add feature: 4-level-ept (#25)

* add feature: 4-level-ept

* update rust-toolchain

* represent some dependencies using the crates.io version

Author: Josen-B

.github/workflows/ci.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust-toolchain: [nightly-2024-12-25, nightly]
+        rust-toolchain: [nightly-2025-05-20, nightly]
         targets: [x86_64-unknown-linux-gnu, x86_64-unknown-none, riscv64gc-unknown-none-elf, aarch64-unknown-none-softfloat]
     steps:
     - uses: actions/checkout@v4
@@ -45,7 +45,7 @@ jobs:
     - uses: actions/checkout@v4
     - uses: dtolnay/rust-toolchain@nightly
       with:
-        toolchain: nightly-2024-12-25
+        toolchain: nightly-2025-05-20
     - name: Build docs
       continue-on-error: ${{ github.ref != env.default-branch && github.event_name != 'pull_request' }}
       run: |

Cargo.toml

@@ -6,6 +6,7 @@ edition = "2024"
 [features]
 default = ["vmx"]
 vmx = []
+4-level-ept = ["arm_vcpu/4-level-ept"]   # TODO: Realize 4-level-ept on x86_64 and riscv64.
 
 [dependencies]
 log = "0.4"
@@ -22,19 +23,18 @@ page_table_multiarch = "0.5"
 percpu = { version = "0.2.0", features = ["arm-el2"] }
 
 # System dependent modules provided by ArceOS-Hypervisor.
-axvcpu = { git = "https://github.com/arceos-hypervisor/axvcpu.git" }
-axaddrspace = { git = "https://github.com/arceos-hypervisor/axaddrspace.git" }
+axvcpu = "0.1"
+axaddrspace = "0.1"
 axdevice = { git = "https://github.com/arceos-hypervisor/axdevice.git" }
-axdevice_base = { git = "https://github.com/arceos-hypervisor/axdevice_crates.git" }
-axvmconfig = { git = "https://github.com/arceos-hypervisor/axvmconfig.git", default-features = false }
+axdevice_base = "0.1"
+axvmconfig = { version = "0.1", default-features = false }
 
 [target.'cfg(target_arch = "x86_64")'.dependencies]
-x86_vcpu = { git = "https://github.com/arceos-hypervisor/x86_vcpu.git" }
+x86_vcpu = "0.1"
 
 [target.'cfg(target_arch = "riscv64")'.dependencies]
-riscv_vcpu = { git = "https://github.com/arceos-hypervisor/riscv_vcpu.git" }
+riscv_vcpu = "0.1"
 
 [target.'cfg(target_arch = "aarch64")'.dependencies]
-arm_vcpu = { git = "https://github.com/arceos-hypervisor/arm_vcpu.git" }
-arm_vgic = { git = "https://github.com/arceos-hypervisor/arm_vgic.git", features = ["vgicv3"] }
-
+arm_vcpu = "0.1"
+arm_vgic = { version = "0.1", features = ["vgicv3"] }