From: Christoph Hellwig <hch@lst.de>
To: Robin Murphy <robin.murphy@arm.com>
Cc: Leon Romanovsky <leon@kernel.org>, Christoph Hellwig <hch@lst.de>,
Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>,
Marek Szyprowski <m.szyprowski@samsung.com>,
Jason Gunthorpe <jgg@nvidia.com>,
Leon Romanovsky <leonro@nvidia.com>,
linux-kernel@vger.kernel.org, iommu@lists.linux.dev
Subject: Re: [PATCH 2/2] dma: Add IOMMU static calls with clear default ops
Date: Fri, 12 Jul 2024 06:49:37 +0200 [thread overview]
Message-ID: <20240712044937.GA4709@lst.de> (raw)
In-Reply-To: <28309b7f-9809-452f-95fe-3448c15bdf1b@arm.com>
On Thu, Jul 11, 2024 at 07:23:20PM +0100, Robin Murphy wrote:
> If so, I'd much rather see this done properly, i.e. hook everything up
> similarly to dma-direct and be able to drop CONFIG_DMA_OPS for "modern"
> dma-direct/iommu-dma architectures entirely.
Yes. That is much better than doing hacks based on missing ops.
Note that the media subsystems just added another abuse of dma_map_ops
in drivers/ in addition to the existing vdpa one that we'll need to
kill again to fully get rid of dma_map_ops for common setups (in
addition to merging swiotlb-xen into main swiotlb finally).
next prev parent reply other threads:[~2024-07-12 4:49 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-11 10:38 [PATCH 1/2] dma: call unconditionally to unmap_page and unmap_sg callbacks Leon Romanovsky
2024-07-11 10:38 ` [PATCH 2/2] dma: Add IOMMU static calls with clear default ops Leon Romanovsky
2024-07-11 17:27 ` Leon Romanovsky
2024-07-11 18:17 ` Easwar Hariharan
2024-07-11 18:45 ` Leon Romanovsky
2024-07-11 18:23 ` Robin Murphy
2024-07-11 18:57 ` Leon Romanovsky
2024-07-11 20:08 ` Robin Murphy
2024-07-12 5:50 ` Leon Romanovsky
2024-07-12 14:21 ` Robin Murphy
2024-07-13 5:18 ` Christoph Hellwig
2024-07-13 9:32 ` Leon Romanovsky
2024-07-12 4:49 ` Christoph Hellwig [this message]
2024-07-12 6:02 ` Leon Romanovsky
2024-07-12 20:51 ` Easwar Hariharan
2024-07-13 9:30 ` Leon Romanovsky
2024-07-11 18:02 ` [PATCH 1/2] dma: call unconditionally to unmap_page and unmap_sg callbacks Robin Murphy
2024-07-12 5:47 ` Leon Romanovsky
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