From: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
"linuxppc-dev@ozlabs.org" <linuxppc-dev@ozlabs.org>,
Rex Feany <RFeany@mrv.com>, Scott Wood <scottwood@freescale.com>
Subject: [PATCH 1/8] 8xx: invalidate non present TLBs
Date: Sun, 11 Oct 2009 18:35:05 +0200 [thread overview]
Message-ID: <1255278912-8042-2-git-send-email-Joakim.Tjernlund@transmode.se> (raw)
In-Reply-To: <1255278912-8042-1-git-send-email-Joakim.Tjernlund@transmode.se>
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.
---
arch/powerpc/mm/fault.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 7699394..72941c7 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -39,7 +39,7 @@
#include <asm/uaccess.h>
#include <asm/tlbflush.h>
#include <asm/siginfo.h>
-
+#include <mm/mmu_decl.h>
#ifdef CONFIG_KPROBES
static inline int notify_page_fault(struct pt_regs *regs)
@@ -243,6 +243,12 @@ good_area:
goto bad_area;
#endif /* CONFIG_6xx */
#if defined(CONFIG_8xx)
+ /* 8xx sometimes need to load a invalid/non-present TLBs.
+ * These must be invalidated separately as linux mm don't.
+ */
+ if (error_code & 0x40000000) /* no translation? */
+ _tlbil_va(address);
+
/* The MPC8xx seems to always set 0x80000000, which is
* "undefined". Of those that can be set, this is the only
* one which seems bad.
--
1.6.4.4
next prev parent reply other threads:[~2009-10-11 16:35 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-11 16:35 [PATCH 0/8] Fix 8xx MMU/TLB Joakim Tjernlund
2009-10-11 16:35 ` Joakim Tjernlund [this message]
2009-10-11 16:35 ` [PATCH 2/8] 8xx: Update TLB asm so it behaves as linux mm expects Joakim Tjernlund
2009-10-11 16:35 ` [PATCH 3/8] 8xx: Tag DAR with 0x00f0 to catch buggy instructions Joakim Tjernlund
2009-10-11 16:35 ` [PATCH 4/8] 8xx: Fixup DAR from buggy dcbX instructions Joakim Tjernlund
2009-10-11 16:35 ` [PATCH 5/8] 8xx: dcbst sets store bit in DTLB error, workaround Joakim Tjernlund
2009-10-11 16:35 ` [PATCH 6/8] 8xx: Add missing Guarded setting in DTLB Error Joakim Tjernlund
2009-10-11 16:35 ` [PATCH 7/8] 8xx: Restore _PAGE_WRITETHRU Joakim Tjernlund
2009-10-11 16:35 ` [PATCH 8/8] 8xx: start using dcbX instructions in various copy routines Joakim Tjernlund
2009-10-11 21:26 ` [PATCH 7/8] 8xx: Restore _PAGE_WRITETHRU Benjamin Herrenschmidt
2009-10-11 22:21 ` Joakim Tjernlund
2009-10-11 22:45 ` Benjamin Herrenschmidt
2009-10-11 21:25 ` [PATCH 6/8] 8xx: Add missing Guarded setting in DTLB Error Benjamin Herrenschmidt
2009-10-11 22:19 ` Joakim Tjernlund
2009-10-11 22:44 ` Benjamin Herrenschmidt
2009-10-12 5:36 ` Joakim Tjernlund
2009-10-12 5:46 ` Benjamin Herrenschmidt
2009-10-12 6:59 ` Joakim Tjernlund
2009-10-14 17:02 ` [PATCH 5/8] 8xx: dcbst sets store bit in DTLB error, workaround Scott Wood
2009-10-14 17:20 ` [PATCH 4/8] 8xx: Fixup DAR from buggy dcbX instructions Scott Wood
2009-10-14 19:05 ` Joakim Tjernlund
2009-10-14 19:23 ` Scott Wood
2009-10-14 20:03 ` Joakim Tjernlund
2009-10-14 20:22 ` Scott Wood
2009-10-14 21:10 ` Joakim Tjernlund
2009-10-14 21:14 ` Scott Wood
2009-10-14 21:17 ` Benjamin Herrenschmidt
2009-10-14 21:41 ` Joakim Tjernlund
2009-10-14 21:52 ` Benjamin Herrenschmidt
2009-10-14 22:09 ` Joakim Tjernlund
2009-10-11 21:25 ` [PATCH 2/8] 8xx: Update TLB asm so it behaves as linux mm expects Benjamin Herrenschmidt
2009-10-14 16:57 ` Scott Wood
2009-10-14 16:56 ` [PATCH 1/8] 8xx: invalidate non present TLBs Scott Wood
2009-10-14 17:23 ` [PATCH 0/8] Fix 8xx MMU/TLB Scott Wood
2009-10-14 18:46 ` Joakim Tjernlund
2009-10-15 9:04 Joakim Tjernlund
2009-10-15 9:04 ` [PATCH 1/8] 8xx: invalidate non present TLBs Joakim Tjernlund
2009-11-04 13:38 [PATCH 0/8] 8xx: Misc fixes for buggy insn Joakim Tjernlund
2009-11-04 13:38 ` [PATCH 1/8] 8xx: invalidate non present TLBs Joakim Tjernlund
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