This is a note to let you know that I've just added the patch titled
MIPS: Require O32 FP64 support for MIPS64 with O32 compat
to the 4.1-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-require-o32-fp64-support-for-mips64-with-o32-compat.patch
and it can be found in the queue-4.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 4e9d324d4288b082497c30bc55b8ad13acc7cf01 Mon Sep 17 00:00:00 2001
From: Paul Burton <paul.burton@xxxxxxxxxx>
Date: Fri, 10 Jul 2015 16:00:24 +0100
Subject: MIPS: Require O32 FP64 support for MIPS64 with O32 compat
From: Paul Burton <paul.burton@xxxxxxxxxx>
commit 4e9d324d4288b082497c30bc55b8ad13acc7cf01 upstream.
MIPS32r6 code requires FP64 (ie. FR=1) support. Building a kernel with
support for MIPS32r6 binaries but without support for O32 with FP64 is
therefore a problem which can lead to incorrectly executed userland.
CONFIG_MIPS_O32_FP64_SUPPORT is already selected when the kernel is
configured for MIPS32r6, but not when the kernel is configured for
MIPS64r6 with O32 compat support. Select CONFIG_MIPS_O32_FP64_SUPPORT in
such configurations to prevent building kernels which execute MIPS32r6
userland incorrectly.
Signed-off-by: Paul Burton <paul.burton@xxxxxxxxxx>
Cc: Markos Chandras <markos.chandras@xxxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Cc: Matthew Fortune <matthew.fortune@xxxxxxxxxx>
Cc: linux-kernel@xxxxxxxxxxxxxxx
Patchwork: https://patchwork.linux-mips.org/patch/10674/
Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/mips/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1417,6 +1417,7 @@ config CPU_MIPS64_R6
select CPU_SUPPORTS_HIGHMEM
select CPU_SUPPORTS_MSA
select GENERIC_CSUM
+ select MIPS_O32_FP64_SUPPORT if MIPS32_O32
help
Choose this option to build a kernel for release 6 or later of the
MIPS64 architecture. New MIPS processors, starting with the Warrior
Patches currently in stable-queue which might be from paul.burton@xxxxxxxxxx are
queue-4.1/mips-kernel-cps-vec-replace-mips32r2-isa-level-with-mips64r2.patch
queue-4.1/mips-kernel-cps-vec-use-ta0-ta3-pseudo-registers-for-64-bit.patch
queue-4.1/revert-mips-kconfig-disable-smp-cps-for-64-bit.patch
queue-4.1/mips-require-o32-fp64-support-for-mips64-with-o32-compat.patch
queue-4.1/mips-fpu.h-allow-64-bit-fpu-on-a-64-bit-mips-r6-cpu.patch
queue-4.1/mips-kernel-cps-vec-replace-la-macro-with-ptr_la.patch
queue-4.1/mips-kernel-smp-cps-fix-64-bit-compatibility-errors-due-to-pointer-casting.patch
queue-4.1/mips-kernel-cps-vec-replace-kseg0-with-ckseg0.patch
queue-4.1/mips-cps-vec-use-macros-for-various-arithmetics-and-memory-operations.patch
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