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authorPaul Burton <paul.burton@imgtec.com>2015-08-05 15:42:40 -0700
committerRalf Baechle <ralf@linux-mips.org>2015-12-22 12:16:32 +0100
commitf3575e230cf8537951ebe3cc19974c5db2ff4f1c (patch)
tree031bce32f822c102158e970075eec3e157e31fad
parentd6a428fb583738ad685c91a684748cdee7b2a05f (diff)
downloadlinux-stericsson-f3575e230cf8537951ebe3cc19974c5db2ff4f1c.tar.gz
MIPS: CPS: drop .set mips64r2 directives
Commit 977e043d5ea1 ("MIPS: kernel: cps-vec: Replace mips32r2 ISA level with mips64r2") leads to .set mips64r2 directives being present in 32 bit (ie. CONFIG_32BIT=y) kernels. This is incorrect & leads to MIPS64 instructions being emitted by the assembler when expanding pseudo-instructions. For example the "move" instruction can legitimately be expanded to a "daddu". This causes problems when the kernel is run on a MIPS32 CPU, as CONFIG_32BIT kernels of course often are... Fix this by dropping the .set <ISA> directives entirely now that Kconfig should be ensuring that kernels including this code are built with a suitable -march= compiler flag. Signed-off-by: Paul Burton <paul.burton@imgtec.com> Cc: Markos Chandras <markos.chandras@imgtec.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: <stable@vger.kernel.org> # 3.16+ Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/10869/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/kernel/cps-vec.S2
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/mips/kernel/cps-vec.S b/arch/mips/kernel/cps-vec.S
index 8fd5a276cad2..ac81edd44563 100644
--- a/arch/mips/kernel/cps-vec.S
+++ b/arch/mips/kernel/cps-vec.S
@@ -257,7 +257,6 @@ LEAF(mips_cps_core_init)
has_mt t0, 3f
.set push
- .set mips64r2
.set mt
/* Only allow 1 TC per VPE to execute... */
@@ -376,7 +375,6 @@ LEAF(mips_cps_boot_vpes)
nop
.set push
- .set mips64r2
.set mt
1: /* Enter VPE configuration state */