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| author | Ralf Baechle <ralf@linux-mips.org> | 2006-04-05 09:45:45 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2006-04-19 04:14:22 +0200 |
| commit | bce1a28686ed6527977a198f698278b67c6bf9ec (patch) | |
| tree | 814c2a32011c8f7279fb3244cf6215e1dd82a95d /arch | |
| parent | a682a2417007ad6265cd71b97b751753fd10e2fb (diff) | |
| download | linux-bce1a28686ed6527977a198f698278b67c6bf9ec.tar.gz linux-bce1a28686ed6527977a198f698278b67c6bf9ec.tar.bz2 linux-bce1a28686ed6527977a198f698278b67c6bf9ec.zip | |
[MIPS] R2: Instruction hazard barrier.
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/mips/kernel/entry.S | 15 |
1 files changed, 15 insertions, 0 deletions
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 */ |