* [PATCH]: Check that TASK_SIZE does not overlap KERNEL_START
@ 2008-05-23 15:59 Rune Torgersen
2008-05-23 17:55 ` Kumar Gala
0 siblings, 1 reply; 2+ messages in thread
From: Rune Torgersen @ 2008-05-23 15:59 UTC (permalink / raw)
To: linuxppc-dev
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>
diff --git a/include/asm-powerpc/processor.h b/include/asm-powerpc/processor.h
index fd98ca9..72e0e3f 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
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH]: Check that TASK_SIZE does not overlap KERNEL_START
2008-05-23 15:59 [PATCH]: Check that TASK_SIZE does not overlap KERNEL_START Rune Torgersen
@ 2008-05-23 17:55 ` Kumar Gala
0 siblings, 0 replies; 2+ messages in thread
From: Kumar Gala @ 2008-05-23 17:55 UTC (permalink / raw)
To: Rune Torgersen; +Cc: linuxppc-dev
On May 23, 2008, at 10:59 AM, Rune Torgersen wrote:
> 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>
you seem to have lost a colon.
Acked-by: Kumar Gala <galak@kernel.crashing.org>
- k
^ permalink raw reply [flat|nested] 2+ messages in thread
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