[PATCH v9 2/4] arm64: tlbflush: Introduce __flush_tlb_kernel_pgtable

[Chintan Pandya]

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

Signed-off-by: Chintan Pandya <cpandya@xxxxxxxxxxxxxx>
---
 arch/arm64/include/asm/tlbflush.h | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index dfc61d7..a4a1901 100644
--- 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
-- 
Qualcomm India Private Limited, on behalf of Qualcomm Innovation
Center, Inc., is a member of Code Aurora Forum, a Linux Foundation
Collaborative Project