProperty pc_compat_2_0[];
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extern const size_t pc_compat_2_0_len;
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extern GlobalProperty pc_compat_1_7[];
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extern const size_t pc_compat_1_7_len;
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extern GlobalProperty pc_compat_1_6[];
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extern const size_t pc_compat_1_6_len;
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extern GlobalProperty pc_compat_1_5[];
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extern const size_t pc_compat_1_5_len;
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extern GlobalProperty pc_compat_1_4[];
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extern const size_t pc_compat_1_4_len;
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#define DEFINE_PC_MACHINE(suffix, namestr, initfn, optsfn) \
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static void pc_machine_##suffix##_class_init(ObjectClass *oc, void *data) \
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{ \
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MachineClass *mc = MACHINE_CLASS(oc); \
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optsfn(mc); \
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mc->init = initfn; \
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} \
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static const TypeInfo pc_machine_type_##suffix = { \
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.name = namestr TYPE_MACHINE_SUFFIX, \
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.parent = TYPE_PC_MACHINE, \
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.class_init = pc_machine_##suffix##_class_init, \
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}; \
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static void pc_machine_init_##suffix(void) \
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{ \
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type_register(&pc_machine_type_##suffix); \
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} \
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type_init(pc_machine_init_##suffix)
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#endif
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