This commit fixed the vm_delete function that can delete
memory cleanly.

Signed-off-by: sjf <s1973853034@163.com>

This commit ludes the addition of system
images, QEMU, and DTB.

Signed-off-by: sjf <s1973853034@163.com>

This commit optimizes the pagetable used by the virtual machine.
Specifically, the Linux VM's pagetable size is 4MB, while
the Zephyr VM's pagetable size is 0.5MB. Additionally, I have
addressed the circular reference issue involving the files
zvm.h, zvm_mm.h, os.h, os_linux.h, and os_zephyr.h

Signed-off-by: sjf <s1973853034@163.com>

This commit fixed the linux can't run,and now
you can run zephyr and linux virtual machine
simultaneously.

Signed-off-by: sjf <s197853034@163com>

This commit achieved the function that can allocate memory dynamically.
Signed-off-by:  <sjf&lt;s1973853034@163.com>

	Update readme.rst for the master branch.
signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

	We have refactored the git repository and made some changes to
	errors caused by git tools.
signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

	We fixed some link referencing issues and formatting errors.
Signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

	We updated all the documentation of zvm system, and built a
	comprehensive document architecture that facilitates users to
	easily read relevant documents. At the same time, We have
	corrected many errors in the origin documents.
signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    We update the zvm's download address for the system.
signed-off-by: Chenglai Xiong <xiongch@hnu.edu.cn>

    We have added a list of supported hardware simulation platforms, system
    code structure directories, and arrangements for the next optimization
    plan.
signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

       We update the zvm document for quickly build and debug zvm
       system, which modified some operation error in before
       documentation.
signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

Signed-off-by: sjf <s1973853034@163.com>

    Update readme.rst to add support for git readme web page redirection, which can be redirected to different document pages through web pages.
signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

Signed-off-by: cocoeoli <1981639884@qq.com>

Signed-off-by: cocoeoli <1981639884@qq.com>

    We have support fvp_cortex_a55x4_a75x2 board platform and remove
    fvp_cortex_a55 platform. Now, when using auto build to build fvp
    boards, the default board is fvp_cortex_a55x4_a75x2.
signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    We found some zvm doc has some error that may cause incomplete construction steps.
    So, we changed this document. By the way, all the document has been
    changed to rst format.
signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    Add shell command for zvm system, for auto build & debug zvm system
    in qemu and fvp platform.

signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    When we merge diff branch in local workspace and pull branch from
    remote workspace. There are some conflict we must to process.

signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    Add all subsystem files and qemu related file for zvm system.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    Due to the limitations of Zephyr itself, the Linux we support is limited and cannot support all features. Therefore, we provide a sample that we support.
    You can use these configurations to build an available Linux VM.
signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    This example is based on Zephyr's basic shell and adds multiple serial port support to expand visualization operations.

signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    Added support for fixed board cards with ZVM, including specific support for static memory configuration of virtual machines, virtual device configuration, etc.

signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    We add below code:
- os*: os related code, like zephyr and linux.
- elfloader: add zephyr os's elf boot support.
- latency_measure: add latency measurement.
- vm*: include vcpu, vmem, virq, vm manager and other virtual module
that not relay on special hardware.

signed-of-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    Add a virtual dev module for user to  add different vdev. For
    example, using a list to support uart.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    We add support for fvp_cortex_a55x4_a75x2_smp boards.

signed-off-by: Chenglai Xiong <xiongcl@hnu.edu.cn>

    When booting multiple cpus, the cpu's affinities in different soc is
    different, So we add this for booting new fvp board.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

When adding subsystem to origin zephyr project, we should add some
kconfig options for user.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    A vcpu thread need to schedule in zephyr scheduling system. So, we
    add some function for vcpu schedule.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

    Add thread flag for marking vcpu, which will be used for vcpu
    context switch. If the thread is not a vcpu, no context switch need
    to process.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

 The zvm system need to support hypervisor and VHE mode, which require
 some register definition that not exist in zephyr2.7.3. So we add these
 info for zvm.

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

- gicv3: add some gicv3 macro
- gicv3_priv: add some gicv3 macro
- head file(gic.h, arm-gic.h): add gicv3 related header data struct

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

-Kconfig: configure zvm subsystem
-exc: hvc support
-kernel headfile: add arm64 context
-offset: add Arm64 context offset

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

-fpu code for supporting fpu
-isr code for vcpu switch
-mmu code for vhe mode's mm translation
-offset code for locating context on platform
-prep code for debugging uart and init vcpu flag
-reset code for hardware feature initial
-smp code for supporting smp init for zvm
-switch code for hvc support when thread switch
-thread code for thread context init for zvm

signed-off-by: Chenglai <Xiong&lt;xiongcl@hnu.edu.cn>

This commit updates the copyright notice in source files from
“Copyright (c) 2022 xcl <xiongcl@hnu.cn>” to “Copyright 2021-2022 HNU”.
This change is made to keep up with the current year and properly
attribute the institution. Additionally, this commit adds copyright
notice for the configuration files, which were previously missing.

Signed-off-by: Jianchun Luo <jianchun.luo@qq.com>