From: "Christian König" <christian.koenig@amd.com>
To: Jason Gunthorpe <jgg@nvidia.com>
Cc: "Vivek Kasireddy" <vivek.kasireddy@intel.com>,
dri-devel@lists.freedesktop.org, intel-xe@lists.freedesktop.org,
linux-media@vger.kernel.org, linaro-mm-sig@lists.linaro.org,
"Sumit Semwal" <sumit.semwal@linaro.org>,
"Thomas Hellström" <thomas.hellstrom@linux.intel.com>,
"Simona Vetter" <simona.vetter@ffwll.ch>
Subject: Re: [RFC 1/8] dma-buf: Add support for map/unmap APIs for interconnects
Date: Tue, 28 Oct 2025 15:14:32 +0100 [thread overview]
Message-ID: <dcc1265b-be10-4a54-8eda-2f7be0e70371@amd.com> (raw)
In-Reply-To: <20251028140548.GJ1018328@nvidia.com>
On 10/28/25 15:05, Jason Gunthorpe wrote:
> On Tue, Oct 28, 2025 at 02:58:57PM +0100, Christian König wrote:
>
>> Some kind of iterator like interface would be preferred where you
>> have first and next callbacks.
>
> That's what I thought you were asking for..
>
> Are you sure that is what you want? It will make mapping of fragments
> alot slower..
Well the first function should have a start parameter and both return offset and length.
Alternatively we could come up with some container, but yeah then we would need to convert into the container format again.
>
>> Additional to that I'm not sure if the "interconnect" is a good
>> naming, essentially we want to use the new mapping functions to
>> replace the sg_table as well.
>
> 'mapping type' ?
+1
Christian.>
> Jason
next prev parent reply other threads:[~2025-10-28 14:14 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-10-14 7:08 [RFC 0/8] dma-buf: Add support for mapping dmabufs via interconnects Vivek Kasireddy
2025-10-14 7:08 ` [RFC 1/8] dma-buf: Add support for map/unmap APIs for interconnects Vivek Kasireddy
2025-10-20 9:34 ` Thomas Hellström
2025-10-21 5:45 ` Kasireddy, Vivek
2025-10-28 13:58 ` Christian König
2025-10-28 14:05 ` Jason Gunthorpe
2025-10-28 14:14 ` Christian König [this message]
2025-10-28 14:44 ` Jason Gunthorpe
2025-10-14 7:08 ` [RFC 2/8] dma-buf: Add a helper to match interconnects between exporter/importer Vivek Kasireddy
2025-10-17 15:58 ` Kasireddy, Vivek
2025-10-14 7:08 ` [RFC 3/8] dma-buf: Add support for IOV interconnect Vivek Kasireddy
2025-10-14 7:08 ` [RFC 4/8] vfio/pci/dmabuf: " Vivek Kasireddy
2025-10-14 7:08 ` [RFC 5/8] drm/xe/dma_buf: " Vivek Kasireddy
2025-10-14 7:08 ` [RFC 6/8] drm/xe/pf: Add a helper function to get a VF's backing object in LMEM Vivek Kasireddy
2025-10-14 7:08 ` [RFC 7/8] drm/xe/bo: Create new dma_addr array for dmabuf BOs associated with VFs Vivek Kasireddy
2025-10-14 7:08 ` [RFC 8/8] drm/xe/pt: Add an additional check for dmabuf BOs while doing bind Vivek Kasireddy
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