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Wu Zhou 8af2c263db hv: disable HFI and ITD for guests 
The Hardware Feedback Interface (HFI) and Intel® Thread Director (ITD)
features require OS to provide a physical page address to
IA32_HW_FEEDBACK_PTR. Then the hardware will update the processor
information to the page address. The issue is that guest VM will program
its GPA to that MSR, causing great risk of tempering memory.

So HFI and ITD should be made invisible to guests, until we provide
proper virtulization of those features.

Tracked-On: #8463
Signed-off-by: Wu Zhou <wu.zhou@intel.com>
Reviewed-by: Junjie Mao <junjie.mao@intel.com>
 		2023-08-01 14:57:23 +08:00
..
acpi_parser Update copyright year range in code headers 2022-07-15 11:48:35 +08:00
arch/x86 hv: disable HFI and ITD for guests 2023-08-01 14:57:23 +08:00
boot hv: tsc: calibrate TSC by HPET 2022-07-17 16:48:47 +08:00
bsp/ld HV: fix MISRA violation of _ld_ram_xxx 2021-11-26 16:45:17 +08:00
common hv: Write _CPC to guests' ACPI when VHWP is enabled 2023-06-09 10:06:42 +08:00
debug hv: support for pci uart with high mmio 2022-11-21 16:50:05 +08:00
dm hv: vpci: ignore PCI I/O BAR with non-zero upper 16 bits 2023-06-26 14:40:57 +08:00
hw hv: pci: use mmio_read/write directly 2022-10-26 01:02:20 +08:00
include hv: disable HFI and ITD for guests 2023-08-01 14:57:23 +08:00
lib Update copyright year range in code headers 2022-07-15 11:48:35 +08:00
quirks Update copyright year range in code headers 2022-07-15 11:48:35 +08:00
release hv: fix compile issue in release mode 2022-10-21 14:24:02 +08:00
scripts Makefile: do not try to figure out BOARD and SCENARIO for cleanup 2022-10-26 14:09:44 +08:00
Makefile hv: change the version format 2022-11-21 09:45:26 +08:00
README.rst doc: fix utf-8 punctuation, branding, spelling 2019-03-14 09:13:58 -07:00

README.rst 

ACRN Hypervisor
###############

The open source `Project ACRN`_ defines a device hypervisor reference stack and
an architecture for running multiple software subsystems, managed securely, on
a consolidated system by means of a virtual machine manager. It also defines a
reference framework implementation for virtual device emulation, called the
"ACRN Device Model".

The ACRN Hypervisor is a Type 1 reference hypervisor stack, running directly on
the bare-metal hardware, and is suitable for a variety of IoT and embedded
device solutions. The ACRN hypervisor addresses the gap that currently exists
between datacenter hypervisors, and hard partitioning hypervisors. The ACRN
hypervisor architecture partitions the system into different functional
domains, with carefully selected guest OS sharing optimizations for IoT and
embedded devices.

You can find out more about Project ACRN on the `Project ACRN documentation`_
website.

.. _`Project ACRN`: https://projectacrn.org
.. _`ACRN Hypervisor`: https://github.com/projectacrn/acrn-hypervisor
.. _`Project ACRN documentation`: https://projectacrn.github.io/