From: Mark Rutland <mark.rutland@arm.com>
Date: Mon, 2 Dec 2013 16:11:00 +0000 (+0000)
Subject: arm64: ensure completion of TLB invalidatation
X-Git-Tag: v3.13-rc4~48^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3cea71bc6b470372ae407881b87128aadf0afec0;p=pandora-kernel.git

arm64: ensure completion of TLB invalidatation

Currently there is no dsb between the tlbi in __cpu_setup and the write
to SCTLR_EL1 which enables the MMU in __turn_mmu_on. This means that the
TLB invalidation is not guaranteed to have completed at the point
address translation is enabled, leading to a number of possible issues
including incorrect translations and TLB conflict faults.

This patch moves the tlbi in __cpu_setup above an existing dsb used to
synchronise I-cache invalidation, ensuring that the TLBs have been
invalidated at the point the MMU is enabled.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---

Reading git-diff-tree failed