diff options
Diffstat (limited to 'arch/arc/mm')
| -rw-r--r-- | arch/arc/mm/fault.c | 3 | ||||
| -rw-r--r-- | arch/arc/mm/tlbex.S | 14 |
2 files changed, 4 insertions, 13 deletions
diff --git a/arch/arc/mm/fault.c b/arch/arc/mm/fault.c index c0decc1f8d22..fdafeb1917cc 100644 --- a/arch/arc/mm/fault.c +++ b/arch/arc/mm/fault.c @@ -52,7 +52,7 @@ bad_area: return 1; } -void do_page_fault(struct pt_regs *regs, int write, unsigned long address, +void do_page_fault(struct pt_regs *regs, unsigned long address, unsigned long cause_code) { struct vm_area_struct *vma = NULL; @@ -60,6 +60,7 @@ void do_page_fault(struct pt_regs *regs, int write, unsigned long address, struct mm_struct *mm = tsk->mm; siginfo_t info; int fault, ret; + int write = cause_code & (1 << ECR_C_BIT_DTLB_ST_MISS); /* ST/EX */ unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE | (write ? FAULT_FLAG_WRITE : 0); diff --git a/arch/arc/mm/tlbex.S b/arch/arc/mm/tlbex.S index 7bf811d51af8..bd8bc90f61d3 100644 --- a/arch/arc/mm/tlbex.S +++ b/arch/arc/mm/tlbex.S @@ -381,18 +381,8 @@ do_slow_path_pf: ; ------- setup args for Linux Page fault Hanlder --------- mov_s r0, sp - lr r2, [efa] - lr r3, [ecr] - - ; Both st and ex imply WRITE access of some sort, hence do_page_fault( ) - ; invoked with write=1 for DTLB-st/ex Miss and write=0 for ITLB miss or - ; DTLB-ld Miss - ; DTLB Miss Cause code is ld = 0x01 , st = 0x02, ex = 0x03 - ; Following code uses that fact that st/ex have one bit in common - - btst_s r3, ECR_C_BIT_DTLB_ST_MISS - mov.z r1, 0 - mov.nz r1, 1 + lr r1, [efa] + lr r2, [ecr] ; We don't want exceptions to be disabled while the fault is handled. ; Now that we have saved the context we return from exception hence |