MIPS: Don't build fast TLB refill handler with 32-bit kernels

The fast handler only supports 64-bit kernels.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Cc: James Hogan <james.hogan@imgtec.com>
Cc: kvm@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7010/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 6 insertions, 2 deletions

diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index f99ec587b151..af91f3ed1a82 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -1250,13 +1250,17 @@ static void build_r4000_tlb_refill_handler(void)
         unsigned int final_len;
         struct mips_huge_tlb_info htlb_info __maybe_unused;
         enum vmalloc64_mode vmalloc_mode __maybe_unused;
-
+#ifdef CONFIG_64BIT
+        bool is64bit = true;
+#else
+        bool is64bit = false;
+#endif
         memset(tlb_handler, 0, sizeof(tlb_handler));
         memset(labels, 0, sizeof(labels));
         memset(relocs, 0, sizeof(relocs));
         memset(final_handler, 0, sizeof(final_handler));
 
-        if ((scratch_reg >= 0 || scratchpad_available()) && use_bbit_insns()) {
+        if (is64bit && (scratch_reg >= 0 || scratchpad_available()) && use_bbit_insns()) {
                 htlb_info = build_fast_tlb_refill_handler(&p, &l, &r, K0, K1,
                                                           scratch_reg);
                 vmalloc_mode = refill_scratch;