Making mshv3 the default mshv hypervisor in hyperlight_host (instead of mshv2)

Signed-off-by: Mark Rossett <[email protected]>

Author: marosset

.github/workflows/Benchmarks.yml

@@ -57,7 +57,7 @@ jobs:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Run Benchmarks
-        run: just bench-ci main release ${{ matrix.hypervisor == 'mshv3' && 'mshv3' || ''}}
+        run: just bench-ci main release ${{ matrix.hypervisor == 'mshv' && 'mshv2' || ''}}
 
       - uses: actions/upload-artifact@v4
         with:

.github/workflows/dep_rust.yml

@@ -101,7 +101,7 @@ jobs:
           CARGO_TERM_COLOR: always
         run: |
           # with default features
-          just test ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv3' && 'mshv3' || ''}}
+          just test ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv' && 'mshv2' || ''}}
 
           # with only one driver enabled (driver mshv/kvm feature is ignored on windows) + seccomp 
           just test ${{ matrix.config }} seccomp,${{ matrix.hypervisor == 'mshv' && 'mshv2' || matrix.hypervisor == 'mshv3' && 'mshv3' || 'kvm' }} 
@@ -127,20 +127,20 @@ jobs:
         env:
           CARGO_TERM_COLOR: always
           RUST_LOG: debug
-        run: just run-rust-examples-linux ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv3' && 'mshv3' || ''}}
+        run: just run-rust-examples-linux ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv' && 'mshv2' || ''}}
 
       - name: Run Rust Gdb tests - linux
         if: runner.os == 'Linux'
         env:
           CARGO_TERM_COLOR: always
           RUST_LOG: debug
-        run: just test-rust-gdb-debugging ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv3' && 'mshv3' || ''}}
+        run: just test-rust-gdb-debugging ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv' && 'mshv2' || ''}}
 
       - name: Run Rust Crashdump tests
         env:
           CARGO_TERM_COLOR: always
           RUST_LOG: debug
-        run: just test-rust-crashdump ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv3' && 'mshv3' || ''}}
+        run: just test-rust-crashdump ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv' && 'mshv2' || ''}}
 
       - name: Download benchmarks from "latest"
         run: just bench-download ${{ runner.os }} ${{ matrix.hypervisor }} ${{ matrix.cpu}} dev-latest # compare to prerelease
@@ -151,5 +151,5 @@ jobs:
 
       - name: Run benchmarks
         run: |
-          just bench-ci main ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv3' && 'mshv3' || ''}}
+          just bench-ci main ${{ matrix.config }} ${{ matrix.hypervisor == 'mshv' && 'mshv2' || ''}}
         if: ${{ matrix.config == 'release' }}

src/hyperlight_host/Cargo.toml

@@ -118,7 +118,7 @@ cfg_aliases = "0.2.1"
 built = { version = "0.8.0", optional = true, features = ["chrono", "git2"] }
 
 [features]
-default = ["kvm", "mshv2", "seccomp", "build-metadata", "init-paging"]
+default = ["kvm", "mshv3", "seccomp", "build-metadata", "init-paging"]
 seccomp = ["dep:seccompiler"]
 function_call_metrics = []
 executable_heap = []
@@ -127,6 +127,7 @@ print_debug = []
 # Dumps the VM state to a file on unexpected errors or crashes. The path of the file will be printed on stdout and logged.
 crashdump = ["dep:chrono"]
 kvm = ["dep:kvm-bindings", "dep:kvm-ioctls"]
+# This feature is deprecated in favor of mshv3
 mshv2 = ["dep:mshv-bindings2", "dep:mshv-ioctls2"]
 mshv3 = ["dep:mshv-bindings3", "dep:mshv-ioctls3"]
 # This enables easy debug in the guest