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-rw-r--r--arch/mips/mm/tlbex.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index b5f228e7eae6..e3328a96e809 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -1872,8 +1872,16 @@ build_r4000_tlbchange_handler_head(u32 **p, struct uasm_label **l,
uasm_l_smp_pgtable_change(l, *p);
#endif
iPTE_LW(p, wr.r1, wr.r2); /* get even pte */
- if (!m4kc_tlbp_war())
+ if (!m4kc_tlbp_war()) {
build_tlb_probe_entry(p);
+ if (cpu_has_htw) {
+ /* race condition happens, leaving */
+ uasm_i_ehb(p);
+ uasm_i_mfc0(p, wr.r3, C0_INDEX);
+ uasm_il_bltz(p, r, wr.r3, label_leave);
+ uasm_i_nop(p);
+ }
+ }
return wr;
}