linux-ext4 - Re: [PATCH v7 6/9] scsi: ufs: Add inline encryption support to UFS

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Message-ID: <1583140656.10509.2.camel@mtksdccf07>
Date:   Mon, 2 Mar 2020 17:17:36 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     Eric Biggers <ebiggers@...nel.org>
CC:     Christoph Hellwig <hch@...radead.org>,
        Satya Tangirala <satyat@...gle.com>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-fscrypt@...r.kernel.org" <linux-fscrypt@...r.kernel.org>,
        "linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
        "linux-f2fs-devel@...ts.sourceforge.net" 
        <linux-f2fs-devel@...ts.sourceforge.net>,
        "linux-ext4@...r.kernel.org" <linux-ext4@...r.kernel.org>,
        Barani Muthukumaran <bmuthuku@....qualcomm.com>,
        Kuohong Wang (王國鴻) 
        <kuohong.wang@...iatek.com>, Kim Boojin <boojin.kim@...sung.com>,
        Ladvine D Almeida <Ladvine.DAlmeida@...opsys.com>,
        Parshuram Raju Thombare <pthombar@...ence.com>
Subject: Re: [PATCH v7 6/9] scsi: ufs: Add inline encryption support to UFS

Hi Eric and all,

On Wed, 2020-02-26 at 14:43 +0800, Stanley Chu wrote:
> Hi Eric,
> 
> On Tue, 2020-02-25 at 17:12 -0800, Eric Biggers wrote:

> > 
> > I'm not sure about the UFS controllers from Synopsys, Cadence, or Samsung, all
> > of which apparently have implemented some form of the crypto support too.  But I
> > wouldn't get my hopes up that everyone followed the UFS standard precisely.
> > 
> > So if there are no objections, IMO we should make the crypto support opt-in.
> > 
> > That makes it even more important to upstream the crypto support for specific
> > hardware like ufs-qcom and ufs-mediatek, since otherwise the ufshcd-crypto code
> > would be unusable even theoretically.  I'm volunteering to handle ufs-qcom with
> > https://lkml.kernel.org/linux-block/20200110061634.46742-1-ebiggers@kernel.org/.
> > Stanley, could you send out ufs-mediatek support as an RFC so people can see
> > better what it involves?
> 
> Sure, I will send out our RFC patches. Please allow me some time for
> submission.

The ufs-mediatek RFC patch is uploaded as
https://patchwork.kernel.org/patch/11415051/

This patch is rebased to the latest wip-inline-encryption branch in
Eric Biggers's git:
https://git.kernel.org/pub/scm/linux/kernel/git/ebiggers/linux.git/

Thanks,
Stanley Chu