From: Carlo Caione <carlo@caione.org>
Date: Mon, 9 Feb 2015 09:38:35 +0000 (+0100)
Subject: ARM: 8304/1: Respect NO_KERNEL_MAPPING when we don't have an IOMMU
X-Git-Tag: omap-for-v4.1/fixes-rc1~142^2~37
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6e8266e3333bd01700decf9866725e254d84f21a;p=pandora-kernel.git

ARM: 8304/1: Respect NO_KERNEL_MAPPING when we don't have an IOMMU

Even without an iommu, NO_KERNEL_MAPPING is still convenient to save on
kernel address space in places where we don't need a kernel mapping.
Implement support for it in the two places where we're creating an
expensive mapping.

__alloc_from_pool uses an internal pool from which we already have
virtual addresses, so it's not relevant, and __alloc_simple_buffer uses
alloc_pages, which will always return a lowmem page, which is already
mapped into kernel space, so we can't prevent a mapping for it in that
case.

Signed-off-by: Jasper St. Pierre <jstpierre@mecheye.net>
Signed-off-by: Carlo Caione <carlo@caione.org>
Reviewed-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Daniel Drake <dsd@endlessm.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

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