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acrn-hypervisor
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Minggui Cao b3bd153180 hv: expose PEBS capability and MSR as PMU_PT flag 
Requirement: in CPU partition VM (RTVM), vtune or perf can be used to
sample hotspot code path to tune the RT performance, It need support
PMU/PEBS (Processor Event Based Sampling). Intel TCC asks for it, too.

It exposes PEBS related capabilities/features and MSRs to CPU
partition VM, like RTVM. PEBS is a part of PMU. Also PEBS needs
DS (Debug Store) feature to support. So DS is exposed too.

Limitation: current it just support PEBS feature in VM level, when CPU
traps to HV, the performance counter will stop. Perf global control
MSR is used to do this work. So, the counters shall be close to native.

Tracked-On: #6966
Acked-by: Anthony Xu <anthony.xu@intel.com>
Signed-off-by: Minggui Cao <minggui.cao@intel.com>
 		2022-03-10 14:34:33 +08:00
..
acpi_parser hv: rename CONFIG_GPU_SBDF to CONFIG_IGD_SBDF 2021-11-28 14:23:29 +08:00
arch/x86 hv: expose PEBS capability and MSR as PMU_PT flag 2022-03-10 14:34:33 +08:00
boot hv:fix violations of coding guideline C-ST-04 2022-02-18 18:41:07 +08:00
bsp/ld HV: fix MISRA violation of _ld_ram_xxx 2021-11-26 16:45:17 +08:00
common hv: revert NMI notification by INIT signal 2022-03-10 14:34:33 +08:00
debug hv: remove CONFIG_LOG_DESTINATION 2021-12-06 14:24:40 +08:00
dm hv:fix violations of coding guideline C-ST-04 2022-02-18 18:41:07 +08:00
hw hv:fix violations of coding guideline C-ST-04 2022-02-18 18:41:07 +08:00
include hv: expose PEBS capability and MSR as PMU_PT flag 2022-03-10 14:34:33 +08:00
lib HV: treewide: fix violations of coding guideline C-TY-12 2021-11-04 18:15:47 +08:00
quirks hv: Avoid using SMBIOS major version 2021-09-08 15:22:12 +08:00
release hv: remove CONFIG_LOG_DESTINATION 2021-12-06 14:24:40 +08:00
scripts Makefile: remove default BOARD and SCENARIO values 2022-02-28 10:04:15 +08:00
MAINTAINERS
…
Makefile Makefile: put 'serial.conf' in final location 2022-02-18 18:38:45 +08:00
README.rst
…

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/