acrn-hypervisor/hypervisor
Shuo A Liu 15c967ad34 hv: keylocker: Add CR4 bit CR4_KL as CR4_TRAP_AND_PASSTHRU_BITS
Bit19 (CR4_KL) of CR4 is CPU KeyLocker feature enable bit. Hypervisor
traps the bit's writing to track the keylocker feature on/off of guest.
While the bit is set by guest,
 - set cr4_kl_enabled to indicate the vcpu's keylocker feature enabled status
 - load vcpu's IWKey in host (will add in later patch)
While the bit is clear by guest,
 - clear cr4_kl_enabled

This patch trap and passthru the CR4_KL bit to guest for operation.

Tracked-On: #5695
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2021-02-03 13:54:45 +08:00
..
acpi_parser hv: cleanup legacy terminologies in RTCM module 2021-01-28 11:29:25 +08:00
arch/x86 hv: keylocker: Add CR4 bit CR4_KL as CR4_TRAP_AND_PASSTHRU_BITS 2021-02-03 13:54:45 +08:00
boot hv: cleanup legacy terminologies in RTCM module 2021-01-28 11:29:25 +08:00
bsp/ld HV: add a specific stack space used in CPU booting 2020-04-29 13:56:40 +08:00
common hv: hypercall: prevent sos can touch hv/pre-launched VM resource 2021-02-02 16:55:40 +08:00
debug hv: modularization: change of multiboot API. 2021-01-27 15:59:47 +08:00
dm Fix: HV: keep reshuffling on VBARs 2021-01-15 15:00:01 +08:00
hw hv: mmu: rename hv_access_memory_region_update to ppt_clear_user_bit 2020-11-02 10:29:43 +08:00
include hv: keylocker: Add CR4 bit CR4_KL as CR4_TRAP_AND_PASSTHRU_BITS 2021-02-03 13:54:45 +08:00
lib HV: replace merge_cmdline api with strncat_s 2020-06-08 13:30:04 +08:00
release refine hypercall 2020-08-26 14:55:24 +08:00
scripts Makefile: fix build issues due to reorg of misc/ 2021-01-28 10:20:38 +08:00
Kconfig HV: config: add Kconfig and defconfigs for sbl & uefi 2018-06-08 17:21:13 +08:00
MAINTAINERS update home page information 2018-05-15 17:19:39 +08:00
Makefile acrn-config: Update generated configuration source code 2021-02-02 16:53:56 +08:00
README.rst doc: fix utf-8 punctuation, branding, spelling 2019-03-14 09:13:58 -07:00

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/