debug: finer-grained markers in usermode_bootstrap mmap section

src/syscall/process.rs

@@ -150,7 +150,7 @@ const KERNEL_METADATA_PAGE_COUNT: usize = syscall::KERNEL_METADATA_SIZE / PAGE_S
 pub unsafe fn usermode_bootstrap(bootstrap: &Bootstrap, token: &mut CleanLockToken) {
     info!("usermode_bootstrap: ENTER, page_count={}", bootstrap.page_count);
     assert_ne!(bootstrap.page_count, 0);
-    info!("usermode_bootstrap: page_count ok, mapping pages");
+    info!("usermode_bootstrap: page_count ok, getting addr_space");
 
     {
         let addr_space = Arc::clone(
@@ -159,6 +159,7 @@ pub unsafe fn usermode_bootstrap(bootstrap: &Bootstrap, token: &mut CleanLockTok
                 .addr_space()
                 .expect("expected bootstrap context to have an address space"),
         );
+        info!("usermode_bootstrap: got addr_space, calling mmap for {} pages", bootstrap.page_count);
 
         let base = Page::containing_address(VirtualAddress::new(PAGE_SIZE));
         let flags = MapFlags::MAP_FIXED_NOREPLACE
@@ -172,6 +173,7 @@ pub unsafe fn usermode_bootstrap(bootstrap: &Bootstrap, token: &mut CleanLockTok
         let _base_page = {
             let mut lock_token = token.token();
             let mut addr_space_lock = addr_space.acquire_write(lock_token.downgrade());
+            info!("usermode_bootstrap: acquired write lock, calling mmap");
             addr_space_lock
                 .mmap(
                     &addr_space,
@@ -192,6 +194,7 @@ pub unsafe fn usermode_bootstrap(bootstrap: &Bootstrap, token: &mut CleanLockTok
                 )
                 .expect("Failed to allocate bootstrap pages")
         };
+        info!("usermode_bootstrap: mmap done");
 
         // Insert kernel schemes root capabilities.
         let mut kernel_schemes_infos =