From bce1a28686ed6527977a198f698278b67c6bf9ec Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Wed, 5 Apr 2006 09:45:45 +0100 Subject: [PATCH] [MIPS] R2: Instruction hazard barrier. Signed-off-by: Ralf Baechle --- arch/mips/kernel/entry.S | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/arch/mips/kernel/entry.S b/arch/mips/kernel/entry.S index 371571f4f280..b1939a486d2c 100644 --- a/arch/mips/kernel/entry.S +++ b/arch/mips/kernel/entry.S @@ -119,3 +119,18 @@ syscall_exit_work: li a1, 1 jal do_syscall_trace 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 */