[PATCH v7 2/4] arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable

Chintan Pandya
2018-03-28T12:31:20Z

Add an interface to invalidate intermediate page tables
from TLB for kernel.

Signed-off-by: Chintan Pandya <cpandya@codeaurora.org>
---
arch/arm64/include/asm/tlbflush.h | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index 9e82dd7..6a4816d 100644
--- a/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@ -209,6 +209,12 @@ static inline void __flush_tlb_pgtable(struct mm_struct *mm,
dsb(ish);
}

+static inline void __flush_tlb_kernel_pgtable(unsigned long addr)
+{
+ addr >>= 12;
+ __tlbi(vaae1is, addr);
+ dsb(ish);
+}
#endif

#endif