diff options
Diffstat (limited to 'arch/arc/kernel/entry.S')
| -rw-r--r-- | arch/arc/kernel/entry.S | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index 53655bf..b4a9614 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -321,7 +321,10 @@ ARC_ENTRY EV_MachineCheck lr r1, [efa] mov r2, sp - brne r0, 0x200100, 1f + lsr r3, r0, 8 + bmsk r3, r3, 7 + brne r3, ECR_C_MCHK_DUP_TLB, 1f + bl do_tlb_overlap_fault b ret_from_exception @@ -368,11 +371,11 @@ ARC_ENTRY EV_TLBProtV ;------ (5) Type of Protection Violation? ---------- ; ; ProtV Hardware Exception is triggered for Access Faults of 2 types - ; -Access Violaton (WRITE to READ ONLY Page) - for linux COW - ; -Unaligned Access (READ/WRITE on odd boundary) + ; -Access Violaton : 00_23_(00|01|02|03)_00 + ; x r w r+w + ; -Unaligned Access : 00_23_04_00 ; - cmp r2, 0x230400 ; Misaligned data access ? - beq 4f + bbit1 r2, ECR_C_BIT_PROTV_MISALIG_DATA, 4f ;========= (6a) Access Violation Processing ======== mov r0, sp ; pt_regs @@ -542,7 +545,7 @@ ARC_ENTRY EV_Trap ;------- (4) What caused the Trap -------------- lr r12, [ecr] - and.f 0, r12, ECR_PARAM_MASK + bmsk.f 0, r12, 7 bnz trap_with_param ; ======= (5a) Trap is due to System Call ======== |
