Changeset 5f0f29ce in mainline for kernel/arch/ia32/src

Timestamp:

2009-02-26T23:34:27Z (16 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

e49e234

Parents:

6b1de7a

Message:

kernel memory management revisited (phase 1): proper support for zone flags

• the zone_t structures are now statically allocated to be easily available
• the locking scheme was simplified
• new flags for non-available zones were introduced
• FRAME_LOW_4_GiB flag is removed, the functionality will be eventually reimplemented using a generic mechanism

Location:

kernel/arch/ia32/src

Files:

• mm/frame.c (modified) (1 diff)
• smp/smp.c (modified) (1 diff)

kernel/arch/ia32/src/mm/frame.c

@@ -58 +58 @@
         pfn_t start, conf;
         size_t size;
-
+        
         for (i = 0; i < e820counter; i++) {
                 if (e820table[i].type == MEMMAP_MEMORY_AVAILABLE) {

kernel/arch/ia32/src/smp/smp.c

@@ -155 +155 @@
                  * Prepare new GDT for CPU in question.
                  */
+                
+                /* XXX Flag FRAME_LOW_4_GiB was removed temporarily,
+                 * it needs to be replaced by a generic fuctionality of
+                 * the memory subsystem
+                 */
                 gdt_new = (struct descriptor *) malloc(GDT_ITEMS *
-                    sizeof(struct descriptor), FRAME_ATOMIC | FRAME_LOW_4_GiB);
+                    sizeof(struct descriptor), FRAME_ATOMIC);
                 if (!gdt_new)
                         panic("Cannot allocate memory for GDT.");