diff options
| author | Rune Torgersen <runet@innovsys.com> | 2008-05-24 01:59:15 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2008-06-09 13:46:40 +1000 |
| commit | 7c4f10b9003dc8423df07574ba197bbbe3bc382b (patch) | |
| tree | be7dd0f555d4ae07a320dca922d1b8e96f517901 | |
| parent | cec0dd94cf2628d5ba184e725f02be061e7bb014 (diff) | |
| download | linux-7c4f10b9003dc8423df07574ba197bbbe3bc382b.tar.bz2 | |
powerpc: Check that TASK_SIZE does not overlap KERNEL_START
Make sure CONFIG_TASK_SIZE does not overlap CONFIG_KERNEL_START
This could happen when overriding settings to get 1GB lowmem, and would lead
to userland mysteriousely hanging.
This setting is only used by PPC32.
Signed-off-by: Rune Torgersen <runet@innovsys.com>
Acked-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
| -rw-r--r-- | include/asm-powerpc/processor.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h index cf83f2d7e2a5..a1deed85f31d 100644 --- a/include/asm-powerpc/processor.h +++ b/include/asm-powerpc/processor.h @@ -81,6 +81,10 @@ extern struct task_struct *last_task_used_altivec; extern struct task_struct *last_task_used_spe; #ifdef CONFIG_PPC32 + +#if CONFIG_TASK_SIZE > CONFIG_KERNEL_START +#error User TASK_SIZE overlaps with KERNEL_START address +#endif #define TASK_SIZE (CONFIG_TASK_SIZE) /* This decides where the kernel will search for a free chunk of vm |