sh: Get the PGD right in oops case with 64-bit PTEs.

Previously this was using a static pgd shift in the reporting
code, simply flip this to PGDIR_SHIFT which does the right
thing depending on varying PTE magnitudes on the SH-X2 MMU.

While we're at it, and since it's been recently added, use
get_TTB() for fetching the TTB, rather than the open coded
instructions.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c
index 123fb80..cfeefc1 100644 (file)
--- a/arch/sh/mm/fault.c
+++ b/arch/sh/mm/fault.c
@@ -174,11 +174,9 @@ no_context:
                printk(KERN_ALERT "Unable to handle kernel paging request");
        printk(" at virtual address %08lx\n", address);
        printk(KERN_ALERT "pc = %08lx\n", regs->pc);
-       asm volatile("mov.l     %1, %0"
-                    : "=r" (page)
-                    : "m" (__m(MMU_TTB)));
+       page = (unsigned long)get_TTB();
        if (page) {
-               page = ((unsigned long *) page)[address >> 22];
+               page = ((unsigned long *) page)[address >> PGDIR_SHIFT];
                printk(KERN_ALERT "*pde = %08lx\n", page);
                if (page & _PAGE_PRESENT) {
                        page &= PAGE_MASK;