Changeset 23 for trunk/kernel/mm/vmm.h

Timestamp:

Jun 18, 2017, 10:06:41 PM (7 years ago)

Author:

alain

Message:

Introduce syscalls.

File:

• trunk/kernel/mm/vmm.h (modified) (7 diffs)

trunk/kernel/mm/vmm.h

@@ -4 +4 @@
  * Authors   Ghassan Almaless (2008,2009,2010,2011, 2012)
  *           Mohamed Lamine Karaoui (2015)
- *           Alain Greiner (2016)
+ *           Alain Greiner (2016,2017)
  *
  * Copyright (c) UPMC Sorbonne Universites
@@ -103 +103 @@
         rwlock_t       vsegs_lock;         /*! lock protecting the vsegs list & radix tree      */
         list_entry_t   vsegs_root;         /*! all vsegs in same process and same cluster       */
-        uint32_t       vsegs_nr;           /*! total number of vsegs                            */
-
+        uint32_t       vsegs_nr;           /*! total number of local vsegs                      */
         grdxt_t        grdxt;              /*! embedded generic vsegs radix tree (key is vpn)   */
 
@@ -110 +109 @@
 
     stack_mgr_t    stack_mgr;          /*! embedded STACK vsegs allocator                   */
-
     mmap_mgr_t     mmap_mgr;           /*! embedded MMAP vsegs allocator                    */
 
@@ -158 +156 @@
 
 /*********************************************************************************************
+ * This function copies the content of a source VMM to a destination VMM.
+ *********************************************************************************************
+ * @ dst_process   : pointer on destination process descriptor.
+ * @ src_process   : pointer on source process descriptor.
+ * @ return 0 if success / return ENOMEM if failure.
+ ********************************************************************************************/
+error_t vmm_copy( struct process_s * dst_process,
+                  struct process_s * src_process );
+
+/*********************************************************************************************
  * This function removes all vsegs registered in in a virtual memory manager,
  * and releases the memory allocated to the local generic page table.
  *********************************************************************************************
- * @ vmm   : pointer on process descriptor.
+ * @ process   : pointer on process descriptor.
  ********************************************************************************************/
 void vmm_destroy( struct process_s * process );
@@ -265 +273 @@
 
 /*********************************************************************************************
- * This function is called by the architecture specific exception handler when a
- * page fault has been detected in a given cluster.
+ * This function is called by the generic exception handler when a page fault 
+ * has been detected in a given cluster. 
  * If the local cluster is not the reference cluster, it send a RPC_VMM_GET_PTE
  * to the reference cluster to get the missing PTE attributes and PPN, and update
@@ -305 +313 @@
  * This function makes the virtual to physical address translation, using the calling
  * process page table. It uses identity mapping if required by the ident flag.
- * This address translation is required to configure the devices
- * that have a DMA capability, or to implement the software L2/L3 cache cohérence,
- * using the MMC device synchronisation primitives.
- * WARNING : the <ident> value must be defined by the CONFIG_KERNEL_IDENT parameter.
+ * This address translation is required to configure the peripherals having a DMA
+ * capability, or to implement the software L2/L3 cache cohérence, using the MMC device 
+ * synchronisation primitives.
+ * WARNING : the <ident> value must be defined by the CONFIG_KERNEL_IDENTITY_MAP parameter.
  *********************************************************************************************
  * @ ident     : [in] uses identity mapping if true.
@@ -321 +329 @@
 
 /*********************************************************************************************
- * Pas a sa place ici [AG]
- ********************************************************************************************/
-int sys_mmap( mmap_attr_t * mattr );
-
-/*********************************************************************************************
  ********************************************************************************************/
 int sys_madvise( void    * start,