[PATCH 03/13] 8xx: invalidate non present TLBs

[Joakim Tjernlund]

8xx sometimes need to load a invalid/non-present TLBs in
it DTLB asm handler.
These must be invalidated separaly as linux mm don't.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund at transmode.se>
---
 arch/ppc/mm/fault.c |    8 +++++++-
 1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/arch/ppc/mm/fault.c b/arch/ppc/mm/fault.c
index 9d3ce2d..874005a 100644
--- a/arch/ppc/mm/fault.c
+++ b/arch/ppc/mm/fault.c
@@ -116,7 +116,13 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
 	else
 		is_write = error_code & 0x02000000;
 #endif /* CONFIG_4xx || CONFIG_BOOKE */
-
+#if defined(CONFIG_8xx)
+	/* 8xx does no invalidate TLBs that are ~PRESENT,
+	 * do it here.
+	 */
+	if (error_code & 0x40000000)
+		_tlbie(address);
+#endif
 #if defined(CONFIG_XMON) || defined(CONFIG_KGDB)
 	if (debugger_fault_handler && regs->trap == 0x300) {
 		debugger_fault_handler(regs);
-- 
1.7.3.4