diff options
| author | Liu Hua <sdu.liu@huawei.com> | 2014-04-18 10:43:32 +0200 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2014-04-23 12:09:42 +0200 |
| commit | a05e54c103b0b8e1dab5d04b411f1d48387c4903 (patch) | |
| tree | d9960fd5c3517f42f57c4513e28dd51a6353ec27 /arch/arm/mm/mmu.c | |
| parent | ARM: 8031/1: fixmap: remove FIX_KMAP_BEGIN and FIX_KMAP_END (diff) | |
| download | linux-a05e54c103b0b8e1dab5d04b411f1d48387c4903.tar.xz linux-a05e54c103b0b8e1dab5d04b411f1d48387c4903.zip | |
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>
Diffstat (limited to 'arch/arm/mm/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index b68c6b22e1c8..09c0a16165dc 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -35,6 +35,7 @@ #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/mach/pci.h> +#include <asm/fixmap.h> #include "mm.h" #include "tcm.h" @@ -1359,6 +1360,9 @@ static void __init kmap_init(void) #ifdef CONFIG_HIGHMEM pkmap_page_table = early_pte_alloc(pmd_off_k(PKMAP_BASE), PKMAP_BASE, _PAGE_KERNEL_TABLE); + + fixmap_page_table = early_pte_alloc(pmd_off_k(FIXADDR_START), + FIXADDR_START, _PAGE_KERNEL_TABLE); #endif } |