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| author | Ralf Baechle <ralf@linux-mips.org> | 2007-03-20 13:56:50 +0000 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-03-24 17:01:49 +0000 |
| commit | 7605b3906192a171e651076325b1ed1d5ea57ec9 (patch) | |
| tree | a86d308b36fda5297349691089a868208a5a9688 /include/asm-mips/hazards.h | |
| parent | 83598f1cb06101e972b1f5aaf3408eb729622fa8 (diff) | |
| download | lwn-7605b3906192a171e651076325b1ed1d5ea57ec9.tar.gz lwn-7605b3906192a171e651076325b1ed1d5ea57ec9.zip | |
[MIPS] Fix pipeline hazard.
In the the sequence:
ei
..
mfc0 $x, $status
the mfc0 may not see the SR_IE bit set. This was a deliberate bug in the
kernel code because we knew this was a safe thing to do on all R2 silicon
so far but new silicon is changing this.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'include/asm-mips/hazards.h')
| -rw-r--r-- | include/asm-mips/hazards.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-mips/hazards.h b/include/asm-mips/hazards.h index 50073157a617..e50c77e69cb5 100644 --- a/include/asm-mips/hazards.h +++ b/include/asm-mips/hazards.h @@ -52,6 +52,7 @@ ASMMACRO(tlb_probe_hazard, _ehb ) ASMMACRO(irq_enable_hazard, + _ehb ) ASMMACRO(irq_disable_hazard, _ehb |