fix: propagate error for unsupported hypercall code

ZR233 · ZR233 · commit cfc19a0b584c · 2025-12-01T10:04:17.000+08:00
diff --git a/kernel/src/vmm/hvc.rs b/kernel/src/vmm/hvc.rs
@@ -141,7 +141,7 @@ impl HyperCall {
             }
             _ => {
                 warn!("Unsupported hypercall code: {:?}", self.code);
-                ax_err!(Unsupported)
+                ax_err!(Unsupported)?
             }
         }
     }

Original file line number	Diff line number	Diff line change
`@@ -141,7 +141,7 @@ impl HyperCall {`
`141`	`141`	`}`
`142`	`142`	`_ => {`
`143`	`143`	`warn!("Unsupported hypercall code: {:?}", self.code);`
`144`		`- ax_err!(Unsupported)`
	`144`	`+ ax_err!(Unsupported)?`
`145`	`145`	`}`
`146`	`146`	`}`
`147`	`147`	`}`