linux-kernel - Re: [v5][PATCH 2/6] powerpc/book3e: store critical/machine/debug exception thread info

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Date:	Fri, 18 Oct 2013 17:43:33 -0500
From:	Scott Wood <scottwood@...escale.com>
To:	Tiejun Chen <tiejun.chen@...driver.com>
CC:	<benh@...nel.crashing.org>, <linuxppc-dev@...ts.ozlabs.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [v5][PATCH 2/6] powerpc/book3e: store critical/machine/debug
 exception thread info

On Thu, 2013-06-20 at 18:28 +0800, Tiejun Chen wrote:
> We need to store thread info to these exception thread info like something
> we already did for PPC32.
> 
> Signed-off-by: Tiejun Chen <tiejun.chen@...driver.com>
> ---
>  arch/powerpc/kernel/exceptions-64e.S |   15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/arch/powerpc/kernel/exceptions-64e.S b/arch/powerpc/kernel/exceptions-64e.S
> index 4d8e57f..07cf657 100644
> --- a/arch/powerpc/kernel/exceptions-64e.S
> +++ b/arch/powerpc/kernel/exceptions-64e.S
> @@ -67,6 +67,18 @@
>  	std	r10,PACA_##level##_STACK(r13);
>  #endif
>  
> +/* Store something to exception thread info */
> +#define	BOOK3E_STORE_EXC_LEVEL_THEAD_INFO(type)					\
> +	ld	r14,PACAKSAVE(r13);						\
> +	CURRENT_THREAD_INFO(r14, r14);						\
> +	CURRENT_THREAD_INFO(r15, r1);						\
> +	ld	r10,TI_FLAGS(r14);		     				\
> +	std	r10,TI_FLAGS(r15);			     			\
> +	ld	r10,TI_PREEMPT(r14);		     				\
> +	std	r10,TI_PREEMPT(r15);		     				\
> +	ld	r10,TI_TASK(r14);			     			\
> +	std	r10,TI_TASK(r15);

Where is "type" used?

BTW, no need for a BOOK3E prefix for things local to this file.

-Scott



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