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Documentation: update to AcrnGT official name
Update the ACRN documentation to use the official name of GVT-g in ACRN to "AcrnGT" (ACRN-GT was previously widely used). Also update the few occurences of "GVT-G" to "GVT-g" to be consistent across our documentation. This includes a couple of file name updates. Signed-off-by: Geoffroy Van Cutsem <geoffroy.vancutsem@intel.com>
This commit is contained in:
Geoffroy Van Cutsem
David Kinder
parent
97aeb7f4ff
commit
047f4e90a2
@ -5,13 +5,13 @@ ACRN GVT-g APIs
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GVT-g is Intel's open source GPU virtualization solution and is up-streamed to
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the Linux kernel. Its implementation over KVM is named KVMGT, over Xen it is
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named XenGT, and over ACRN it is named ACRN-GT. GVT-g can exports multiple
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named XenGT, and over ACRN it is named AcrnGT. GVT-g can exports multiple
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virtual GPU (vGPU) instances for virtual machine system (VM). A VM could be
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assigned one vGPU instance. The guest OS graphic driver needs minor
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modification to drive the vGPU adapter in a VM. Every vGPU instance will adopt
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the full HW GPU’s accelerate capability for 3D render and display.
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In the following document, ACRN-GT refers to the glue layer between ACRN
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In the following document, AcrnGT refers to the glue layer between ACRN
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hypervisor and GVT-g core device model. It works as the agent of
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hypervisor-related services. It is the only layer that needs to get rewritten
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when porting GVT-g to another hypervisor. For simplicity, in the rest of this
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@ -47,7 +47,7 @@ Intel GVT-g Host Support(vGPU device model)
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:internal:
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VHM APIs called from ACRN-GT
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VHM APIs called from AcrnGT
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****************************
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The Virtio and Hypervisor Service Module (VHM) is a kernel module in the
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@ -83,14 +83,14 @@ responses to user space modules, notified by vIRQ injections.
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.. _MPT_interface:
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ACRN-GT mediated pass-through (MPT) interface
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AcrnGT mediated pass-through (MPT) interface
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**************************************************
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ACRN-GT receives request from GVT module through MPT interface. Refer to the
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AcrnGT receives request from GVT module through MPT interface. Refer to the
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:ref:`Graphic_mediation` page.
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A collection of function callbacks in the MPT module will be attached to GVT
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host at the driver loading stage. ACRN-GT MPT function callbacks are described
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host at the driver loading stage. AcrnGT MPT function callbacks are described
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as below:
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@ -185,10 +185,10 @@ in the `ACRN kernel GitHub repo`_
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.. _sysfs_interface:
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ACRN-GT sysfs interface
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AcrnGT sysfs interface
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***********************
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This section contains APIs for the ACRN-GT sysfs interface. Sources are found
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This section contains APIs for the AcrnGT sysfs interface. Sources are found
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in the `ACRN kernel GitHub repo`_
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@ -212,7 +212,7 @@ figure out what kind of error occurs.
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/sys/kernel/gvt/
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----------------
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The ``/sys/kernel/gvt/`` class sub-directory belongs to ACRN-GT and provides a
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The ``/sys/kernel/gvt/`` class sub-directory belongs to AcrnGT and provides a
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centralized sysfs interface for configuring vGPU properties.
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@ -1,6 +1,6 @@
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.. _APL_GVT-G-hld:
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.. _APL_GVT-g-hld:
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GVT-G high-level design
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GVT-g high-level design
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#######################
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Introduction
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@ -55,7 +55,7 @@ native graphics driver can run directly inside a VM.
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Intel® GVT-g technology for Apollo Lake (APL) has been implemented in
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open source hypervisors or Virtual Machine Monitors (VMMs):
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- Intel® GVT-g for ACRN, also known as, "ACRN-GVT"
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- Intel® GVT-g for ACRN, also known as, "AcrnGT"
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- Intel® GVT-g for KVM, also known as, "KVMGT"
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- Intel® GVT-g for Xen, also known as, "XenGT"
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@ -349,7 +349,7 @@ exposed by the GVT device model.
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:align: center
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:name: gvt-arch
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ACRN-GVT High-level Architecture
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AcrnGT High-level Architecture
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Key Techniques
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**************
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@ -892,18 +892,18 @@ UOS. This policy can be enforced through an SOS i915 kernel command line
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parameter, and can replace the default in-order command submission (no
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preemption) policy.
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ACRN-GT
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AcrnGT
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*******
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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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ACRN-GT is the GVT-g implementation on the ACRN hypervisor. It adapts
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AcrnGT is the GVT-g implementation on the ACRN hypervisor. It adapts
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the MPT interface of GVT-g onto ACRN by using the kernel APIs provided
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by ACRN.
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:numref:`full-pic` shows the full architecture of ACRN-GT with a Linux Guest
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:numref:`full-pic` shows the full architecture of AcrnGT with a Linux Guest
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OS and an Android Guest OS.
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.. figure:: images/APL_GVT-g-full-pic.png
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@ -911,16 +911,16 @@ OS and an Android Guest OS.
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:align: center
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:name: full-pic
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Full picture of the ACRN-GT
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Full picture of the AcrnGT
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ACRN-GT in kernel
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AcrnGT in kernel
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=================
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The ACRN-GT module in the SOS kernel acts as an adaption layer to connect
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The AcrnGT module in the SOS kernel acts as an adaption layer to connect
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between GVT-g in the i915, the VHM module, and the ACRN-DM user space
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application:
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- ACRN-GT module implements the MPT interface of GVT-g to provide
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- AcrnGT module implements the MPT interface of GVT-g to provide
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services to it, including set and unset trap areas, set and unset
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write-protection pages, etc.
