linux-kernel - Re: [PATCH v4 11/16] dma-mapping: export new dma_*map

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Message-ID: <20250828160110.GJ9469@nvidia.com>
Date: Thu, 28 Aug 2025 13:01:10 -0300
From: Jason Gunthorpe <jgg@...dia.com>
To: Leon Romanovsky <leon@...nel.org>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>,
	Leon Romanovsky <leonro@...dia.com>,
	Abdiel Janulgue <abdiel.janulgue@...il.com>,
	Alexander Potapenko <glider@...gle.com>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Hellwig <hch@....de>, Danilo Krummrich <dakr@...nel.org>,
	iommu@...ts.linux.dev, Jason Wang <jasowang@...hat.com>,
	Jens Axboe <axboe@...nel.dk>, Joerg Roedel <joro@...tes.org>,
	Jonathan Corbet <corbet@....net>, Juergen Gross <jgross@...e.com>,
	kasan-dev@...glegroups.com, Keith Busch <kbusch@...nel.org>,
	linux-block@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	linux-nvme@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org,
	linux-trace-kernel@...r.kernel.org,
	Madhavan Srinivasan <maddy@...ux.ibm.com>,
	Masami Hiramatsu <mhiramat@...nel.org>,
	Michael Ellerman <mpe@...erman.id.au>,
	"Michael S. Tsirkin" <mst@...hat.com>,
	Miguel Ojeda <ojeda@...nel.org>,
	Robin Murphy <robin.murphy@....com>, rust-for-linux@...r.kernel.org,
	Sagi Grimberg <sagi@...mberg.me>,
	Stefano Stabellini <sstabellini@...nel.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	virtualization@...ts.linux.dev, Will Deacon <will@...nel.org>,
	xen-devel@...ts.xenproject.org
Subject: Re: [PATCH v4 11/16] dma-mapping: export new dma_*map_phys()
 interface

On Tue, Aug 19, 2025 at 08:36:55PM +0300, Leon Romanovsky wrote:
> The old page-based API is preserved in mapping.c to ensure that existing
> code won't be affected by changing EXPORT_SYMBOL to EXPORT_SYMBOL_GPL
> variant for dma_*map_phys().
> 
> Signed-off-by: Leon Romanovsky <leonro@...dia.com>
> ---
>  drivers/iommu/dma-iommu.c   | 14 --------
>  include/linux/dma-direct.h  |  2 --
>  include/linux/dma-mapping.h | 13 +++++++
>  include/linux/iommu-dma.h   |  4 ---
>  include/trace/events/dma.h  |  2 --
>  kernel/dma/debug.c          | 43 -----------------------
>  kernel/dma/debug.h          | 21 -----------
>  kernel/dma/direct.c         | 16 ---------
>  kernel/dma/mapping.c        | 69 ++++++++++++++++++++-----------------
>  9 files changed, 50 insertions(+), 134 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason