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

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Message-ID: <yq1sglf8xv0.fsf@oracle.com>
Date:   Thu, 19 Dec 2019 22:44:19 -0500
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Thomas Hellström (VMware) 
        <thomas_os@...pmail.org>
Cc:     linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
        pv-drivers@...are.com, Thomas Hellstrom <thellstrom@...are.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Vishal Bhakta <vbhakta@...are.com>, Jim Gill <jgill@...are.com>
Subject: Re: [PATCH RESEND 1/2] scsi: vmw_pvscsi: Fix swiotlb operation


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!

-- 
Martin K. Petersen	Oracle Linux Engineering