linux-kernel - Re: [PATCH v10 02/24] dma-mapping: move the PCI P2PDMA mapping helpers to pci-p2pdma.h

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Message-ID: <abbb616e-9ca2-4811-8721-9aa746a4d600@linux.intel.com>
Date: Tue, 29 Apr 2025 10:09:07 +0800
From: Baolu Lu <baolu.lu@...ux.intel.com>
To: Leon Romanovsky <leon@...nel.org>,
 Marek Szyprowski <m.szyprowski@...sung.com>, Jens Axboe <axboe@...nel.dk>,
 Christoph Hellwig <hch@....de>, Keith Busch <kbusch@...nel.org>
Cc: Jake Edge <jake@....net>, Jonathan Corbet <corbet@....net>,
 Jason Gunthorpe <jgg@...pe.ca>, Zhu Yanjun <zyjzyj2000@...il.com>,
 Robin Murphy <robin.murphy@....com>, Joerg Roedel <joro@...tes.org>,
 Will Deacon <will@...nel.org>, Sagi Grimberg <sagi@...mberg.me>,
 Bjorn Helgaas <bhelgaas@...gle.com>, Logan Gunthorpe <logang@...tatee.com>,
 Yishai Hadas <yishaih@...dia.com>,
 Shameer Kolothum <shameerali.kolothum.thodi@...wei.com>,
 Kevin Tian <kevin.tian@...el.com>,
 Alex Williamson <alex.williamson@...hat.com>,
 Jérôme Glisse <jglisse@...hat.com>,
 Andrew Morton <akpm@...ux-foundation.org>, linux-doc@...r.kernel.org,
 linux-kernel@...r.kernel.org, linux-block@...r.kernel.org,
 linux-rdma@...r.kernel.org, iommu@...ts.linux.dev,
 linux-nvme@...ts.infradead.org, linux-pci@...r.kernel.org,
 kvm@...r.kernel.org, linux-mm@...ck.org,
 Niklas Schnelle <schnelle@...ux.ibm.com>,
 Chuck Lever <chuck.lever@...cle.com>, Luis Chamberlain <mcgrof@...nel.org>,
 Matthew Wilcox <willy@...radead.org>, Dan Williams
 <dan.j.williams@...el.com>, Kanchan Joshi <joshi.k@...sung.com>,
 Chaitanya Kulkarni <kch@...dia.com>, Leon Romanovsky <leonro@...dia.com>
Subject: Re: [PATCH v10 02/24] dma-mapping: move the PCI P2PDMA mapping
 helpers to pci-p2pdma.h

On 4/28/25 17:22, Leon Romanovsky wrote:
> From: Christoph Hellwig<hch@....de>
> 
> To support the upcoming non-scatterlist mapping helpers, we need to go
> back to have them called outside of the DMA API.  Thus move them out of
> dma-map-ops.h, which is only for DMA API implementations to pci-p2pdma.h,
> which is for driver use.
> 
> Note that the core helper is still not exported as the mapping is
> expected to be done only by very highlevel subsystem code at least for
> now.
> 
> Signed-off-by: Christoph Hellwig<hch@....de>
> Reviewed-by: Logan Gunthorpe<logang@...tatee.com>
> Acked-by: Bjorn Helgaas<bhelgaas@...gle.com>
> Tested-by: Jens Axboe<axboe@...nel.dk>
> Reviewed-by: Luis Chamberlain<mcgrof@...nel.org>
> Signed-off-by: Leon Romanovsky<leonro@...dia.com>

Reviewed-by: Lu Baolu <baolu.lu@...ux.intel.com>