This is a note to let you know that I've just added the patch titled
powerpc/tm: Make room for hypervisor in abort cause codes
to the 3.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-tm-make-room-for-hypervisor-in-abort-cause-codes.patch
and it can be found in the queue-3.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 35f7097fcedec63fcba1852dbee96f74a2d90878 Mon Sep 17 00:00:00 2001
From: Michael Neuling <mikey@xxxxxxxxxxx>
Date: Sun, 26 May 2013 18:09:37 +0000
Subject: powerpc/tm: Make room for hypervisor in abort cause codes
From: Michael Neuling <mikey@xxxxxxxxxxx>
commit 35f7097fcedec63fcba1852dbee96f74a2d90878 upstream.
PAPR carves out 0xff-0xe0 for hypervisor use of transactional memory software
abort cause codes. Unfortunately we don't respect this currently.
Below fixes this to move our cause codes to below this region.
Signed-off-by: Michael Neuling <mikey@xxxxxxxxxxx>
Signed-off-by: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/reg.h | 15 ++++++++-------
1 file changed, 8 insertions(+), 7 deletions(-)
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -113,14 +113,15 @@
/* Reason codes describing kernel causes for transaction aborts. By
convention, bit0 is copied to TEXASR[56] (IBM bit 7) which is set if
- the failure is persistent.
+ the failure is persistent. PAPR saves 0xff-0xe0 for the hypervisor.
*/
-#define TM_CAUSE_RESCHED 0xfe
-#define TM_CAUSE_TLBI 0xfc
-#define TM_CAUSE_FAC_UNAV 0xfa
-#define TM_CAUSE_SYSCALL 0xf9 /* Persistent */
-#define TM_CAUSE_MISC 0xf6
-#define TM_CAUSE_SIGNAL 0xf4
+#define TM_CAUSE_PERSISTENT 0x01
+#define TM_CAUSE_RESCHED 0xde
+#define TM_CAUSE_TLBI 0xdc
+#define TM_CAUSE_FAC_UNAV 0xda
+#define TM_CAUSE_SYSCALL 0xd8 /* future use */
+#define TM_CAUSE_MISC 0xd6 /* future use */
+#define TM_CAUSE_SIGNAL 0xd4
#if defined(CONFIG_PPC_BOOK3S_64)
#define MSR_64BIT MSR_SF
Patches currently in stable-queue which might be from mikey@xxxxxxxxxxx are
queue-3.9/powerpc-tm-abort-on-emulation-and-alignment-faults.patch
queue-3.9/powerpc-tm-fix-userspace-stack-corruption-on-signal-delivery-for-active-transactions.patch
queue-3.9/powerpc-tm-update-cause-codes-documentation.patch
queue-3.9/powerpc-tm-make-room-for-hypervisor-in-abort-cause-codes.patch
queue-3.9/powerpc-tm-move-tm-abort-cause-codes-to-uapi.patch
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