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, 17 insertions, 1 deletions

diff --git a/src/kernel/syscall.C b/src/kernel/syscall.C
index 0e3395d9e..ecfdd9b1b 100644
--- a/src/kernel/syscall.C
+++ b/src/kernel/syscall.C
@@ -82,6 +82,8 @@ namespace Systemcalls
     void CpuDDLevel(task_t *t);
     void MmAllocBlock(task_t *t);
     void MmRemovePages(task_t *t);
+    void MmSetPermission(task_t *t);
+
 
     syscall syscalls[] =
     {
@@ -116,7 +118,8 @@ namespace Systemcalls
 
         &MmAllocBlock, // MM_ALLOC_BLOCK
         &MmRemovePages, // MM_REMOVE_PAGES
-	};
+        &MmSetPermission, // MM_SET_PERMISSION
+        };
 };
 
 extern "C"
@@ -520,4 +523,17 @@ namespace Systemcalls
         TASK_SETRTN(t, VmmManager::mmRemovePages(oper,vaddr,size));
     }
 
+     /**
+     * Set the Permissions on a block containing the virtual address passed in.
+     * @param[in] t: The task used to set Page Permissions for a given block
+     */
+    void MmSetPermission(task_t* t)
+    {   
+        void* va = (void*)TASK_GETARG0(t);
+        uint64_t size = (uint64_t)TASK_GETARG1(t);
+        PAGE_PERMISSIONS access_type = (PAGE_PERMISSIONS)TASK_GETARG2(t);
+        
+        TASK_SETRTN(t, VmmManager::mmSetPermission(va,size, access_type));
+    }
+    
 };