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authorNicolas Pitre <nico@cam.org>2008-11-04 00:48:42 -0500
committerNicolas Pitre <nico@cam.org>2009-03-15 21:01:22 -0400
commit3f973e22160257c5bda85815be5b1540d391a671 (patch)
treec453cc200f3cd71bd28195e9959034aa673a7693 /arch/arm/mm/mmu.c
parent3902a15e784e9b1efa8e6ad246489c609e0ef880 (diff)
[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.c5
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 @@
18#include <asm/cputype.h> 18#include <asm/cputype.h>
19#include <asm/mach-types.h> 19#include <asm/mach-types.h>
20#include <asm/sections.h> 20#include <asm/sections.h>
21#include <asm/cachetype.h>
21#include <asm/setup.h> 22#include <asm/setup.h>
22#include <asm/sizes.h> 23#include <asm/sizes.h>
23#include <asm/tlb.h> 24#include <asm/tlb.h>
@@ -678,6 +679,10 @@ static void __init sanity_check_meminfo(void)
678 if (meminfo.nr_banks >= NR_BANKS) { 679 if (meminfo.nr_banks >= NR_BANKS) {
679 printk(KERN_CRIT "NR_BANKS too low, " 680 printk(KERN_CRIT "NR_BANKS too low, "
680 "ignoring high memory\n"); 681 "ignoring high memory\n");
682 } else if (cache_is_vipt_aliasing()) {
683 printk(KERN_CRIT "HIGHMEM is not yet supported "
684 "with VIPT aliasing cache, "
685 "ignoring high memory\n");
681 } else { 686 } else {
682 memmove(bank + 1, bank, 687 memmove(bank + 1, bank,
683 (meminfo.nr_banks - i) * sizeof(*bank)); 688 (meminfo.nr_banks - i) * sizeof(*bank));