ARC: [ASID] Refactor the TLB paranoid debug code

-Asm code already has values of SW and HW ASID values, so they can be
 passed to the printing routine.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
此提交包含在:
Vineet Gupta
2013-08-23 17:37:18 +05:30
父節點 ade922f8e2
當前提交 5bd87adf9b
共有 3 個檔案被更改,包括 21 行新增21 行删除

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@@ -102,7 +102,7 @@ ex_saved_reg1:
; VERIFY if the ASID in MMU-PID Reg is same as
; one in Linux data structures
DBG_ASID_MISMATCH
tlb_paranoid_check_asm
.endm
.macro TLBMISS_RESTORE_REGS
@@ -133,34 +133,32 @@ ex_saved_reg1:
; In bizzare scenrios SW and HW ASID can get out-of-sync which is trouble.
; So we try to detect this in TLB Mis shandler
.macro DBG_ASID_MISMATCH
.macro tlb_paranoid_check_asm
#ifdef CONFIG_ARC_DBG_TLB_PARANOIA
; make sure h/w ASID is same as s/w ASID
GET_CURR_TASK_ON_CPU r3
ld r0, [r3, TASK_ACT_MM]
ld r0, [r0, MM_CTXT+MM_CTXT_ASID]
lr r1, [ARC_REG_PID]
and r1, r1, 0xFF
breq r1, r0, 5f
; Error if H/w and S/w ASID don't match, but NOT if in kernel mode
lr r0, [erstatus]
bbit0 r0, STATUS_U_BIT, 5f
lr r2, [erstatus]
bbit0 r2, STATUS_U_BIT, 5f
; We sure are in troubled waters, Flag the error, but to do so
; need to switch to kernel mode stack to call error routine
GET_TSK_STACK_BASE r3, sp
; Call printk to shoutout aloud
mov r0, 1
mov r2, 1
j print_asid_mismatch
5: ; ASIDs match so proceed normally
5: ; ASIDs match so proceed normally
nop
#endif