Dave Hansen wrote:
> The kernel currently uses an 8k stack, per task.  Here is the
> infrastructure needed to allow us to halve that.
> 
> B-interrupt_stacks-2.5.50+bk-5.patch
>     Have special stacks for use in interrupts.
<snip>
>  	struct restart_block    restart_block;
> +	struct thread_info	*irq_stack;	/* pointer to cpu irq stack */
>  
>  	__u8			supervisor_stack[0];
>  };
> @@ -48,6 +50,7 @@
>  #define TI_PRE_COUNT	0x00000010
>  #define TI_ADDR_LIMIT	0x00000014
>  #define TI_RESTART_BLOCK 0x0000018
> +#define TI_IRQ_STACK	0x00000022

I imagined a * after restart_block, and thus made the TI_IRQ_STACK	 
incorrect.  The attached patch is correct it.  I just switched 
restart_block and irq_stack's places.


-- 
Dave Hansen
haveblue@us.ibm.com