arm64: Implement IPI based TLB invalidation

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Subject: arm64: Implement IPI based TLB invalidation
From: Matthias Brugger <mbrugger@xxxxxxxx>
Date: Thu, 4 Aug 2016 11:15:13 +0200
Cc: suzuki.poulose@xxxxxxx, james.morse@xxxxxxx, david.daney@xxxxxxxxxx, rrichter@xxxxxxxxxx, agraf@xxxxxxx, mbrugger@xxxxxxxx, mark.rutland@xxxxxxx, lorenzo.pieralisi@xxxxxxx, dave.long@xxxxxxxxxx, ard.biesheuvel@xxxxxxxxxx, zlim.lnx@xxxxxxxxx, kvm@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, kvmarm@xxxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx

This patch set adds a workaround for arm64 if the hardware didn't
implement the TLB invalidation via broadcast TLBI properly.

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Follow-Ups:
- [PATCH] arm64: Add workaround for Cavium erratum 26026
  - From: Robert Richter
- [PATCH 2/4] arm64: Implement IPI based TLB invalidation
  - From: Matthias Brugger
- [PATCH 1/4] arm64: insn: Do not disable irqs during patching
  - From: Matthias Brugger
- [PATCH 3/4] KVM: arm/arm64: Check for broadcast TLBI support
  - From: Matthias Brugger
- [PATCH 4/4] arm64: hibernate: Check for broadcast TLBI support
  - From: Matthias Brugger

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