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>
diff --git a/arch/arc/mm/tlb.c b/arch/arc/mm/tlb.c
index 7646a96..a4ad68c 100644
--- a/arch/arc/mm/tlb.c
+++ b/arch/arc/mm/tlb.c
@@ -688,25 +688,27 @@
* Low Level ASM TLB handler calls this if it finds that HW and SW ASIDS
* don't match
*/
-void print_asid_mismatch(int is_fast_path)
+void print_asid_mismatch(int mm_asid, int mmu_asid, int is_fast_path)
{
- int pid_sw, pid_hw;
- pid_sw = current->active_mm->context.asid;
- pid_hw = read_aux_reg(ARC_REG_PID) & 0xff;
-
pr_emerg("ASID Mismatch in %s Path Handler: sw-pid=0x%x hw-pid=0x%x\n",
- is_fast_path ? "Fast" : "Slow", pid_sw, pid_hw);
+ is_fast_path ? "Fast" : "Slow", mm_asid, mmu_asid);
__asm__ __volatile__("flag 1");
}
-void tlb_paranoid_check(unsigned int pid_sw, unsigned long addr)
+void tlb_paranoid_check(unsigned int mm_asid, unsigned long addr)
{
- unsigned int pid_hw;
+ unsigned int mmu_asid;
- pid_hw = read_aux_reg(ARC_REG_PID) & 0xff;
+ mmu_asid = read_aux_reg(ARC_REG_PID) & 0xff;
- if (addr < 0x70000000 && ((pid_hw != pid_sw) || (pid_sw == NO_ASID)))
- print_asid_mismatch(0);
+ /*
+ * At the time of a TLB miss/installation
+ * - HW version needs to match SW version
+ * - SW needs to have a valid ASID
+ */
+ if (addr < 0x70000000 &&
+ ((mmu_asid != mm_asid) || (mm_asid == NO_ASID)))
+ print_asid_mismatch(mm_asid, mmu_asid, 0);
}
#endif