[PATCH 1/6] 8xx: DTLB Error must check for more errors.
From: Joakim Tjernlund <hidden>
Date: 2009-10-07 20:46:12
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
DataTLBError currently does:
if ((err & 0x02000000) == 0)
DSI();
This won't handle a store with no valid translation.
Change this to
if ((err & 0x48000000) != 0)
DSI();
that is, branch to DSI if either !permission or
!translation.
---
arch/powerpc/kernel/head_8xx.S | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S
index 52ff8c5..118bb05 100644
--- a/arch/powerpc/kernel/head_8xx.S
+++ b/arch/powerpc/kernel/head_8xx.S@@ -472,8 +472,8 @@ DataTLBError: /* First, make sure this was a store operation. */ mfspr r10, SPRN_DSISR - andis. r11, r10, 0x0200 /* If set, indicates store op */ - beq 2f + andis. r11, r10, 0x4800 /* no translation, no permission. */ + bne 2f /* branch if either is set */ /* The EA of a data TLB miss is automatically stored in the MD_EPN * register. The EA of a data TLB error is automatically stored in
--
1.6.4.4