Adding new interface to update page permissions.. Interface only.

Added changes from review comments
Updated new enum for system call

Change-Id: I8a55b5e2f67427e59263eae31913e438ca782006
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/331
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>
Reviewed-by: Douglas R. Gilbert <dgilbert@us.ibm.com>
Reviewed-by: Melissa J. Connell <missyc@us.ibm.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/src/include/kernel/vmmmgr.H b/src/include/kernel/vmmmgr.H
index 2d0d0297d..ef8e6c362 100644
--- a/src/include/kernel/vmmmgr.H
+++ b/src/include/kernel/vmmmgr.H
@@ -118,6 +118,19 @@ class VmmManager
          */
         static int mmRemovePages(PAGE_REMOVAL_OPS i_op, void* i_vaddr,
                                  uint64_t i_size);
+        /**
+         * @brief Sets the permissions for a given page or range of pages
+         * @param i_va[in] - Virtual address of the page to update permission
+         * @param i_size[in] - range of memory that needs permissions updated...
+         *             if i_size equals 0 then we only need to update an 
+         *            individual page.
+         * @return int - 0 for successful permission update, non-zero otherwise
+         *
+         * The given virtual address will be 'rounded' down to the nearest page
+         * boundary, along with the given size will be 'rounded' up to the
+         * nearest divisible page size.
+         */
+        static int mmSetPermission(void* i_va,uint64_t i_size, PAGE_PERMISSIONS i_access_type);
 
     protected:
         VmmManager();
@@ -141,6 +154,9 @@ class VmmManager
         /** See findPhysicalAddress */
         uint64_t _findPhysicalAddress(uint64_t i_vaddr);
 
+        /* See mmSetPermission */
+        int _mmSetPermission(void* i_va,uint64_t i_size, PAGE_PERMISSIONS i_access_type);
+
     public:
         friend class Block;