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authorVineet Gupta <vgupta@synopsys.com>2015-11-17 10:10:29 +0530
committerVineet Gupta <vgupta@synopsys.com>2019-10-28 12:12:32 -0700
commitad4c40e937f6d6a08a579c4a78206039618426b7 (patch)
tree6aa267dceb8b36bde0b36433539d0766305b210b /arch/arc/include
parentf4e2f7cc6999943e0a649cbc4618428181aad58f (diff)
downloadlinux-ad4c40e937f6d6a08a579c4a78206039618426b7.tar.gz
ARC: mm: tlb flush optim: Make TLBWriteNI fallback to TLBWrite if not available
TLBWriteNI was introduced in MMUv2 (to not invalidate uTLBs in Fast Path TLB Refill Handler). To avoid #ifdef'ery make it fallback to TLBWrite availabel on all MMUs. This will also help with next change Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Diffstat (limited to 'arch/arc/include')
-rw-r--r--arch/arc/include/asm/mmu.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/arc/include/asm/mmu.h b/arch/arc/include/asm/mmu.h
index 0abacb82a72b..26b731d32a2b 100644
--- a/arch/arc/include/asm/mmu.h
+++ b/arch/arc/include/asm/mmu.h
@@ -67,6 +67,8 @@
#if (CONFIG_ARC_MMU_VER >= 2)
#define TLBWriteNI 0x5 /* write JTLB without inv uTLBs */
#define TLBIVUTLB 0x6 /* explicitly inv uTLBs */
+#else
+#define TLBWriteNI TLBWrite /* Not present in hardware, fallback */
#endif
#if (CONFIG_ARC_MMU_VER >= 4)