linux-kernel - Re: [PATCH 05/28] nios2: Traps exception handling

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Message-ID: <CAFiDJ5_XXXRAG7nv8zb6myK1Vn97SHRTq2mvf4AJhH9ZDSHVQg@mail.gmail.com>
Date:	Wed, 23 Apr 2014 18:07:49 +0800
From:	Ley Foon Tan <lftan@...era.com>
To:	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>
Cc:	Linux-Arch <linux-arch@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	cltang@...esourcery.com
Subject: Re: [PATCH 05/28] nios2: Traps exception handling

On Tue, Apr 22, 2014 at 10:28 PM, Ezequiel Garcia
<ezequiel.garcia@...e-electrons.com> wrote:
> Hello Ley Foon,
>
> On Apr 19, Ley Foon Tan wrote:
>> +
>> +#ifndef CONFIG_ALIGNMENT_TRAP
>> +/* Alignment exception handler */
>> +asmlinkage void handle_unaligned_c(struct pt_regs *fp, int cause)
>> +{
>> +     unsigned long addr = RDCTL(CTL_BADADDR);
>> +
>> +     cause >>= 2;
>> +     fp->ea -= 4;
>> +
>> +     if (fixup_exception(fp))
>> +             return;
>
> This will throw an undeclared error if you build with CONFIG_ALIGNMENT_TRAP=n.
>
> You need to add the uaccess.h header, or implement some similar fix.
Okay, I will try with CONFIG_ALIGNMENT_TRAP=n and fix it.
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