1 files changed, 54 insertions, 0 deletions

diff --git a/include/asm-ppc64/tlbflush.h b/include/asm-ppc64/tlbflush.h
new file mode 100644
index 000000000000..45411a67e082
--- /dev/null
+++ b/include/asm-ppc64/tlbflush.h
@@ -0,0 +1,54 @@
+#ifndef _PPC64_TLBFLUSH_H
+#define _PPC64_TLBFLUSH_H
+
+/*
+ * TLB flushing:
+ *
+ *  - flush_tlb_mm(mm) flushes the specified mm context TLB's
+ *  - flush_tlb_page(vma, vmaddr) flushes one page
+ *  - flush_tlb_page_nohash(vma, vmaddr) flushes one page if SW loaded TLB
+ *  - flush_tlb_range(vma, start, end) flushes a range of pages
+ *  - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
+ *  - flush_tlb_pgtables(mm, start, end) flushes a range of page tables
+ */
+
+#include <linux/percpu.h>
+#include <asm/page.h>
+
+#define PPC64_TLB_BATCH_NR 192
+
+struct mm_struct;
+struct ppc64_tlb_batch {
+        unsigned long index;
+        unsigned long context;
+        struct mm_struct *mm;
+        pte_t pte[PPC64_TLB_BATCH_NR];
+        unsigned long addr[PPC64_TLB_BATCH_NR];
+        unsigned long vaddr[PPC64_TLB_BATCH_NR];
+};
+DECLARE_PER_CPU(struct ppc64_tlb_batch, ppc64_tlb_batch);
+
+extern void __flush_tlb_pending(struct ppc64_tlb_batch *batch);
+
+static inline void flush_tlb_pending(void)
+{
+        struct ppc64_tlb_batch *batch = &get_cpu_var(ppc64_tlb_batch);
+
+        if (batch->index)
+                __flush_tlb_pending(batch);
+        put_cpu_var(ppc64_tlb_batch);
+}
+
+#define flush_tlb_mm(mm)                        flush_tlb_pending()
+#define flush_tlb_page(vma, addr)               flush_tlb_pending()
+#define flush_tlb_page_nohash(vma, addr)        do { } while (0)
+#define flush_tlb_range(vma, start, end) \
+                do { (void)(start); flush_tlb_pending(); } while (0)
+#define flush_tlb_kernel_range(start, end)      flush_tlb_pending()
+#define flush_tlb_pgtables(mm, start, end)      do { } while (0)
+
+extern void flush_hash_page(unsigned long context, unsigned long ea, pte_t pte,
+                            int local);
+void flush_hash_range(unsigned long context, unsigned long number, int local);
+
+#endif /* _PPC64_TLBFLUSH_H */