linux-kernel - Re: [PATCH RESEND 1/2] scsi: vmw

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Message-ID: <MN2PR05MB61418001C0180C55D4D72B45A12D0@MN2PR05MB6141.namprd05.prod.outlook.com>
Date:   Fri, 20 Dec 2019 08:56:12 +0000
From:   Thomas Hellstrom <thellstrom@...are.com>
To:     "Martin K. Petersen" <martin.petersen@...cle.com>,
        Thomas Hellström (VMware) 
        <thomas_os@...pmail.org>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Pv-drivers <Pv-drivers@...are.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        Vishal Bhakta <vbhakta@...are.com>, Jim Gill <jgill@...are.com>
Subject: Re: [PATCH RESEND 1/2] scsi: vmw_pvscsi: Fix swiotlb operation

On 12/20/19 4:44 AM, Martin K. Petersen wrote:
> Thomas,
>
>> With swiotlb, the first byte of the sense buffer may in some cases be
>> uninitialized since we use DMA_FROM_DEVICE, and the device incorrectly
>> doesn't clear it. In those cases, clear it after DMA unmapping.
> Applied 1+2 to 5.6/scsi-queue, thanks!
>
Thanks!

Thomas