From: Christoph Hellwig <hch@lst.de>
To: Leon Romanovsky <leon@kernel.org>
Cc: "Christoph Hellwig" <hch@lst.de>,
"Robin Murphy" <robin.murphy@arm.com>,
"Jens Axboe" <axboe@kernel.dk>, "Jason Gunthorpe" <jgg@ziepe.ca>,
"Joerg Roedel" <joro@8bytes.org>, "Will Deacon" <will@kernel.org>,
"Keith Busch" <kbusch@kernel.org>,
"Zeng, Oak" <oak.zeng@intel.com>,
"Chaitanya Kulkarni" <kch@nvidia.com>,
"Sagi Grimberg" <sagi@grimberg.me>,
"Bjorn Helgaas" <bhelgaas@google.com>,
"Logan Gunthorpe" <logang@deltatee.com>,
"Yishai Hadas" <yishaih@nvidia.com>,
"Shameer Kolothum" <shameerali.kolothum.thodi@huawei.com>,
"Kevin Tian" <kevin.tian@intel.com>,
"Alex Williamson" <alex.williamson@redhat.com>,
"Marek Szyprowski" <m.szyprowski@samsung.com>,
"Jérôme Glisse" <jglisse@redhat.com>,
"Andrew Morton" <akpm@linux-foundation.org>,
linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-rdma@vger.kernel.org, iommu@lists.linux.dev,
linux-nvme@lists.infradead.org, linux-pci@vger.kernel.org,
kvm@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [RFC PATCH v1 18/18] nvme-pci: use new dma API
Date: Sat, 6 Jul 2024 08:08:18 +0200 [thread overview]
Message-ID: <20240706060818.GA13470@lst.de> (raw)
In-Reply-To: <20240705184846.GF95824@unreal>
On Fri, Jul 05, 2024 at 09:48:46PM +0300, Leon Romanovsky wrote:
> In that case the flow is dma_map_sg()->iommu_dma_map_sg()->dev_use_sg_swiotlb().
Even for that you'll still need to check the first and last entry
for being kmalloc misaligned if we assume that all middle entries are
aligned (which for NVMe they have to, but we're probably better off
figuring out a way to enforce that).
next prev parent reply other threads:[~2024-07-06 6:08 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-02 9:09 [RFC PATCH v1 00/18] Provide a new two step DMA API mapping API Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 01/18] dma-mapping: query DMA memory type Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 02/18] dma-mapping: provide an interface to allocate IOVA Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 03/18] dma-mapping: check if IOVA can be used Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 04/18] dma-mapping: implement link range API Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 05/18] mm/hmm: let users to tag specific PFN with DMA mapped bit Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 06/18] dma-mapping: provide callbacks to link/unlink HMM PFNs to specific IOVA Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 07/18] iommu/dma: Provide an interface to allow preallocate IOVA Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 08/18] iommu/dma: Implement link/unlink ranges callbacks Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 09/18] RDMA/umem: Preallocate and cache IOVA for UMEM ODP Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 10/18] RDMA/umem: Store ODP access mask information in PFN Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 11/18] RDMA/core: Separate DMA mapping to caching IOVA and page linkage Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 12/18] RDMA/umem: Prevent UMEM ODP creation with SWIOTLB Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 13/18] vfio/mlx5: Explicitly use number of pages instead of allocated length Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 14/18] vfio/mlx5: Rewrite create mkey flow to allow better code reuse Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 15/18] vfio/mlx5: Explicitly store page list Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 16/18] vfio/mlx5: Convert vfio to use DMA link API Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 17/18] block: export helper to get segment max size Leon Romanovsky
2024-07-02 9:09 ` [RFC PATCH v1 18/18] nvme-pci: use new dma API Leon Romanovsky
2024-07-04 15:23 ` Robin Murphy
2024-07-04 17:16 ` Leon Romanovsky
2024-07-05 5:58 ` Christoph Hellwig
2024-07-05 18:48 ` Leon Romanovsky
2024-07-06 6:08 ` Christoph Hellwig [this message]
2024-07-03 5:42 ` [RFC PATCH v1 00/18] Provide a new two step DMA API mapping API Christoph Hellwig
2024-07-03 10:42 ` Zhu Yanjun
2024-07-03 10:52 ` Leon Romanovsky
2024-07-03 14:35 ` Christoph Hellwig
2024-07-03 15:51 ` Leon Romanovsky
2024-07-04 7:48 ` Christoph Hellwig
2024-07-04 13:18 ` Leon Romanovsky
2024-07-05 6:00 ` Christoph Hellwig
2024-07-08 16:52 ` Jason Gunthorpe
2024-07-09 6:17 ` Christoph Hellwig
2024-07-09 18:53 ` Jason Gunthorpe
2024-07-10 6:27 ` Christoph Hellwig
2024-07-11 23:21 ` Jason Gunthorpe
2024-07-05 22:53 ` Chaitanya Kulkarni
2024-07-06 6:26 ` Christoph Hellwig
2024-07-07 9:16 ` Leon Romanovsky
2024-07-07 12:45 ` Leon Romanovsky
2024-07-05 6:39 ` Christoph Hellwig
2024-07-07 9:45 ` Leon Romanovsky
2024-07-08 23:57 ` Jason Gunthorpe
2024-07-09 6:20 ` Christoph Hellwig
2024-07-09 19:03 ` Jason Gunthorpe
2024-07-10 6:22 ` Christoph Hellwig
2024-07-11 23:29 ` Jason Gunthorpe
2024-07-12 4:54 ` Christoph Hellwig
2024-07-12 12:42 ` Jason Gunthorpe
2024-07-13 5:24 ` Christoph Hellwig
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