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.tjernl...@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
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