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ARM: 8031/2: change fixmap mapping region to support 32 CPUs

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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 <[email protected]>
Signed-off-by: Liu Hua <[email protected]>
Signed-off-by: Russell King <[email protected]>
This commit is contained in:
Liu Hua 2014-04-18 09:43:32 +01:00 • committed by Russell King
commit a05e54c103
5 changed files with 29 additions and 21 deletions
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Documentation/arm/memory.txt
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@ -41,7 +41,7 @@ fffe8000 fffeffff DTCM mapping area for platforms with
fffe0000 fffe7fff ITCM mapping area for platforms with
ITCM mounted inside the CPU.
fff00000 fffdffff Fixmap mapping region. Addresses provided
fffc0000 ffdfffff Fixmap mapping region. Addresses provided
by fix_to_virt() will be located here.
fee00000 feffffff Mapping of PCI I/O space. This is a static