From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 955B93D522B; Thu, 5 Feb 2026 12:58:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770296314; cv=none; b=cx3Tzvqwd7VaJnDW8iFTFG2eUdk+EaxTh9+0+t7Ipff9Orr0l36CApQWERhi8GmiMNMOWx1PQUIejCDEAFv7nSd+TmjMvHKtoX4gal6v12zp0tpjNE1wJc++JP/P+XT0V0ypAYEBx56AVwUgK7BIqDEvTQ4zd76o1NmxhhlzJoQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770296314; c=relaxed/simple; bh=S2s8/bMyKmVdiSDHAWjHlKyaaSVCT0Yx1Zo2MXvJ1WI=; h=From:To:Cc:In-Reply-To:References:Subject:Message-Id:Date: MIME-Version:Content-Type; b=tWvF+qBpiYSK+LkJVv2BlxAasgAZTk6CVEcnwA0eQ6jMViiT4G/LbvLBP2BgkD1LyrkHtyfL10IFGFyqkCDuVCcPALj1HluqPZ80F7IBR4Qoma5BcL7pUgIYhE1FyAT8m4Se57agbrcEIJWDnkFvN2xCHydA5mL3Sout/gR82SQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=mkkng4ci; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="mkkng4ci" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 184FAC4CEF7; Thu, 5 Feb 2026 12:58:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770296314; bh=S2s8/bMyKmVdiSDHAWjHlKyaaSVCT0Yx1Zo2MXvJ1WI=; h=From:To:Cc:In-Reply-To:References:Subject:Date:From; b=mkkng4ciZVY11wIeOZkrjjS1eW04HepM3zK7vDKNRh2Gzrz5ZYTA8oNpDipCVaBt6 Zju30QUlAMefAPOOjTGaXXLVUV1j3QM0oc/xRbw5x0XTqwH3O14ddftpyKslwxOuJF OcB71+Bg3NLhejGFSqcv7La1FyMwzYLXBRiHjlMGoDhwM1PoGWqV82Mhxdku5fQFE2 2UhjTPRQ/72BvjUm3jWYNQcm6KAEIiosAvAhIiIB1Phz+pdAL8MGAyu1F4CrQ2hC6+ P6/bK3xP8hOEVKWZ28iCgV7/jIF+CMBcfVyIXI9aTucOTbYl1TK+nrvLj2dWceXko/ 7twWrocbp3tEg== From: Leon Romanovsky To: Jason Gunthorpe , Sumit Semwal , =?utf-8?q?Christian_K=C3=B6nig?= , Edward Srouji Cc: linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, Yishai Hadas In-Reply-To: <20260201-dmabuf-export-v3-0-da238b614fe3@nvidia.com> References: <20260201-dmabuf-export-v3-0-da238b614fe3@nvidia.com> Subject: Re: [PATCH rdma-next v3 0/3] RDMA: Add support for exporting dma-buf file descriptors Message-Id: <177029631173.955437.5307722032449149162.b4-ty@kernel.org> Date: Thu, 05 Feb 2026 07:58:31 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.15-dev-47773 On Sun, 01 Feb 2026 16:34:03 +0200, Edward Srouji wrote: > This patch series introduces dma-buf export support for RDMA/InfiniBand > devices, enabling userspace applications to export RDMA PCI-backed > memory regions (such as device memory or mlx5 UAR pages) as dma-buf file > descriptors. > > This allows PCI device memory to be shared with other kernel subsystems > (e.g., graphics or media) or between userspace processes, via the > standard dma-buf interface, avoiding unnecessary copies and enabling > efficient peer-to-peer (P2P) DMA transfers. See [1] for background on > dma-buf. > > [...] Applied, thanks! [1/3] RDMA/uverbs: Support external FD uobjects https://git.kernel.org/rdma/rdma/c/6b848074a32078 [2/3] RDMA/uverbs: Add DMABUF object type and operations https://git.kernel.org/rdma/rdma/c/e6738fe6cad448 [3/3] RDMA/mlx5: Implement DMABUF export ops https://git.kernel.org/rdma/rdma/c/992a14bb2150a1 Best regards, -- Leon Romanovsky