This is a note to let you know that I've just added the patch titled
MIPS: math-emu: Allow m{f,t}hc emulation on MIPS R6
to the 4.2-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:
mips-math-emu-allow-m-f-t-hc-emulation-on-mips-r6.patch
and it can be found in the queue-4.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From e8f80cc1a6d80587136b015e989a12827e1fcfe5 Mon Sep 17 00:00:00 2001
From: Markos Chandras <markos.chandras@xxxxxxxxxx>
Date: Fri, 17 Jul 2015 10:36:03 +0100
Subject: MIPS: math-emu: Allow m{f,t}hc emulation on MIPS R6
From: Markos Chandras <markos.chandras@xxxxxxxxxx>
commit e8f80cc1a6d80587136b015e989a12827e1fcfe5 upstream.
The mfhc/mthc instructions are supported on MIPS R6 so emulate
them if needed.
Signed-off-by: Markos Chandras <markos.chandras@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Patchwork: https://patchwork.linux-mips.org/patch/10737/
Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/mips/math-emu/cp1emu.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/arch/mips/math-emu/cp1emu.c
+++ b/arch/mips/math-emu/cp1emu.c
@@ -1137,7 +1137,7 @@ emul:
break;
case mfhc_op:
- if (!cpu_has_mips_r2)
+ if (!cpu_has_mips_r2_r6)
goto sigill;
/* copregister rd -> gpr[rt] */
@@ -1148,7 +1148,7 @@ emul:
break;
case mthc_op:
- if (!cpu_has_mips_r2)
+ if (!cpu_has_mips_r2_r6)
goto sigill;
/* copregister rd <- gpr[rt] */
Patches currently in stable-queue which might be from markos.chandras@xxxxxxxxxx are
queue-4.2/mips-math-emu-allow-m-f-t-hc-emulation-on-mips-r6.patch
queue-4.2/mips-cps-use-32b-accesses-to-gcrs.patch
queue-4.2/mips-math-emu-emulate-missing-bc1-eq-ne-z-instructions.patch
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