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avr32: Fix broken pte dump code in do_page_fault()

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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 <hskinnemoen@atmel.com>
This commit is contained in:
Haavard Skinnemoen 2008-02-13 12:32:34 +01:00
parent e48a411fa0
commit 32019828d9
1 changed files with 2 additions and 0 deletions
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2
arch/avr32/mm/fault.c
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@ -189,6 +189,8 @@ asmlinkage void do_page_fault(unsigned long ecr, struct pt_regs *regs)
page = sysreg_read(PTBR); page = sysreg_read(PTBR);
printk(KERN_ALERT "ptbr = %08lx", page); printk(KERN_ALERT "ptbr = %08lx", page);
if (address >= TASK_SIZE)
page = (unsigned long)swapper_pg_dir;
if (page) { if (page) {
page = ((unsigned long *)page)[address >> 22]; page = ((unsigned long *)page)[address >> 22];
printk(" pgd = %08lx", page); printk(" pgd = %08lx", page);