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[MIPS] R2: Instruction hazard barrier.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle 2006-04-05 09:45:45 +01:00
parent a682a24170
commit bce1a28686
1 changed files with 15 additions and 0 deletions
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15
arch/mips/kernel/entry.S
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@ -119,3 +119,18 @@ syscall_exit_work:
li a1, 1 li a1, 1
jal do_syscall_trace jal do_syscall_trace
b resume_userspace b resume_userspace
#if defined(CONFIG_CPU_MIPSR2) || defined(CONFIG_MIPS_MT)
/*
* MIPS32R2 Instruction Hazard Barrier - must be called
*
* For C code use the inline version named instruction_hazard().
*/
LEAF(mips_ihb)
.set mips32r2
jr.hb ra
nop
END(mips_ihb)
#endif /* CONFIG_CPU_MIPSR2 or CONFIG_MIPS_MT */