TMP commit to check /dev/kvm

Signed-off-by: Ludvig Liljenberg <[email protected]>

Author: ludfjig

.github/workflows/dep_rust.yml

@@ -96,6 +96,12 @@ jobs:
       - name: Verify MSRV
         run: ./dev/verify-msrv.sh hyperlight-host hyperlight-guest hyperlight-guest-bin hyperlight-common
 
+      - name: check kvm
+        run: ls -al /dev/kvm || true
+
+      - name: check groups
+        run: groups || true
+
       - name: Run Rust tests
         env:
           CARGO_TERM_COLOR: always

src/hyperlight_host/src/hypervisor/kvm.rs

@@ -48,22 +48,28 @@ use crate::{Result, log_then_return, new_error};
 /// Return `true` if the KVM API is available, version 12, and has UserMemory capability, or `false` otherwise
 #[instrument(skip_all, parent = Span::current(), level = "Trace")]
 pub(crate) fn is_hypervisor_present() -> bool {
-    if let Ok(kvm) = Kvm::new() {
-        let api_version = kvm.get_api_version();
-        match api_version {
-            version if version == 12 && kvm.check_extension(UserMemory) => true,
-            12 => {
-                log::info!("KVM does not have KVM_CAP_USER_MEMORY capability");
-                false
-            }
-            version => {
-                log::info!("KVM GET_API_VERSION returned {}, expected 12", version);
-                false
+    match Kvm::new() {
+        Ok(kvm) => {
+            let api_version = kvm.get_api_version();
+            match api_version {
+                version if version == 12 && kvm.check_extension(UserMemory) => true,
+                12 => {
+                    println!("KVM does not have KVM_CAP_USER_MEMORY capability");
+                    log::info!("KVM does not have KVM_CAP_USER_MEMORY capability");
+                    false
+                }
+                version => {
+                    println!("KVM GET_API_VERSION returned {}, expected 12", version);
+                    log::info!("KVM GET_API_VERSION returned {}, expected 12", version);
+                    false
+                }
             }
         }
-    } else {
-        log::info!("KVM is not available on this system");
-        false
+        Err(e) => {
+            log::info!("KVM is not available on this system: {:?}", e);
+            println!("KVM is not available on this system: {:?}", e);
+            false
+        }
     }
 }