Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / arch / arc / include / asm / tlb.h

diff --git a/kernel/arch/arc/include/asm/tlb.h b/kernel/arch/arc/include/asm/tlb.h
new file mode 100644 (file)
index 0000000..a9db5f6
--- /dev/null
+++ b/kernel/arch/arc/include/asm/tlb.h
@@ -0,0 +1,47 @@
+/*
+ * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com)
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _ASM_ARC_TLB_H
+#define _ASM_ARC_TLB_H
+
+#define tlb_flush(tlb)                         \
+do {                                           \
+       if (tlb->fullmm)                        \
+               flush_tlb_mm((tlb)->mm);        \
+} while (0)
+
+/*
+ * This pair is called at time of munmap/exit to flush cache and TLB entries
+ * for mappings being torn down.
+ * 1) cache-flush part -implemented via tlb_start_vma( ) for VIPT aliasing D$
+ * 2) tlb-flush part - implemted via tlb_end_vma( ) flushes the TLB range
+ *
+ * Note, read http://lkml.org/lkml/2004/1/15/6
+ */
+#ifndef CONFIG_ARC_CACHE_VIPT_ALIASING
+#define tlb_start_vma(tlb, vma)
+#else
+#define tlb_start_vma(tlb, vma)                                                \
+do {                                                                   \
+       if (!tlb->fullmm)                                               \
+               flush_cache_range(vma, vma->vm_start, vma->vm_end);     \
+} while(0)
+#endif
+
+#define tlb_end_vma(tlb, vma)                                          \
+do {                                                                   \
+       if (!tlb->fullmm)                                               \
+               flush_tlb_range(vma, vma->vm_start, vma->vm_end);       \
+} while (0)
+
+#define __tlb_remove_tlb_entry(tlb, ptep, address)
+
+#include <linux/pagemap.h>
+#include <asm-generic/tlb.h>
+
+#endif /* _ASM_ARC_TLB_H */