aarch64: use 64k aligned addresses in tests

If we're on an AArch64 host that has been configured to use 64k
pages, then we need to align our addresses to that larger granule.

Signed-off-by: Andrew Jones <[email protected]>

Author: Andrew Jones

src/ioctls/vm.rs

@@ -87,8 +87,8 @@ impl VmFd {
     /// let vm = kvm.create_vm().unwrap();
     /// let mem_region = kvm_userspace_memory_region {
     ///                     slot: 0,
-    ///                     guest_phys_addr: 0x1000 as u64,
-    ///                     memory_size: 0x4000 as u64,
+    ///                     guest_phys_addr: 0x10000 as u64,
+    ///                     memory_size: 0x10000 as u64,
     ///                     userspace_addr: 0x0 as u64,
     ///                     flags: 0,
     ///                 };