kernel: Print COCONUT_VERSION on panic

Add the version of COCONUT-SVSM to the panic message for easier
debugging.

Signed-off-by: Joerg Roedel <[email protected]>

Author: joergroedel

.github/workflows/rust.yml

@@ -119,6 +119,11 @@ jobs:
       - name: Touch libtcgtpm bindings
         run: echo "" > libtcgtpm/src/bindings.rs
 
+      # release/src/git_version.rs is auto-generated via a build.rs file. Touch
+      # it here to avoid CI failures.
+      - name: Touch release/src/git_version.rs
+        run: echo "" > release/src/git_version.rs
+
       - name: Format doctests
         uses: actions-rs/cargo@v1
         with:

kernel/src/stage2.rs

@@ -40,6 +40,8 @@ use svsm::platform::{
 use svsm::types::{PageSize, PAGE_SIZE, PAGE_SIZE_2M};
 use svsm::utils::{is_aligned, MemoryRegion};
 
+use release::COCONUT_VERSION;
+
 extern "C" {
     static mut pgtable: PageTable;
 }
@@ -476,7 +478,8 @@ pub extern "C" fn stage2_main(launch_info: &Stage2LaunchInfo) {
 
 #[panic_handler]
 fn panic(info: &PanicInfo<'_>) -> ! {
-    log::error!("Panic: {}", info);
+    log::error!("Panic! COCONUT-SVSM Version: {}", COCONUT_VERSION);
+    log::error!("Info: {}", info);
     loop {
         platform::halt();
     }

kernel/src/svsm.rs

@@ -53,6 +53,8 @@ use svsm::vtpm::vtpm_init;
 
 use svsm::mm::validate::{init_valid_bitmap_ptr, migrate_valid_bitmap};
 
+use release::COCONUT_VERSION;
+
 use alloc::string::String;
 
 extern "C" {
@@ -354,7 +356,12 @@ fn panic(info: &PanicInfo<'_>) -> ! {
     secrets_page_mut().clear_vmpck(2);
     secrets_page_mut().clear_vmpck(3);
 
-    log::error!("Panic: CPU[{}] {}", this_cpu().get_apic_id(), info);
+    log::error!(
+        "Panic on CPU[{}]! COCONUT-SVSM Version: {}",
+        this_cpu().get_apic_id(),
+        COCONUT_VERSION
+    );
+    log::error!("Info: {}", info);
 
     print_stack(3);