[test] Page mapping trace

src/arch/amd64/kernel.c

@@ -21,6 +21,7 @@ void kernel_main(void) {
     amd64_idt_init();
 
 #if defined(KERNEL_TEST_MODE)
+    kdebug("mm_kernel after basic init\n");
     mm_describe(mm_kernel);
 #endif
 

src/arch/amd64/mm/map.c

@@ -51,6 +51,9 @@ static int amd64_mm_map_single(mm_space_t pml4, uintptr_t virt_addr, uintptr_t p
         panic("map: entry already present\n");
     }
 
+#if defined(KERNEL_TEST_MODE)
+    kdebug("map %p -> %p\n", virt_addr, phys);
+#endif
     pt[pti] = (phys & ~0xFFF) | flags | 1;
     asm volatile("invlpg (%0)"::"a"(virt_addr):"memory");