A bug about system call on ARM

Will Deacon will.deacon at arm.com
Fri May 31 07:13:05 EDT 2013


On Fri, May 31, 2013 at 12:02:49PM +0100, Wang, Yalin wrote:
> Hi  Will,
> 
> I have merge your code ,
> But there is a different ,
> 
> +	
> +	ct_user_exit

I thought you didn't have ct_user_exit? In which case, just delete this
line.

> +#ifdef CONFIG_ALIGNMENT_TRAP
> +	ldr	ip, __cr_alignment
> +	ldr	ip, [ip]
> +	mcr	p15, 0, ip, c1, c0		@ update control register
> +#endif 
> 
> +	enable_irq
> +	get_thread_info tsk

Hard to tell without context. You can take a look at my git tree if you
like (I fixed it up based on Nico's comment):

  https://git.kernel.org/cgit/linux/kernel/git/will/linux.git/commit/?h=misc-patches

Will



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