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authorZhang Le <r0bertz@gentoo.org>2009-04-15 17:01:52 +0800
committerRalf Baechle <ralf@linux-mips.org>2009-05-14 13:50:26 +0100
commit5d57c31e5790d44905af0459a21086dbad167d26 (patch)
treed834becb495bdba4d59d5ae46e96f566586b54cd /arch
parent6cec2a0ac57d2ebef495a46d7866ae86e8d0e508 (diff)
downloadlinux-5d57c31e5790d44905af0459a21086dbad167d26.tar.bz2
MIPS: Loongson 2 needs no hazard barriers.
Quoting from Loongson2FUserGuide.pdf: 5.22.1 Hazards The processor detects most of the pipeline hazards in hardware, including CP0 hazards and load hazards. No NOP instructions are required to correct instruction sequences. Signed-off-by: Zhang Le <r0bertz@gentoo.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/include/asm/hazards.h5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/mips/include/asm/hazards.h b/arch/mips/include/asm/hazards.h
index a12d971db4f9..0eaf77ffbc4f 100644
--- a/arch/mips/include/asm/hazards.h
+++ b/arch/mips/include/asm/hazards.h
@@ -138,8 +138,9 @@ do { \
__instruction_hazard(); \
} while (0)
-#elif defined(CONFIG_CPU_R10000) || defined(CONFIG_CPU_CAVIUM_OCTEON) || \
- defined(CONFIG_CPU_R5500) || defined(CONFIG_MACH_ALCHEMY)
+#elif defined(CONFIG_MACH_ALCHEMY) || defined(CONFIG_CPU_CAVIUM_OCTEON) || \
+ defined(CONFIG_CPU_LOONGSON2) || defined(CONFIG_CPU_R10000) || \
+ defined(CONFIG_CPU_R5500)
/*
* R10000 rocks - all hazards handled in hardware, so this becomes a nobrainer.