audk/OvmfPkg/CloudHv
Kun Qin 152e37cc5a OvmfPkg: Pipeline: Resolve SecureBootVariableLib dependency
The new changes in SecureBootVariableLib brought in a new dependency of
PlatformPKProtectionLib.

This change added the new library instance from SecurityPkg to resolve
pipeline builds.

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Rebecca Cran <rebecca@bsdio.com>
Cc: Peter Grehan <grehan@freebsd.org>
Cc: Sebastien Boeuf <sebastien.boeuf@intel.com>

Signed-off-by: Kun Qin <kuqin12@gmail.com>
Reviewed-by: Jiewen Yao <Jiewen.yao@intel.com>
Acked-by: Michael Kubacki <michael.kubacki@microsoft.com>
2022-07-07 01:07:00 +00:00
..
CloudHvDefines.fdf.inc OvmfPkg: CloudHv: Fix FW_BASE_ADDRESS 2022-06-03 10:51:26 +00:00
CloudHvElfHeader.fdf.inc OvmfPkg: Generate CloudHv as a PVH ELF binary 2022-03-04 02:41:57 +00:00
CloudHvX64.dsc OvmfPkg: Pipeline: Resolve SecureBootVariableLib dependency 2022-07-07 01:07:00 +00:00
CloudHvX64.fdf OvmfPkg: CloudHv: Fix FW_BASE_ADDRESS 2022-06-03 10:51:26 +00:00
README OvmfPkg: CloudHv: Add README 2022-03-04 02:41:57 +00:00

README

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CloudHv is a port of OVMF for the Cloud Hypervisor project.



The Cloud Hypervisor project

----------------------------



Cloud Hypervisor is a Virtual Machine Monitor that runs on top of KVM. The

project focuses on exclusively running modern, cloud workloads, on top of a

limited set of hardware architectures and platforms. Cloud workloads refers to

those that are usually run by customers inside a cloud provider. This means

modern operating systems with most I/O handled by paravirtualised devices

(i.e. virtio), no requirement for legacy devices, and 64-bit CPUs.



https://github.com/cloud-hypervisor/cloud-hypervisor



Design

------



Based on Cloud Hypervisor's motto to reduce the emulation as much as possible,

the project logically decided to support the PVH boot specification as the only

way of booting virtual machines. That includes both direct kernel boot and OVMF

firmware which must be generated as PVH ELF binaries.

PVH allows information like location of ACPI tables and location of guest RAM

ranges to be shared without the need of an extra emulated device like a CMOS.



Features

--------



* Serial console

* EFI shell

* virtio-pci



Build

-----



The way to build the CloudHv target is as follows:



OvmfPkg/build.sh -p OvmfPkg/CloudHv/CloudHvX64.dsc -a X64 -b DEBUG



Usage

-----



Assuming Cloud Hypervisor is already built, one can start a virtual machine as

follows:



./cloud-hypervisor \

    --cpus boot=1 \

    --memory size=1G \

    --kernel Build/CloudHvX64/DEBUG_GCC5/FV/CLOUDHV.fd \

    --disk path=/path/to/disk.raw



Releases

--------



In edk2-stable202202, CloudHv is generated as data-only binary.

Starting with edk2-stable202205, CloudHv is generated as a PVH ELF binary to

reduce the amount of emulation needed from Cloud Hypervisor.

For TDX, things are handled differently and PVH is not used, which is why the

firmware is always generated as a data-only binary.



+-------------------+----------------+

|                   |    CloudHv     |

+-------------------+----------------+

| edk2-stable202202 | Data binary    |

+-------------------+----------------+

| edk2-stable202205 | PVH ELF binary |

+-------------------+----------------+