252 lines
6.6 KiB
ReStructuredText
252 lines
6.6 KiB
ReStructuredText
.. _glossary:
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Glossary of Terms
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#################
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.. glossary::
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:sorted:
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ACPI
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Advanced Configuration and Power Interface
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ACRN
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ACRN is a flexible, lightweight reference hypervisor, built with
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real-time and safety-criticality in mind, optimized to streamline
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embedded development through an open source platform.
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AcrnGT
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Intel GVT-g technology for ACRN.
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ACRN-DM
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A user mode device model application running in Service OS to provide
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device emulations in ACRN hypervisor.
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aperture
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CPU-visible graphics memory
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low GM
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see :term:`aperture`
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API
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Application Program Interface: A defined set of routines and protocols for
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building application software.
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APL
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Apollo Lake platform
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BDW
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Broadwell, Intel 5th-generation CPU platform
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BIOS
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Basic Input/Output System.
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Dom0 i915
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The Intel Graphics driver running in Domain 0
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ELSP
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GPU's ExecList submission port
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GGTT
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Global Graphic Translation Table. The virtual address page table
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used by a GPU to reference system memory.
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GMA
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Graphics Memory Address
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GPU
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Graphics Processing Unit
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GTT
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Graphic Translation Table
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GTTMMADR
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Graphic Translation Table Memory Map Address
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GuC
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Graphic Micro-controller
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GVT
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Graphics Virtual Technology. GVT-g core device model module up-streamed
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to the Linux kernel.
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GVT-d
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Virtual dedicated graphics acceleration (one VM to one physical GPU)
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GVT-g
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Virtual graphics processing unit (multiple VMs to one physical GPU)
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GVT-s
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Virtual shared graphics acceleration (multiple VMs to one physical GPU)
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Hidden GM
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Hidden or High graphics memory, not visible to the CPU.
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High GM
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See :term:`Hidden GM`
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Hybrid Mode
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One of three operation modes (hybrid, partition, sharing) that ACRN supports.
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In this mixed mode, physical hardware resources can be both partitioned to
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individual user VMs and shared across user VMs.
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I2C
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Inter-Integrated Circuit
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i915
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The Intel Graphics driver
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IC
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Instrument Cluster
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IDT
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Interrupt Descriptor Table: a data structure used by the x86
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architecture to implement an interrupt vector table. The IDT is used
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to determine the correct response to interrupts and exceptions.
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ISR
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Interrupt Service Routine: Also known as an interrupt handler, an ISR
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is a callback function whose execution is triggered by a hardware
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interrupt (or software interrupt instructions) and is used to handle
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high-priority conditions that require interrupting the current code
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executing on the processor.
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IVE
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In-Vehicle Experience
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IVI
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In-vehicle Infotainment
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OS
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Operating System
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OSPM
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Operating System Power Management
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Passthrough Device
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Physical devices (typically PCI) exclusively assigned to a guest. In
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the Project ACRN architecture, passthrough devices are owned by the
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foreground OS.
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Partition Mode
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One of three operation modes (partition, sharing, hybrid) that ACRN supports.
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Physical hardware resources are partitioned to individual user VMs.
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PCI
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Peripheral Component Interface.
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PDE
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Page Directory Entry
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PM
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Power Management
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Pre-launched VM
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Pre-launched VMs are started by the ACRN hypervisor before the
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Service VM is launched. (See :term:`Post-launched VM`)
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Post-launched VM
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Post-Launched VMs are launched and configured by the Service VM.
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(See :term:`Pre-launched VM`)
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PTE
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Page Table Entry
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PV
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Para-virtualization (See
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https://en.wikipedia.org/wiki/Paravirtualization)
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PVINFO
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Para-Virtualization Information Page, a MMIO range used to
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implement para-virtualization
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QEMU
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Quick EMUlator. Machine emulator running in user space.
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RSE
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Rear Seat Entertainment
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RDT
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Intel Resource Director Technology (Intel RDT) provides a set of
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monitoring and allocation capabilities to control resources such as
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Cache and Memory. ACRN supports Cache Allocation Technology (CAT) and
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Memory Bandwidth Allocation (MBA).
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RTVM
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Real-time VM. A specially-designed VM that can run hard real-time or
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soft real-time workloads (or applications) much more efficiently
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than the typical User VM through the use of a passthrough interrupt
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controller, polling-mode Virtio, Intel RDT allocation features (CAT,
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MBA), and I/O prioritization. RTVMs are typically a :term:`Pre-launched VM`.
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A non-:term:`Safety VM` with real-time requirements is a
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:term:`Post-launched VM`.
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Safety VM
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A special VM with dedicated hardware resources, running in
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partition mode, and providing overall system health-monitoring
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functionality. Currently, a Safety VM is always a pre-launched User VM.
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SDC
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Software Defined Cockpit
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Service VM
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The Service VM is generally the first VM launched by ACRN and can
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access hardware resources directly by running native drivers and
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provides device sharing services to User VMs via the Device Model.
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Sharing Mode
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One of three operation modes (sharing, hybrid, partition) that ACRN supports.
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Most of the physical hardware resources are shared across user VMs.
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SOS
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Obsolete, see :term:`Service VM`
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Service OS
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Obsolete, see :term:`Service VM`
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UEFI
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Unified Extensible Firmare Interface. UEFI replaces the
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traditional BIOS on PCs, while also providing BIOS emulation for
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backward compatibility. UEFI can run in 32-bit or 64-bit mode and, more
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important, support Secure Boot, checking the OS validity to ensure no
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malware has tampered with the boot process.
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User VM
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User Virtual Machine.
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UOS
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Obsolete, see :term:`User VM`
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User OS
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Obsolete, see :term:`User VM`
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vGPU
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Virtual GPU Instance, created by GVT-g and used by a VM
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HSM
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Hypervisor Service Module
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Virtio-BE
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Back-End, VirtIO framework provides front-end driver and back-end driver
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for IO mediators, developer has habit of using Shorthand. So they say
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Virtio-BE and Virtio-FE
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Virtio-FE
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Front-End, VirtIO framework provides front-end driver and back-end
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driver for IO mediators, developer has habit of using Shorthand. So
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they say Virtio-BE and Virtio-FE
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VM
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Virtual Machine, a guest OS running environment
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VMM
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Virtual Machine Monitor
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VMX
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Virtual Machine Extension
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VT
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Intel Virtualization Technology
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VT-d
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Virtualization Technology for Directed I/O
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