cpuid: Add bits to support AMD specific topology handling

The handling is derived from the CPUID Specification to involde the AMD
specific leafs to configure the topology. The corresponding information
is passed from the VMM.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>

mshv-ioctls/src/ioctls/vcpu.rs

@@ -985,14 +985,23 @@ impl VcpuFd {
         let mut ret = Ok(());
 
         for entry in cpuid.as_slice().iter() {
-            let override_arg = None;
+            let mut override_arg = None;
             let mut subleaf_specific = None;
 
             match entry.function {
+                // Intel
                 // 0xb - Extended Topology Enumeration Leaf
                 // 0x1f - V2 Extended Topology Enumeration Leaf
-                0xb | 0x1f => {
+                // AMD
+                // 0x8000_001e - Processor Topology Information
+                // 0x8000_0026 - Extended CPU Topology
+                0xb | 0x1f | 0x8000_001e | 0x8000_0026 => {
                     subleaf_specific = Some(1);
+                    override_arg = None;
+                }
+                0x0000_0001 | 0x8000_0008 => {
+                    subleaf_specific = None;
+                    override_arg = Some(1);
                 }
                 _ => {}
             }