[yydawx]

Two commits adding Asterinas guest support on x86_64 QEMU:

• Multiboot2 boot protocol: mb2_boot.S real→protected mode trampoline, VMCS multiboot register setup, kernel-side Multiboot2 info construction (memory map + cmdline + module tags) in boot.rs
• GS/FS MSR passthrough: guest wrgsbase/wrfsbase support in trap.rs
• Zone0 config: adjusted reserved memory for zone1 coexistence, updated kernel cmdline

Related hvisor-tool changes (load raw cmdline, initramfs sizing) are in this repo's hvisor-tool/ and will follow as a separate PR against the tooling repository.

[Solicey]

This pr failed the linter test, you can run cargo fmt for detailed diff.

[yydawx]

This pr failed the linter test, you can run cargo fmt for detailed diff.

solved.But why the ci is not available

[Solicey]

It seems that this pr failed some x86_64 ci tests. We have set two build-only tests for platform nuc14mnk and ecx-2300f-peg, which you only have to pass compilation. But for qemu, we also setup tests to run zone0 Linux and zone1 Linux. You can refer to configs in Jenkins for more information, and feel free to ask for help if you encounter any questions solving this issue.

[Solicey]

Currently qemu x86_64 ci test server is not available, and we have to merge hvisor-tool pr before we could pass this ci test. I will inform you when the server is ready.