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