avr32: Fix broken pte dump code in do_page_fault()

The per-task page tables only cover the first 2GiB of the address space. For kernel addresses, we need to do the lookup in init's page tables. This is a temporary workaround until we modify the per-task page tables to cover the whole 4GiB address space. Signed-off-by: Haavard Skinnemoen <[email protected]>
LoveHeat · Feb 13, 2008 · 3201982 · 3201982
1 parent e48a411
commit 3201982
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c
@@ -189,6 +189,8 @@ asmlinkage void do_page_fault(unsigned long ecr, struct pt_regs *regs)
 
 	page = sysreg_read(PTBR);
 	printk(KERN_ALERT "ptbr = %08lx", page);
+	if (address >= TASK_SIZE)
+		page = (unsigned long)swapper_pg_dir;
 	if (page) {
 		page = ((unsigned long *)page)[address >> 22];
 		printk(" pgd = %08lx", page);