Adding test scenario for crash MSR updates

Signed-off-by: Gudaram, Meghana <meghana.gudaram@intel.com>

Author: mgudaram

src/migtd/Cargo.toml

@@ -80,6 +80,7 @@ vmcall-interrupt = []
 vmcall-vsock = ["vsock/vmcall-vsock"]
 vmcall-raw = ["vmcall_raw"]
 oneshot-apic = []
+test-crashmsr = []
 test_heap_size = ["td-benchmark", "td-payload/test_heap_size"]
 test_stack_size = ["td-benchmark"]
 test_disable_ra_and_accept_all = ["attestation/test", "tdx-tdcall-emu?/test_mock_report"] # Dangerous: can only be used for test purpose to bypass the remote attestation

src/migtd/src/bin/migtd/main.rs

@@ -18,6 +18,8 @@ use alloc::vec::Vec;
 use log::info;
 #[cfg(feature = "vmcall-raw")]
 use log::{debug, Level};
+#[cfg(all(feature = "test-crashmsr", feature = "vmcall-raw"))]
+use migtd::driver::vmcall_raw::panic_with_guest_crash_reg_report;
 use migtd::event_log::*;
 #[cfg(not(feature = "vmcall-raw"))]
 use migtd::migration::data::MigrationInformation;
@@ -130,6 +132,10 @@ pub fn runtime_main() {
         }
     }
 
+    // Test scenario for crash MSR updates
+    #[cfg(all(feature = "test-crashmsr", feature = "vmcall-raw"))]
+    panic_with_guest_crash_reg_report(0xFF, b"Test Crash MSR updates");
+
     // Handle the migration request from VMM
     handle_pre_mig();
 }