From 448cf32233851b36e1d5f6004ee248573d2cc6ff Mon Sep 17 00:00:00 2001
From: Richard Braun <rbraun@sceen.net>
Date: Tue, 18 Dec 2012 21:41:52 +0100
Subject: vm/vm_map: VM map creation

---
 vm/vm_map.c | 21 ++++++++++++++++++++-
 vm/vm_map.h |  5 +++++
 2 files changed, 25 insertions(+), 1 deletion(-)

diff --git a/vm/vm_map.c b/vm/vm_map.c
index a29849ff..814a8760 100644
--- a/vm/vm_map.c
+++ b/vm/vm_map.c
@@ -118,9 +118,10 @@ static size_t vm_map_kentry_slab_size;
 static struct kmem_cache vm_map_kentry_cache;
 
 /*
- * Cache for normal map entries.
+ * Caches for normal map entries and maps.
  */
 static struct kmem_cache vm_map_entry_cache;
+static struct kmem_cache vm_map_cache;
 
 static struct vm_map_kentry_slab *
 vm_map_kentry_alloc_slab(void)
@@ -935,6 +936,24 @@ vm_map_setup(void)
 
     kmem_cache_init(&vm_map_entry_cache, "vm_map_entry",
                     sizeof(struct vm_map_entry), 0, NULL, NULL, NULL, 0);
+    kmem_cache_init(&vm_map_cache, "vm_map", sizeof(struct vm_map),
+                    0, NULL, NULL, NULL, 0);
+}
+
+int
+vm_map_create(struct vm_map **mapp)
+{
+    struct vm_map *map;
+
+    map = kmem_cache_alloc(&vm_map_cache);
+
+    if (map == NULL)
+        return ERROR_NOMEM;
+
+    /* TODO Create pmap */
+    vm_map_init(map, NULL, VM_MIN_ADDRESS, VM_MAX_ADDRESS);
+    *mapp = map;
+    return 0;
 }
 
 void
diff --git a/vm/vm_map.h b/vm/vm_map.h
index fdd24f5a..5b4edbcf 100644
--- a/vm/vm_map.h
+++ b/vm/vm_map.h
@@ -121,6 +121,11 @@ void vm_map_remove(struct vm_map *map, unsigned long start, unsigned long end);
  */
 void vm_map_setup(void);
 
+/*
+ * Create a VM map.
+ */
+int vm_map_create(struct vm_map **mapp);
+
 /*
  * Display information about a memory map.
  */
-- 
cgit v1.2.3