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Date: Tue, 17 Jun 2025 19:33:46 +0200
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Reply-To: Daniel Gomez <da.gomez@kernel.org>
Subject: Re: [PATCH 7/9] nvme-pci: convert the data mapping blk_rq_dma_map
To: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>, Keith Busch <kbusch@kernel.org>,
 Sagi Grimberg <sagi@grimberg.me>, Chaitanya Kulkarni <kch@nvidia.com>,
 Kanchan Joshi <joshi.k@samsung.com>, Leon Romanovsky <leon@kernel.org>,
 Nitesh Shetty <nj.shetty@samsung.com>, Logan Gunthorpe
 <logang@deltatee.com>, linux-block@vger.kernel.org,
 linux-nvme@lists.infradead.org
References: <20250610050713.2046316-1-hch@lst.de>
 <20250610050713.2046316-8-hch@lst.de>
 <5c4f1a7f-b56f-4a97-a32e-fa2ded52922a@kernel.org>
 <20250612050256.GH12863@lst.de>
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 <20250616113355.GA21945@lst.de>
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From: Daniel Gomez <da.gomez@kernel.org>
Organization: kernel.org
In-Reply-To: <20250616113355.GA21945@lst.de>
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On 16/06/2025 13.33, Christoph Hellwig wrote:
> On Mon, Jun 16, 2025 at 09:41:15AM +0200, Daniel Gomez wrote:
>> Also, if host segments are between 4k and 16k, PRPs would be able to support it
>> but this limit prevents that use case. I guess the question is if you see any
>> blocker to enable this path?
> 
> Well, if you think it's worth it give it a spin on a wide variety of
> hardware.

I'm not sure if I understand this. Can you clarify why hardware evaluation would
be required? What exactly?