diff options
| author | Ralf Baechle <ralf@linux-mips.org> | 2007-03-20 14:56:50 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-03-24 18:01:49 +0100 |
| commit | 7605b3906192a171e651076325b1ed1d5ea57ec9 (patch) | |
| tree | a86d308b36fda5297349691089a868208a5a9688 /include/asm-mips/hazards.h | |
| parent | [MIPS] Make MIPS udelay() preempt safe under DEBUG_PREEMPT (diff) | |
| download | linux-7605b3906192a171e651076325b1ed1d5ea57ec9.tar.xz linux-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 '')
| -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 |