ARM: 8031/2: change fixmap mapping region to support 32 CPUs
authorLiu Hua <sdu.liu@huawei.com>
Fri, 18 Apr 2014 08:43:32 +0000 (09:43 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Wed, 23 Apr 2014 10:09:42 +0000 (11:09 +0100)
commita05e54c103b0b8e1dab5d04b411f1d48387c4903
treed9960fd5c3517f42f57c4513e28dd51a6353ec27
parent4221e2e6b3160e4b558df14fa79f025c0e277935
ARM: 8031/2: change fixmap mapping region to support 32 CPUs

In 32-bit ARM systems, the fixmap mapping region can support no more
than 14 CPUs(total: 896k; one CPU: 64K). And we can configure NR_CPUS
up to 32. So there is a mismatch.

This patch moves fixmapping region downwards to region 0xffc00000-
0xffe00000. Then the fixmap mapping region can support up to 32 CPUs.

Reviewed-by: Nicolas Pitre <nico@linaro.org>
Signed-off-by: Liu Hua <sdu.liu@huawei.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Documentation/arm/memory.txt
arch/arm/include/asm/fixmap.h
arch/arm/include/asm/highmem.h
arch/arm/mm/highmem.c
arch/arm/mm/mmu.c