diff options
author | Ralf Baechle <ralf@linux-mips.org> | 2007-03-20 09:56:50 -0400 |
---|---|---|
committer | Ralf Baechle <ralf@linux-mips.org> | 2007-03-24 13:01:49 -0400 |
commit | 7605b3906192a171e651076325b1ed1d5ea57ec9 (patch) | |
tree | a86d308b36fda5297349691089a868208a5a9688 | |
parent | 83598f1cb06101e972b1f5aaf3408eb729622fa8 (diff) |
[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>
-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, | |||
52 | _ehb | 52 | _ehb |
53 | ) | 53 | ) |
54 | ASMMACRO(irq_enable_hazard, | 54 | ASMMACRO(irq_enable_hazard, |
55 | _ehb | ||
55 | ) | 56 | ) |
56 | ASMMACRO(irq_disable_hazard, | 57 | ASMMACRO(irq_disable_hazard, |
57 | _ehb | 58 | _ehb |