vm start failed for using CLOUDHV_EFI.fd in aarch64

[grass-lu]

Describe the bug
A clear and concise description of what the bug is.
vm using CLOUDHV_EFI.fd start failed in aarch64

the output ：
Synchronous Exception at 0x000000006BBFD5C4

Synchronous Exception at 0x000000006BBFD5C4

To Reproduce
Steps to reproduce the behaviour:
1、build uefi firmware ， according to this documentation: https://github.com/cloud-hypervisor/cloud-hypervisor/blob/main/docs/hotplug.md#pci-device-hot-plug.
2、start vm
the command line：
./cloud-hypervisor --kernel ./CLOUDHV_EFI.fd --disk path=focal-server-cloudimg-arm64.raw --cpus boot=4,max=16 --memory size=1024M,hotplug_size=8192M --net tap=,mac=,ip=192.168.10.2,mask=255.255.255.0 --cmdline console=ttyAMA0 root=/dev/vda1 rw --api-socket /tmp/ch-socket --serial tty --console off -vvv --log-file=/tmp/fw.log

3、the output
Synchronous Exception at 0x000000006BBFD5C4

Synchronous Exception at 0x000000006BBFD5C4
4、 the trace log
fw.log

Version

Output of cloud-hypervisor --version:
cloud-hypervisor v36.0.0

Did you build from source, if so build command line (e.g. features):

VM configuration

What command line did you run (or JSON config data):

Guest OS version details:

Host OS version details:

Logs

Output of cloud-hypervisor -v from either standard error or via --log-file:

Linux kernel output:

[grass-lu]

#5202

[michael2012z]

@jongwu Do you know the latest progress of the fix in the UEFI shim? And is there any workaround available?

[jongwu]

This bug has been fixed in UEFI shim side. But Ubuntu has not update UEFI shim that including the fix.
Currently, you can checkout to an earlier tag, eg, edk2-stable202211 to build edk2.

[weltling]

@jongwu, an accompanying question - there is currently 20220924 packaged on the OBS side http://download.opensuse.org/repositories/home:/cloud-hypervisor/ , guess that is still expected to work. Otherwise, would it be recommended to pull an updated EDK2 there, too?

Thanks

[jongwu]

@weltling -, As there is no big change for Edk2/CloudHv in the past one year, we can keep it for now, I think.

[weltling]

Got it, thanks for the recommendation, @jongwu!