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Date:   Mon, 16 Oct 2023 07:46:47 +0200
From:   Christoph Hellwig <hch@lst.de>
To:     Kanchan Joshi <joshiiitr@gmail.com>
Cc:     Christoph Hellwig <hch@lst.de>,
        Kanchan Joshi <joshi.k@samsung.com>,
        Keith Busch <kbusch@kernel.org>, axboe@kernel.dk,
        sagi@grimberg.me, linux-nvme@lists.infradead.org,
        vincentfu@gmail.com, ankit.kumar@samsung.com,
        stable@vger.kernel.org, Vincent Fu <vincent.fu@samsung.com>
Subject: Re: [PATCH v4] nvme: fix corruption for passthrough meta/data
Message-ID: <20231016054647.GA26170@lst.de>
References: <CGME20231013052157epcas5p3dc0698c56f9846191d315fa8d33ccb5c@epcas5p3.samsung.com> <20231013051458.39987-1-joshi.k@samsung.com> <20231013052612.GA6423@lst.de> <8c755915-2366-28ff-ffd4-be17d797557c@samsung.com> <ZSlL-6Oa5J9duahR@kbusch-mbp> <3438f3b8-f7d4-f0bd-44ef-7efb09ed6151@samsung.com> <20231013154708.GA17455@lst.de> <CA+1E3rKaUW0YN+bphe9n26ZRTX1rq6M0z7Hpc=zLOJE1AER9hw@mail.gmail.com>
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On Mon, Oct 16, 2023 at 12:49:45AM +0530, Kanchan Joshi wrote:
> OTOH, this patch implemented a software-only way out. There are some
> checks, but someone (either SW or HW) has to do those to keep things
> right.

It only verifies it to the read/write family of commands by
interpreting these commands.  It still leaves a wide hole for any
other command.