linux-kernel - Re: [PATCH 01/11] hisi_sas: add v2 hw support for ECC and AXI bus fatal error

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Message-ID: <CAMj5Bkg0y5fZDtZstZ84qtWOKV9Hrfj0hMc2LyqxUMnwu=F2zA@mail.gmail.com>
Date:   Wed, 23 Nov 2016 17:13:52 +0800
From:   Zhangfei Gao <zhangfei.gao@...il.com>
To:     John Garry <john.garry@...wei.com>
Cc:     martin.petersen@...cle.com, jejb@...ux.vnet.ibm.com,
        linux-scsi@...r.kernel.org, linuxarm@...wei.com,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        John Garry <john.garry2@...l.dcu.ie>,
        Xiang Chen <chenxiang66@...ilicon.com>
Subject: Re: [PATCH 01/11] hisi_sas: add v2 hw support for ECC and AXI bus
 fatal error

On Wed, Nov 23, 2016 at 4:59 PM, John Garry <john.garry@...wei.com> wrote:
> On 16/11/2016 01:47, Zhangfei Gao wrote:
>>
>> On Mon, Nov 7, 2016 at 8:48 PM, John Garry <john.garry@...wei.com> wrote:
>>>
>>> From: Xiang Chen <chenxiang66@...ilicon.com>

Reviewed-by: Zhangfei Gao <zhangfei.gao@...aro.org>

>>>
>>> For ECC 1bit error, logic can recover it, so we only print
>>> a warning.
>>> For ECC multi-bit and AXI bus fatal error, we panic.
>>
>>
>> Is it possible to recover via resetting phy and device etc instead of
>> panic?
>>
>> Thanks
>>
>>
>
>
> Hi Zhangfei,
>
> We are actually now working on supporting controller reset for certain
> AXI/ECC errors, so that we will not need to panic.

Got it, thanks for the info.

Thanks