Cleanup: Various comment and whitespace fixes.

Change-Id: I37c3e3346813efc595df651421b7e8ff4fbf3339
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2845
Reviewed-by: waddlesplash <[email protected]>

headers/private/kernel/arch/x86/arch_kernel.h

@@ -34,7 +34,7 @@
 // whole kernel address space is the top 512GB of the address space.
 #define KERNEL_BASE				0xffffff0000000000
 #define KERNEL_SIZE				0x10000000000
-#define KERNEL_TOP  			(KERNEL_BASE + (KERNEL_SIZE - 1))
+#define KERNEL_TOP				(KERNEL_BASE + (KERNEL_SIZE - 1))
 #define KERNEL_LOAD_BASE		0xffffffff80000000
 
 // Kernel physical memory map area.

headers/private/kernel/lock.h

@@ -154,12 +154,11 @@ extern void mutex_destroy(mutex* lock);
 extern void mutex_transfer_lock(mutex* lock, thread_id thread);
 extern status_t mutex_switch_lock(mutex* from, mutex* to);
 	// Unlocks "from" and locks "to" such that unlocking and starting to wait
-	// for the lock is atomically. I.e. if "from" guards the object "to" belongs
+	// for the lock is atomic. I.e. if "from" guards the object "to" belongs
 	// to, the operation is safe as long as "from" is held while destroying
 	// "to".
 extern status_t mutex_switch_from_read_lock(rw_lock* from, mutex* to);
-	// Like mutex_switch_lock(), just for a switching from a read-locked
-	// rw_lock.
+	// Like mutex_switch_lock(), just for switching from a read-locked rw_lock.
 
 
 // implementation private:

headers/private/system/vm_defs.h

@@ -17,7 +17,7 @@
 	(B_KERNEL_READ_AREA | B_KERNEL_WRITE_AREA | B_KERNEL_EXECUTE_AREA \
 	| B_KERNEL_STACK_AREA)
 
-// TODO: These aren't really a protection flags, but since the "protection"
+// TODO: These aren't really protection flags, but since the "protection"
 //	field is the only flag field, we currently use it for this.
 //	A cleaner approach would be appreciated - maybe just an official generic
 //	flags region in the protection field.