arm64: mm: Add THP TLB entries to general mmu_gather

stevecapperlinaro · ctmarinas · commit 2eb835e058c7 · 2014-04-25T16:46:49.000+01:00
When arm64 moved over to the core mmu_gather, it lost the logic to
flush THP TLB entries (tlb_remove_pmd_tlb_entry was removed and the
core implementation only signals that the mmu_gather needs a flush).

This patch ensures that tlb_add_flush is called for THP TLB entries.

Signed-off-by: Steve Capper &lt;steve.capper@linaro.org&gt;
Acked-by: Will Deacon &lt;will.deacon@arm.com&gt;
Signed-off-by: Catalin Marinas &lt;catalin.marinas@arm.com&gt;
diff --git a/arch/arm64/include/asm/tlb.h b/arch/arm64/include/asm/tlb.h
@@ -19,6 +19,7 @@
 #ifndef __ASM_TLB_H
 #define __ASM_TLB_H
 
+#define  __tlb_remove_pmd_tlb_entry __tlb_remove_pmd_tlb_entry
 
 #include <asm-generic/tlb.h>
 
@@ -99,5 +100,10 @@ static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmdp,
 }
 #endif
 
+static inline void __tlb_remove_pmd_tlb_entry(struct mmu_gather *tlb, pmd_t *pmdp,
+						unsigned long address)
+{
+	tlb_add_flush(tlb, address);
+}
 
 #endif
