Changeset 640 for trunk/kernel/syscalls/syscalls.h

Timestamp:

Oct 1, 2019, 1:19:00 PM (5 years ago)

Author:

alain

Message:

Remove all RPCs in page-fault handling.

File:

• trunk/kernel/syscalls/syscalls.h (modified) (1 diff)

trunk/kernel/syscalls/syscalls.h

@@ -187 +187 @@
 /****************************************************************************************** 
  * [11] This function remove an existing mapping defined by the <addr> and <size>
- * arguments in user space.
- ******************************************************************************************
+ * arguments in user space. This can modify the number of vsegs:
+ * (a) if the region is not entirely mapped in one existing vseg, it's an error.
+ * (b) if the region has same base and size as an existing vseg, the vseg is removed.
+ * (c) if the removed region cut the exiting vseg in two parts, it is resized.
+ * (d) if the removed region cut the vseg in three parts, it is modified, and a new
+ *     vseg is created with same type.
+ * All existing VSL copies are updated.
+******************************************************************************************
  * @ addr  : base address in user space.
- * # size  : number of bytes.
+ * @ size  : number of bytes.
  * @ return 0 if success / return -1 if failure.
  *****************************************************************************************/