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-rw-r--r--sys/vm/vm_kern.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/vm/vm_kern.c b/sys/vm/vm_kern.c
index 93676b2..826f5ae 100644
--- a/sys/vm/vm_kern.c
+++ b/sys/vm/vm_kern.c
@@ -119,7 +119,11 @@ kmem_alloc_pageable(map, size)
/*
* kmem_alloc_nofault:
*
- * Same as kmem_alloc_pageable, except that it create a nofault entry.
+ * Allocate a virtual address range with no underlying object and
+ * no initial mapping to physical memory. Any mapping from this
+ * range to physical memory must be explicitly created prior to
+ * its use, typically with pmap_qenter(). Any attempt to create
+ * a mapping on demand through vm_fault() will result in a panic.
*/
vm_offset_t
kmem_alloc_nofault(map, size)
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