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: <ff139f62-fb93-aa19-a8e5-6f9e0d064998@huawei.com>
Date:   Wed, 23 Nov 2016 08:59:16 +0000
From:   John Garry <john.garry@...wei.com>
To:     Zhangfei Gao <zhangfei.gao@...il.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 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>
>>
>> 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.

Thanks,
John