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acrn-hypervisor
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Haiwei Li 9c139681f2 hv: s3: hwp: enable hwp after resume from s3 
After Service OS resume from s3, an error occurs:

[3649827us][cpu=1][idle1][sev=2][seq=1749]:= Unhandled exception: 13 (General Protection)

[3658622us][cpu=1][idle1][sev=2][seq=1750]:
Host Registers:

[3664881us][cpu=1][idle1][sev=2][seq=1751]:=  Vector=0x000000000000000D  RIP=0x000000000040F9F0

[3674213us][cpu=1][idle1][sev=2][seq=1752]:=     RAX=0x0000000080003801  RBX=0x0000000001800800  RCX=0x0000000000000774

[3685787us][cpu=1][idle1][sev=2][seq=1753]:=     RDX=0x0000000000000000  RDI=0x0000000000000080  RSI=0x0000000000000000

[3697371us][cpu=1][idle1][sev=2][seq=1754]:=     RSP=0x0000000000616C18  RBP=0x0000000000616C38  RBX=0x0000000001800800

[3708947us][cpu=1][idle1][sev=2][seq=1755]:=      R8=0x0000000000000038   R9=0x0000000000000001  R10=0x00000000000003F8

[3720539us][cpu=1][idle1][sev=2][seq=1756]:=     R11=0x000000000000000D  R12=0x0000000000458245  R13=0x0000000000000000

[3732114us][cpu=1][idle1][sev=2][seq=1757]:=  RFLAGS=0x0000000000010202  R14=0x0000000000000000  R15=0x0000000000000000

[3743699us][cpu=1][idle1][sev=2][seq=1758]:= ERRCODE=0x0000000000000000   CS=0x0000000000000008   SS=0x0000000000000010

[3755305us][cpu=1][idle1][sev=2][seq=1759]:= CR2=0x0000000000000000

The error occurs in `msr_write(MSR_IA32_HWP_REQUEST, reg)`, when HWP is
not available.

This patch is to initialize HWP after resume.

Tracked-On: #8623
Signed-off-by: Haiwei Li <haiwei.li@intel.com>
 		2024-06-27 11:26:09 +08:00
..
acpi_parser Update copyright year range in code headers 2022-07-15 11:48:35 +08:00
arch/x86 hv: s3: hwp: enable hwp after resume from s3 2024-06-27 11:26:09 +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: asyncio: support data match of the same addr 2024-06-05 15:23:33 +08:00
debug doc: update doc for vUART to hypervisor console switch key 2024-06-25 11:07:21 +08:00
dm hv: asyncio: support data match of the same addr 2024-06-05 15:23:33 +08:00
hw hv: pci: use mmio_read/write directly 2022-10-26 01:02:20 +08:00
include hv: asyncio: support data match of the same addr 2024-06-05 15:23:33 +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: enable thermal lvt interrupt 2024-05-16 09:40:32 +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/