From: Will Deacon <will.deacon@arm.com>
Date: Thu, 28 Feb 2013 16:48:11 +0000 (+0100)
Subject: ARM: 7660/1: tlb: add branch predictor maintenance operations
X-Git-Tag: v3.9-rc2~17^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=862c588f062fe9339a180cf6429e4df1855c376a;p=pandora-kernel.git

ARM: 7660/1: tlb: add branch predictor maintenance operations

The ARM architecture requires explicit branch predictor maintenance
when updating an instruction stream for a given virtual address. In
reality, this isn't so much of a burden because the branch predictor
is flushed during the cache maintenance required to make the new
instructions visible to the I-side of the processor.

However, there are still some cases where explicit flushing is required,
so add a local_bp_flush_all operation to deal with this.

Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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