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@ -931,10 +931,10 @@ application:
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- It provides user space interfaces through ``sysfs`` to the user space
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ACRN-DM, so that DM can manage the lifecycle of the virtual GPUs.
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ACRN-GT in DM
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AcrnGT in DM
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=============
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To emulate a PCI device to a Guest, we need an ACRN-GT sub-module in the
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To emulate a PCI device to a Guest, we need an AcrnGT sub-module in the
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ACRN-DM. This sub-module is responsible for:
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- registering the virtual GPU device to the PCI device tree presented to
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@ -1,6 +1,6 @@
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.. _GVT-G-porting:
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.. _GVT-g-porting:
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GVT-G Enabling and Porting Guide
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GVT-g Enabling and Porting Guide
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################################
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Introduction
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@ -8,14 +8,14 @@ Introduction
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GVT-g is Intel's Open Source GPU virtualization solution, up-streamed to
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the Linux kernel. Its implementation over KVM is named KVMGT, over Xen
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is named XenGT, and over ACRN is named ACRN-GT. GVT-g can export
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is named XenGT, and over ACRN is named AcrnGT. GVT-g can export
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multiple virtual-GPU (vGPU) instances for virtual machine (VM) system. A
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VM can be assigned one instance of a vGPU. The guest OS graphic driver
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needs only minor modifications to drive the vGPU adapter in a VM. Every
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vGPU instance adopts the full HW GPU's acceleration capability for
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media, 3D rendering, and display.
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ACRN-GT refers to the glue layer between the ACRN hypervisor and GVT-g
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AcrnGT refers to the glue layer between the ACRN hypervisor and GVT-g
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core device model. It works as the agent of hypervisor-related services.
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It is the only layer that needs to be rewritten when porting GVT-g to
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other specific hypervisors.
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@ -45,14 +45,14 @@ Overall Components
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******************
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For the GVT-g solution for the ACRN hypervisor, there are two
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key modules: ACRN-GT and GVT:
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key modules: AcrnGT and GVT:
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ACRN-GT module
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Compiled from ``drivers/gpu/drm/i915/gvt/acrn_gvt.c``, the ACRN-GT
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AcrnGT module
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Compiled from ``drivers/gpu/drm/i915/gvt/acrn_gvt.c``, the AcrnGT
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module acts as a glue layer between the ACRN hypervisor and the
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interface to the ACRN-DM in user space.
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ACRN-GT is the agent of hypervisor related services, including I/O trap
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AcrnGT is the agent of hypervisor related services, including I/O trap
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request, IRQ injection, address translation, VM controls, etc. It also
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listens to ACRN hypervisor in ``acrngt_emulation_thread``, and informs GVT
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module of I/O traps.
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@ -61,7 +61,7 @@ ACRN-GT module
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Device Model's routines, and receives request from GVT module through
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the :ref:`MPT_interface`.
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User space programs, such as ACRN-DM, communicate with ACRN-GT through
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User space programs, such as ACRN-DM, communicate with AcrnGT through
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the :ref:`sysfs_interface` by writing to sysfs node
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``/sys/kernel/gvt/control/create_gvt_instance``.
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@ -87,7 +87,7 @@ VHM module
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I/O responses to user space modules, notified by vIRQ injections.
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.. figure:: images/GVT-G-porting-image1.png
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.. figure:: images/GVT-g-porting-image1.png
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:width: 700px
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:align: center
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:name: GVT-g_components
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@ -101,27 +101,27 @@ Core scenario interaction sequences
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vGPU creation scenario
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======================
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In this scenario, ACRN-GT receives a create request from ACRN-DM. It
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In this scenario, AcrnGT receives a create request from ACRN-DM. It
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calls GVT's :ref:`intel_gvt_ops_interface` to inform GVT of vGPU
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creation. This interface sets up all vGPU resources such as MMIO, GMA,
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PVINFO, GTT, DISPLAY, and Execlists, and calls back to the ACRN-GT
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PVINFO, GTT, DISPLAY, and Execlists, and calls back to the AcrnGT
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module through the :ref:`MPT_interface` ``attach_vgpu``. Then, the
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ACRN-GT module sets up an I/O request server and asks to trap the PCI
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AcrnGT module sets up an I/O request server and asks to trap the PCI
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configure space of the vGPU (virtual device 0:2:0) via VHM's APIs.
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Finally, the ACRN-GT module launches a ACRN-GT emulation thread to
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Finally, the AcrnGT module launches a AcrnGT emulation thread to
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listen to I/O trap notifications from HVM and ACRN hypervisor.
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vGPU destroy scenario
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=====================
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In this scenario, ACRN-GT receives a destroy request from ACRN-DM. It
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In this scenario, AcrnGT receives a destroy request from ACRN-DM. It
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calls GVT's :ref:`intel_gvt_ops_interface` to inform GVT of the vGPU destroy
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request, and cleans up all vGPU resources.
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vGPU pci configure space write scenario
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=======================================
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ACRN traps the vGPU's PCI config space write, notifies ACRN-GT's
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ACRN traps the vGPU's PCI config space write, notifies AcrnGT's
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``acrngt_emulation_thread``, which calls ``acrngt_hvm_pio_emulation`` to
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handle all I/O trap notifications. This routine calls the GVT's
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:ref:`intel_gvt_ops_interface` ``emulate_cfg_write`` to emulate the vGPU PCI
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Before Width: | Height: | Size: 20 KiB After Width: | Height: | Size: 20 KiB |
@ -26,7 +26,7 @@ specific areas within the ACRN hypervisor system.
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ACPI-virt-hld.rst
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interrupt-hld.rst
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APL_GVT-g-hld.rst
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GVT-G-porting.rst
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GVT-g-porting.rst
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Contributing to the project
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***************************
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@ -16,6 +16,9 @@ Glossary of Terms
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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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