diff options
| author | Fenkart/Bostandzhyan <andreas.fenkart@streamunlimited.com> | 2010-02-07 21:47:58 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-02-15 22:40:33 +0100 |
| commit | a183927213df225bd93d21857b6aaafbb95e590d (patch) | |
| tree | 4bda3f0d2f59e3ca9dc92159fe77911c65f78b20 /arch/arm | |
| parent | ARM: 5928/1: Change type of VMALLOC_END to unsigned long. (diff) | |
| download | linux-a183927213df225bd93d21857b6aaafbb95e590d.tar.xz linux-a183927213df225bd93d21857b6aaafbb95e590d.zip | |
ARM: 5929/1: Add checks to detect overlap of memory regions.
Tested-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Andreas Fenkart <andreas.fenkart@streamunlimited.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mm/init.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index 3a2077239474..7829cb5425f5 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -686,6 +686,23 @@ void __init mem_init(void) #undef MLM #undef MLK_ROUNDUP + /* + * Check boundaries twice: Some fundamental inconsistencies can + * be detected at build time already. + */ +#ifdef CONFIG_MMU + BUILD_BUG_ON(VMALLOC_END > CONSISTENT_BASE); + BUG_ON(VMALLOC_END > CONSISTENT_BASE); + + BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR); + BUG_ON(TASK_SIZE > MODULES_VADDR); +#endif + +#ifdef CONFIG_HIGHMEM + BUILD_BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET); + BUG_ON(PKMAP_BASE + LAST_PKMAP * PAGE_SIZE > PAGE_OFFSET); +#endif + if (PAGE_SIZE >= 16384 && num_physpages <= 128) { extern int sysctl_overcommit_memory; /* |