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| author | Leonid Yegoshin | 2014-07-15 15:09:56 +0200 |
|---|---|---|
| committer | Ralf Baechle | 2014-08-02 00:06:39 +0200 |
| commit | 5890f70f15c52d0204a578422f8da828a0ba1096 (patch) | |
| tree | 433c553c87e4e9150fdffbbc8d8026f747e21f5f /arch/mips/kernel/traps.c | |
| parent | MIPS: Add new option for unique RI/XI exceptions (diff) | |
| download | kernel-qcow2-linux-5890f70f15c52d0204a578422f8da828a0ba1096.tar.gz kernel-qcow2-linux-5890f70f15c52d0204a578422f8da828a0ba1096.tar.xz kernel-qcow2-linux-5890f70f15c52d0204a578422f8da828a0ba1096.zip | |
MIPS: Use dedicated exception handler if CPU supports RI/XI exceptions
Use the regular tlb_do_page_fault_0 (no write) handler to handle
the RI and XI exceptions. Also skip the RI/XI validation check
on TLB load handler since it's redundant when the CPU has
unique RI/XI exceptions.
Singed-off-by: Leonid Yegoshin <Leonid.Yegoshin@imgtec.com>
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7339/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/kernel/traps.c')
| -rw-r--r-- | arch/mips/kernel/traps.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c index 51706d6dd5b0..1a328b1e288b 100644 --- a/arch/mips/kernel/traps.c +++ b/arch/mips/kernel/traps.c @@ -90,6 +90,7 @@ extern asmlinkage void handle_mt(void); extern asmlinkage void handle_dsp(void); extern asmlinkage void handle_mcheck(void); extern asmlinkage void handle_reserved(void); +extern void tlb_do_page_fault_0(void); void (*board_be_init)(void); int (*board_be_handler)(struct pt_regs *regs, int is_fixup); @@ -2114,6 +2115,12 @@ void __init trap_init(void) set_except_vector(15, handle_fpe); set_except_vector(16, handle_ftlb); + + if (cpu_has_rixiex) { + set_except_vector(19, tlb_do_page_fault_0); + set_except_vector(20, tlb_do_page_fault_0); + } + set_except_vector(21, handle_msa); set_except_vector(22, handle_mdmx); |