System Emulation Guest Hardware Specifications

This section of the manual contains specifications of guest hardware that is specific to QEMU.

• POWER9 XIVE interrupt controller
  • XIVE architecture
  • Overview of the QEMU models for XIVE
• XIVE for sPAPR (pseries machines)
  • CAS Negotiation
  • KVM negotiation
  • XIVE Device tree properties
  • IRQ number space
  • Monitoring XIVE
• NUMA mechanics for sPAPR (pseries machines)
  • Associativity and ibm,associativity property
  • Relative Performance Distance and ibm,associativity-reference-points
• How the pseries Linux guest calculates NUMA distances
• pseries NUMA mechanics
  • Translating user distance to kernel distance
  • How associativity domains are assigned
  • Limitations of the implementation
• Legacy (5.1 and older) pseries NUMA mechanics
• QEMU and ACPI BIOS Generic Event Device interface
  • GED IO interface (4 byte access)
• QEMU TPM Device
  • Guest-side hardware interface
  • fw_cfg interface
  • ACPI interface
  • TPM backend devices
  • Migration with the TPM emulator
• APEI tables generating and CPER record
  • Design Details
• QEMU<->ACPI BIOS CPU hotplug interface
  • Legacy ACPI CPU hotplug interface registers
  • Modern ACPI CPU hotplug interface registers
  • Typical usecases
• QEMU<->ACPI BIOS memory hotplug interface
  • Memory hot-plug interface (IO port 0xa00-0xa17, 1-4 byte access)
  • Memory hot remove process diagram
• QEMU<->ACPI BIOS PCI hotplug interface
  • ACPI GPE block (IO ports 0xafe0-0xafe3, byte access)
  • PCI slot injection notification pending (IO port 0xae00-0xae03, 4-byte access)
  • PCI slot removal notification (IO port 0xae04-0xae07, 4-byte access)
  • PCI device eject (IO port 0xae08-0xae0b, 4-byte access)
  • PCI removability status (IO port 0xae0c-0xae0f, 4-byte access)
• QEMU<->ACPI BIOS NVDIMM interface
  • NVDIMM ACPI Background
  • QEMU NVDIMM Implementation
  • _DSM process diagram
  • NVDIMM hotplug
  • QEMU internal use only _DSM functions