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I want to debug the virtualization code, such as "vlpi direct inject", but find that the performance of fvp is particularly poor after starting host and guest in the hyperlinked step below, which affects interaction. What should I do?

Mikhail Zhang

docs/infra/common/gicv4_1-vlpi-vsgi.rst · master · Arm Reference Solutions / arm-reference-solutions-docs · GitLab

Firstly, It takes about an hour and a half to start host, then a long time to start guest with kvmtool.

Secondly, It takes several hours to copy the linux kernel source code to host.

Thirdly, I want to make sure vmlinux is consistent with the source code, but I can't compile and install the kernel on host, it's too slow.

Is my operation wrong? Is there any way to improve the performance?

How can I debug virtualization code efficiently?