linux-kernel - Re: [PATCH 0/3] RDMA/hns: Bug fixes in hns RoCE driver

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Message-ID: <5A1D01F4.8000800@huawei.com>
Date:   Tue, 28 Nov 2017 14:28:04 +0800
From:   "Wei Hu (Xavier)" <xavier.huwei@...wei.com>
To:     Jason Gunthorpe <jgg@...pe.ca>
CC:     <dledford@...hat.com>, <linux-rdma@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <xavier.huwei@....com>,
        <xavier_huwei@....com>, <linuxarm@...wei.com>
Subject: Re: [PATCH 0/3] RDMA/hns: Bug fixes in hns RoCE driver



On 2017/11/28 2:36, Jason Gunthorpe wrote:
> On Mon, Nov 27, 2017 at 10:41:21AM +0800, Wei Hu (Xavier) wrote:
>> This patch-set introduces three patches to fix about the memory
>> related issues.
> If these patches are for-rc can you revise the commit message to more
> clearly explain what the bug is, and supply Fixes lines?
Ok,  I will modify the commit message and add Fixes lines.
And I will send patch V2 for-rc.
Thanks.

> Otherwise these will go to 4.16
>
> It looks like the first one is for-rc material as it looks like DMA
> will fail sometimes if the smmu is enabled?
Yes, The first one fixes the MTPT configuration error that probably
cause dma operation
    failure.
> The other two are less clear to me - is this just fixing the code to
> conform to the DMA API, or is there an actual real user-impacting bug here?
The other two patches fixes incorrect usage of dma API that may
cause coherency problems.

Regards
Wei Hu
> Thanks
> Jason
>
>