On Fri, 2022-02-25 at 10:43 +0100, Gerd Hoffmann wrote: > On Thu, Feb 24, 2022 at 03:28:26PM +0100, > sebastien.bo...@intel.com wrote: > > From: Sebastien Boeuf <sebastien.bo...@intel.com> > > > > Add some documentation to the CloudHv target in order to clarify > > how to > > use it and what to expect from it. > > > > Signed-off-by: Sebastien Boeuf <sebastien.bo...@intel.com> > > --- > > OvmfPkg/CloudHv/README | 66 > > ++++++++++++++++++++++++++++++++++++++++++ > > 1 file changed, 66 insertions(+) > > create mode 100644 OvmfPkg/CloudHv/README > > > > diff --git a/OvmfPkg/CloudHv/README b/OvmfPkg/CloudHv/README > > new file mode 100644 > > index 0000000000..b5ef2a8be6 > > --- /dev/null > > +++ b/OvmfPkg/CloudHv/README > > @@ -0,0 +1,66 @@ > > + > > +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 | non-TDX | TDX | > > ++-------------------+----------------+-------------+ > > +| edk2-stable202202 | Data binary | Data binary | > > +| edk2-stable202205 | PVH ELF binary | Data binary | > > ++-------------------+----------------+-------------+ > > Hmm, but current edk2 code has no support for tdx, correct? > I'd suggest to drop the tdx references then.
Yes you're right. I'll remove it. > > take care, > Gerd > --------------------------------------------------------------------- Intel Corporation SAS (French simplified joint stock company) Registered headquarters: "Les Montalets"- 2, rue de Paris, 92196 Meudon Cedex, France Registration Number: 302 456 199 R.C.S. NANTERRE Capital: 4,572,000 Euros This e-mail and any attachments may contain confidential material for the sole use of the intended recipient(s). Any review or distribution by others is strictly prohibited. If you are not the intended recipient, please contact the sender and delete all copies. -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#87007): https://edk2.groups.io/g/devel/message/87007 Mute This Topic: https://groups.io/mt/89365717/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
