[kernel] Move vm_space into kernel

The vm_space code should not have been in kutil, moving it to kernel.

modules.yaml

@@ -58,6 +58,7 @@ modules:
             - src/kernel/syscalls/system.cpp
             - src/kernel/syscalls/thread.cpp
             - src/kernel/task.s
+            - src/kernel/vm_space.cpp
             - src/kernel/crtn.s
 
     boot:
@@ -117,7 +118,6 @@ modules:
             - src/libraries/kutil/logger.cpp
             - src/libraries/kutil/memory.cpp
             - src/libraries/kutil/printf.c
-            - src/libraries/kutil/vm_space.cpp
 
 
     libc:

src/kernel/buffer_cache.cpp

@@ -1,10 +1,10 @@
 #include "kutil/assert.h"
-#include "kutil/vm_space.h"
 #include "kernel_memory.h"
 #include "page_manager.h"
 #include "buffer_cache.h"
+#include "vm_space.h"
 
-extern kutil::vm_space g_kernel_space;
+extern vm_space g_kernel_space;
 
 using memory::frame_size;
 using memory::kernel_stack_pages;

src/kernel/main.cpp

@@ -5,7 +5,6 @@
 
 #include "initrd/initrd.h"
 #include "kutil/assert.h"
-#include "kutil/vm_space.h"
 #include "apic.h"
 #include "block_device.h"
 #include "console.h"

src/kernel/memory_bootstrap.cpp

@@ -5,12 +5,12 @@
 #include "kutil/assert.h"
 #include "kutil/heap_allocator.h"
 #include "kutil/no_construct.h"
-#include "kutil/vm_space.h"
 
 #include "frame_allocator.h"
 #include "io.h"
 #include "log.h"
 #include "page_manager.h"
+#include "vm_space.h"
 
 using memory::frame_size;
 using memory::heap_start;
@@ -24,7 +24,7 @@ using memory::table_entries;
 
 using namespace kernel;
 
-kutil::vm_space g_kernel_space {kernel_offset, (heap_start-kernel_offset)};
+vm_space g_kernel_space {kernel_offset, (heap_start-kernel_offset)};
 
 
 // These objects are initialized _before_ global constructors are called,
@@ -54,7 +54,7 @@ void walk_page_table(
 	page_table::level level,
 	uintptr_t &current_start,
 	size_t &current_bytes,
-	kutil::vm_space &kspace)
+	vm_space &kspace)
 {
 	constexpr size_t huge_page_size = (1ull<<30);
 	constexpr size_t large_page_size = (1ull<<21);

src/kernel/page_manager.cpp

@@ -1,9 +1,9 @@
 #include "kutil/assert.h"
-#include "kutil/vm_space.h"
 #include "console.h"
 #include "io.h"
 #include "log.h"
 #include "page_manager.h"
+#include "vm_space.h"
 
 using memory::frame_size;
 using memory::heap_start;
@@ -333,12 +333,12 @@ page_manager::fault_handler(uintptr_t addr)
 	if (!addr)
 		return false;
 
-	extern kutil::vm_space g_kernel_space;
+	extern vm_space g_kernel_space;
 	bool is_heap = addr >= ::memory::heap_start &&
 		addr < ::memory::heap_start + ::memory::kernel_max_heap;
 
 	if (!is_heap &&
-		g_kernel_space.get(addr) != kutil::vm_state::committed)
+		g_kernel_space.get(addr) != vm_state::committed)
 		return false;
 
 	uintptr_t page = addr & ~0xfffull;

src/kernel/vm_space.cpp

@@ -1,9 +1,7 @@
 #include <algorithm>
-#include "kutil/logger.h"
 #include "kutil/vector.h"
-#include "kutil/vm_space.h"
+#include "log.h"
-
+#include "vm_space.h"
-namespace kutil {
 
 using node_type = kutil::avl_node<vm_range>;
 using node_vec = kutil::vector<node_type*>;
@@ -256,5 +254,3 @@ vm_space::get(uintptr_t addr)
 	node_type *node = find_overlapping(m_ranges.root(), addr, 1);
 	return node ? node->state : vm_state::unknown;
 }
-
-} // namespace kutil

src/kernel/vm_space.h

@@ -5,14 +5,11 @@
 #include <stdint.h>
 #include "kutil/avl_tree.h"
 
-namespace kutil {
-
 enum class vm_state : uint8_t {
 	unknown,
 	none,
 	reserved,
-	committed,
+	committed
-	mapped
 };
 
 struct vm_range
@@ -74,4 +71,3 @@ private:
 	tree_type m_ranges;
 };
 
-} // namespace kutil