[linux-yocto] [PATCH 5/9] MIPS donot build fast TLB refill handler with 32-bit kernels.
Chandrakala Chavva
cchavva.cavm at gmail.com
Fri Jan 23 09:53:10 PST 2015
From: Abhishek Paliwal <abhishek.paliwal at aricent.com>
From: David Daney <david.daney at cavium.com>
commit 35d0470668cca234e49ed35342b3f9a0eec8355c upstream
The fast handler only supports 64-bit kernels.
Signed-off-by: David Daney <david.daney at cavium.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann at caviumnetworks.com>
Cc: linux-mips at linux-mips.org
Cc: James Hogan <james.hogan at imgtec.com>
Cc: kvm at vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/7010/
Signed-off-by: Ralf Baechle <ralf at linux-mips.org>
Signed-off-by: Abhishek Paliwal <abhishek.paliwal at aricent.com>
---
arch/mips/mm/tlbex.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index aa24119..c05f2fd 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -1247,13 +1247,17 @@ 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;
--
1.8.1.4
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