Merge remote-tracking branches 'spi/topic/spidev', 'spi/topic/sunxi', 'spi/topic...

[linux.git] / arch / powerpc / include / asm / book3s / 64 / tlbflush.h

diff --git a/arch/powerpc/include/asm/book3s/64/tlbflush.h b/arch/powerpc/include/asm/book3s/64/tlbflush.h
index d98424ae356c49356c459334468c488b786b9be8..96e5769b18b00fe8fbcd7d788c3c94457d15a98a 100644 (file)
--- a/arch/powerpc/include/asm/book3s/64/tlbflush.h
+++ b/arch/powerpc/include/asm/book3s/64/tlbflush.h
@@ -72,5 +72,19 @@ static inline void flush_tlb_page(struct vm_area_struct *vma,
 #define flush_tlb_mm(mm)               local_flush_tlb_mm(mm)
 #define flush_tlb_page(vma, addr)      local_flush_tlb_page(vma, addr)
 #endif /* CONFIG_SMP */
+/*
+ * flush the page walk cache for the address
+ */
+static inline void flush_tlb_pgtable(struct mmu_gather *tlb, unsigned long address)
+{
+       /*
+        * Flush the page table walk cache on freeing a page table. We already
+        * have marked the upper/higher level page table entry none by now.
+        * So it is safe to flush PWC here.
+        */
+       if (!radix_enabled())
+               return;
 
+       radix__flush_tlb_pwc(tlb, address);
+}
 #endif /*  _ASM_POWERPC_BOOK3S_64_TLBFLUSH_H */