Changeset d75628da in mainline

Timestamp:

2011-10-18T22:51:34Z (13 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

069b80d, 7bd2c19

Parents:

e5291e0

Message:

Set Interruption Vector Address register before any kernel C code can
generate a speculation exception.

Location:

kernel/arch/ia64/src

Files:

• ia64.c (modified) (1 diff)
• start.S (modified) (3 diffs)

kernel/arch/ia64/src/ia64.c

@@ -93 +93 @@
 void arch_pre_mm_init(void)
 {
-        /*
-         * Set Interruption Vector Address (i.e. location of interruption vector
-         * table).
-         */
-        iva_write((uintptr_t) &ivt);
-        srlz_d();
-        
 }
 

kernel/arch/ia64/src/start.S

@@ -156 +156 @@
          * Now we are paging.
          */
+
+        #
+        # Set Interruption Vector Address
+        # (i.e. location of interruption vector table)
+        #
+        movl r8 = ivt ;; 
+        mov cr.iva = r8
+        srlz.d ;;       
+
         
         # Switch to register bank 1
@@ -165 +174 @@
         mov ar.bspstore = r8
         loadrs
-        
-        #
-        # Initialize memory stack to some sane value and allocate a scratch are
+
+        #
+        # Initialize memory stack to some sane value and allocate a scratch area
         # on it.
         #
@@ -187 +196 @@
         srlz.i
         srlz.d ;;
-        
+
         br.call.sptk.many b0 = arch_pre_main
 0: