From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id CF19E4896F; Sat, 18 Oct 2025 17:55:15 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 4AAA74021E; Sat, 18 Oct 2025 17:55:15 +0200 (CEST) Received: from fout-b4-smtp.messagingengine.com (fout-b4-smtp.messagingengine.com [202.12.124.147]) by mails.dpdk.org (Postfix) with ESMTP id 92F2D4013F for ; Sat, 18 Oct 2025 17:55:13 +0200 (CEST) Received: from phl-compute-06.internal (phl-compute-06.internal [10.202.2.46]) by mailfout.stl.internal (Postfix) with ESMTP id 857ED1D0008B; Sat, 18 Oct 2025 11:55:12 -0400 (EDT) Received: from phl-mailfrontend-01 ([10.202.2.162]) by phl-compute-06.internal (MEProxy); Sat, 18 Oct 2025 11:55:12 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=monjalon.net; h= cc:cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to; s=fm2; t=1760802912; x=1760889312; bh=KEjvbc9s4e9HSGjgSxPHRO5FFiZ44Gk8wE2VNWF0MAE=; b= buprsIcXFc51Zu5JoGx/psibeMZAzU1X1uomM8ufJELaxaOR9nxLFrsobJ6ZPG/I ng0H/dKYrSO8MxZXfnhMgIOTvLn41qTx4UE1p09q9AUUJ1i9KtxtlKQtEB6bWbU5 UglVTQdP7uzJI02ZBgUa7RxNnxjodPdstis8UK3yoY4FWIowhn1m1NEUm7vcUwSz YwJxa45Rrat6mN9VIIBqAfgUkfa9NqwoG18o5BPEYfPomhTQL7BBAed/bWrJZMiv 38/mGuytImYQy2w3qvE4JqVcgaXUVpKzFCNN7YfegHs1Blq10avP1bKXdQHnD4c3 yv1o2DLOrz+FrVXndRxNiA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm2; t=1760802912; x= 1760889312; bh=KEjvbc9s4e9HSGjgSxPHRO5FFiZ44Gk8wE2VNWF0MAE=; b=r P9UQ5VE9VoMstLuv6m+dcI9fUz8MjzJk1io/YZcPwSBMU4U77wSqBVyGO9kpIfYp bhcqFq7l0UKGwO3kwKH/dJSAqclq45Zru+s3nnoVovHpcJlUSEdslKWMLCxRw3sp m+V8FutE5GrBH00aha/bBKUWbGuUY8TR8JZxYJad4j9ax63Nu0HAKPhHrGUTsJ9z +ifTNu7jNkqRxvgDgIlE4emQRMfV4lKAGu39J9QP75GnmKXtfuYuIQUeGILzhQR7 VEr92aYJ3yYl7cLP88McRoCOssdYGkbg+LrqP/RNTNBdsuYQXi3gyz/s/P79yV9J sM5AU10ohwcqVT8Wmve4w== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeeffedrtdeggddufedvgeeiucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertd dttdejnecuhfhrohhmpefvhhhomhgrshcuofhonhhjrghlohhnuceothhhohhmrghssehm ohhnjhgrlhhonhdrnhgvtheqnecuggftrfgrthhtvghrnhepjeduveehieevuddutdevff fgtdegkeeuveejffejgedtgeegkefgvdeugfefkeejnecuvehluhhsthgvrhfuihiivgep tdenucfrrghrrghmpehmrghilhhfrhhomhepthhhohhmrghssehmohhnjhgrlhhonhdrnh gvthdpnhgspghrtghpthhtohepkedpmhhouggvpehsmhhtphhouhhtpdhrtghpthhtohep vhgrthhtuhhnuhhruhesmhgrrhhvvghllhdrtghomhdprhgtphhtthhopeguvghvseguph gukhdrohhrghdprhgtphhtthhopegsrhhutggvrdhrihgthhgrrhgushhonhesihhnthgv lhdrtghomhdprhgtphhtthhopegrnhgrthholhihrdgsuhhrrghkohhvsehinhhtvghlrd gtohhmpdhrtghpthhtohepkhgvvhhinhdrlhgrrghtiiesihhnthgvlhdrtghomhdprhgt phhtthhopehjvghrihhnjhesmhgrrhhvvghllhdrtghomhdprhgtphhtthhopehsthgvph hhvghnsehnvghtfihorhhkphhluhhmsggvrhdrohhrghdprhgtphhtthhopehfvghnghgt hhgvnhhgfigvnheshhhurgifvghirdgtohhm X-ME-Proxy: Feedback-ID: i47234305:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Sat, 18 Oct 2025 11:55:10 -0400 (EDT) From: Thomas Monjalon To: Vamsi Krishna Cc: dev@dpdk.org, bruce.richardson@intel.com, anatoly.burakov@intel.com, kevin.laatz@intel.com, jerinj@marvell.com, stephen@networkplumber.org, fengchengwen Subject: Re: [PATCH v4 1/1] lib/dma: introduce inter-process and inter-OS DMA Date: Sat, 18 Oct 2025 17:55:09 +0200 Message-ID: <5076338.MSiuQNM8U4@thomas> In-Reply-To: References: <20251013042136.1727540-1-vattunuru@marvell.com> <20251017054210.3105218-1-vattunuru@marvell.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org > > Modern DMA hardware supports data transfers between multiple DMA > > devices, facilitating data communication across isolated domains, > > containers, or operating systems. These DMA transfers function as > > standard memory-to-memory operations, but with source or destination > > addresses residing in different process or OS address space. The > > exchange of these addresses between processes is handled through > > private driver mechanism, which are beyond the scope of this > > specification change. > > > > This commit introduces new capability flags to advertise driver support > > for inter-process and inter-OS domain DMA transfers. It adds a mechanism > > to specify source and destination handlers via the vchan configuration. > > Until standardized control-plane APIs are defined for various categories > > of DMA devices, these handler details can be exchanged through private > > driver mechanisms. > > > > Signed-off-by: Vamsi Attunuru > Acked-by: Chengwen Feng Added release notes and applied, thanks.