[PATCH v5 04/10] arm64: Add __flush_tlb_one()

[Tycho Andersen <tycho@docker.com>]

From: Juerg Haefliger <juerg.haefliger@hpe.com>

Add a hook for flushing a single TLB entry on arm64.

Signed-off-by: Juerg Haefliger <juerg.haefliger@canonical.com>
Tested-by: Tycho Andersen <tycho@docker.com>
---
 arch/arm64/include/asm/tlbflush.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/arch/arm64/include/asm/tlbflush.h b/arch/arm64/include/asm/tlbflush.h
index af1c76981911..8e0c49105d3e 100644
--- a/arch/arm64/include/asm/tlbflush.h
+++ b/arch/arm64/include/asm/tlbflush.h
@@ -184,6 +184,14 @@ static inline void flush_tlb_kernel_range(unsigned long start, unsigned long end
 	isb();
 }
 
+static inline void __flush_tlb_one(unsigned long addr)
+{
+	dsb(ishst);
+	__tlbi(vaae1is, addr >> 12);
+	dsb(ish);
+	isb();
+}
+
 /*
  * Used to invalidate the TLB (walk caches) corresponding to intermediate page
  * table levels (pgd/pud/pmd).
-- 
2.11.0

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