Default qemu version is out of date

[BijieXu]

I build the qemu binaries from the "riscv-qemu" path, which generate qemu 4.1.1. when I use this qemu to load the image, it hang up at the output as following
[Penglai] Penglai Enclave Preparing

Then I found in the document that the qemu version should >= 5.2.0. Then I installed the required qemu and it worked ok.

In that case why not removing this "riscv-qemu" from the repo to avoid confusion? Or you can upgrade the qemu into the required one.

[Ddnirvana]

@Shang-QY @fengerhu1 Qingyu and Erhu, could you please help to check this issue and help Bijie to fix it?

[Fly0307]

Thanks for the suggestion! Currently we are using a newer version than 5.2.0, you can usually just use the latest version of qemu installed or compiled from the qemu website e.g. 8.0.5. We will also replace the version of qemu in the repository in the future.