arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable

Add an interface to invalidate intermediate page tables from TLB for kernel. Acked-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Chintan Pandya <cpandya@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com>
mariux64 · Jul 6, 2018 · 05f2d2f · 05f2d2f
1 parent f355152
commit 05f2d2f
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
@@ -218,6 +218,13 @@ static inline void __flush_tlb_pgtable(struct mm_struct *mm,
 	dsb(ish);
 }
 
+static inline void __flush_tlb_kernel_pgtable(unsigned long kaddr)
+{
+	unsigned long addr = __TLBI_VADDR(kaddr, 0);
+
+	__tlbi(vaae1is, addr);
+	dsb(ish);
+}
 #endif
 
 #endif