From 587b9b6487acddf777301c867c24f31fdf4ada4a Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@arm.com>
Date: Thu, 23 May 2013 18:29:18 +0100
Subject: [PATCH] ARM: tlb: don't bother with barriers for branch predictor
 maintenance

Branch predictor maintenance is only required when we are either
changing the kernel's view of memory (switching tables completely) or
dealing with ASID rollover.

Both of these use-cases require subsequent TLB invalidation, which has
the relevant barrier instructions to ensure completion and visibility
of the maintenance, so this patch removes the instruction barrier from
[local_]flush_bp_all.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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