linux-kernel - Re: [PATCH 17/28] nios2: Signal handling support

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Message-ID: <5358E4B9.1050308@nod.at>
Date:	Thu, 24 Apr 2014 12:17:29 +0200
From:	Richard Weinberger <richard@....at>
To:	Ley Foon Tan <lftan@...era.com>
CC:	Linux-Arch <linux-arch@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	cltang@...esourcery.com
Subject: Re: [PATCH 17/28] nios2: Signal handling support

Am 24.04.2014 12:13, schrieb Ley Foon Tan:
> On Thu, Apr 24, 2014 at 6:01 PM, Ley Foon Tan <lftan@...era.com> wrote:
>> On Sun, Apr 20, 2014 at 3:29 AM, Richard Weinberger
>> <richard.weinberger@...il.com> wrote:
>>
>>>> +
>>>> +       /* Default to using normal stack.  */
>>>> +       usp = regs->sp;
>>>> +
>>>> +       /* This is the X/Open sanctioned signal stack switching.  */
>>>> +       if ((ka->sa.sa_flags & SA_ONSTACK) && (current->sas_ss_sp != 0)) {
>>>> +               if (!on_sig_stack(usp))
>>>> +                       usp = current->sas_ss_sp + current->sas_ss_size;
>>>> +       }
>>>
>>> You can use sigsp() here.
>> Okay.
>>
> I just noticed that sigsp() have struct ksignal argument. We can use
> sigsp() for nios2 because it doesn't have struct ksignal.
> 
> unsigned long sigsp(unsigned long sp, struct ksignal *ksig);

Did you at look at the struct ksignal definition and the clean series I've
pointed you to?

Thanks,
//richard
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