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| author | Nicolas Pitre <nico@cam.org> | 2008-11-04 06:48:42 +0100 |
|---|---|---|
| committer | Nicolas Pitre <nico@cam.org> | 2009-03-16 02:01:22 +0100 |
| commit | 3f973e22160257c5bda85815be5b1540d391a671 (patch) | |
| tree | c453cc200f3cd71bd28195e9959034aa673a7693 /arch/arm/mm/mmu.c | |
| parent | [ARM] xsc3: add highmem support to L2 cache handling code (diff) | |
| download | linux-3f973e22160257c5bda85815be5b1540d391a671.tar.xz linux-3f973e22160257c5bda85815be5b1540d391a671.zip | |
[ARM] ignore high memory with VIPT aliasing caches
VIPT aliasing caches have issues of their own which are not yet handled.
Usage of discard_old_kernel_data() in copypage-v6.c is not highmem ready,
kmap/fixmap stuff doesn't take account of cache colouring, etc.
If/when those issues are handled then this could be reverted.
Signed-off-by: Nicolas Pitre <nico@marvell.com>
Diffstat (limited to 'arch/arm/mm/mmu.c')
| -rw-r--r-- | arch/arm/mm/mmu.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 4810a4c9ffce..cf504885a5fb 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -18,6 +18,7 @@ #include <asm/cputype.h> #include <asm/mach-types.h> #include <asm/sections.h> +#include <asm/cachetype.h> #include <asm/setup.h> #include <asm/sizes.h> #include <asm/tlb.h> @@ -678,6 +679,10 @@ static void __init sanity_check_meminfo(void) if (meminfo.nr_banks >= NR_BANKS) { printk(KERN_CRIT "NR_BANKS too low, " "ignoring high memory\n"); + } else if (cache_is_vipt_aliasing()) { + printk(KERN_CRIT "HIGHMEM is not yet supported " + "with VIPT aliasing cache, " + "ignoring high memory\n"); } else { memmove(bank + 1, bank, (meminfo.nr_banks - i) * sizeof(*bank)); |