mshv-ioctls: enable FP & AdvSIMD for arm64 guests

Without this guest userspace is dysfunctional (random segfaults) since
userspace is generally compiled with FP/SIMD enabled.

Signed-off-by: Anirudh Rayabharam <[email protected]>

Author: anirudhrb

mshv-ioctls/src/ioctls/system.rs

@@ -103,6 +103,11 @@ fn make_partition_create_arg(vm_type: VmType) -> mshv_create_partition_v2 {
     unsafe {
         // This must always be enabled for ARM64 guests.
         proc_features.__bindgen_anon_1.set_gic_v3v4(0u64);
+
+        proc_features.__bindgen_anon_1.set_fp(0);
+        proc_features.__bindgen_anon_1.set_fp_hp(0);
+        proc_features.__bindgen_anon_1.set_adv_simd(0);
+        proc_features.__bindgen_anon_1.set_adv_simd_hp(0);
     }
 
     // SAFETY: access union fields