From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 4B3FC21E3BF; Wed, 16 Oct 2024 04:23:36 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.137.202.133 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729052617; cv=none; b=dEeRE+bQJaRy0SvPDfcTDY46ROklFXWrlrouKizLzisbtg33iYDPBD0PwWNJQKS3xS7ujqodhtJ/nFh3ICuHY+9BXGAnuXGolWNxCXTNlsQIZXFu7dP6RDIFO8KJQCf7jlCZEFvn3fKklAvztMY0y437wcLhgVTmoA7BRjLcu+s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729052617; c=relaxed/simple; bh=3iDmzb+897ogEaNn30FRct+QBNc9fQ+RkDxReSKGAKo=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=bYeCTkwPT9NQHIdy5pMQKe0pja4CV6wTbcfSe/euTlVhDHNa2SRU9hdtD86Wpds+6cXnnH/1s+b+EsGjsH/AtigQmjVqLLugQips19rEFTAR/vrmrHyBxxwd3Nxgmqk1s3xxAO9RenJUxcp1KX2d6ETGRp+bAJOVGgalO/R3br8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=XMrPYYN4; arc=none smtp.client-ip=198.137.202.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bombadil.srs.infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="XMrPYYN4" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=wcUcuFqqucU0QfpmucbUVnYkn1DlkvM9RvqFMIVSmEk=; b=XMrPYYN4JlgEsNYp5enHSSCYqc slPqPTHsUImSqs9uZ8tuYyXhELrUaS6vuT2LbM8FULVnhDRDoPSOxRbLnKrqxJfsCvxchsxh/xfob 0jxLgRHk9r1FX9mmer/+2Ucyl4c1oTrRKxbH/As2LplkV5Gjew/zJSSu5OFowW/Weiqt76vsqH2A9 6MbrkgNsbFAn+Tporc1RfAb4/ILFpusmDuVBiN5pgm9X1RX+ynSMCRzo+Q+/AfUBZdZWUByjngnW2 ei6oY5Aqp6vTzzCz6nfRU2O8SbkuURienIz9CqtuMQy7BprJJHjiy4/VtFMpLlLWkZstEG8ckU9I1 o4iGa1WQ==; Received: from hch by bombadil.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1t0vZP-0000000ASzs-0jKN; Wed, 16 Oct 2024 04:23:35 +0000 Date: Tue, 15 Oct 2024 21:23:35 -0700 From: Christoph Hellwig To: Yonatan Maman Cc: nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-rdma@vger.kernel.org, linux-mm@kvack.org, herbst@redhat.com, lyude@redhat.com, dakr@redhat.com, airlied@gmail.com, simona@ffwll.ch, jgg@ziepe.ca, leon@kernel.org, jglisse@redhat.com, akpm@linux-foundation.org, dri-devel@lists.freedesktop.org, apopple@nvidia.com, bskeggs@nvidia.com Subject: Re: [PATCH v1 0/4] GPU Direct RDMA (P2P DMA) for Device Private Pages Message-ID: References: <20241015152348.3055360-1-ymaman@nvidia.com> Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241015152348.3055360-1-ymaman@nvidia.com> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Tue, Oct 15, 2024 at 06:23:44PM +0300, Yonatan Maman wrote: > From: Yonatan Maman > > This patch series aims to enable Peer-to-Peer (P2P) DMA access in > GPU-centric applications that utilize RDMA and private device pages. This > enhancement is crucial for minimizing data transfer overhead by allowing > the GPU to directly expose device private page data to devices such as > NICs, eliminating the need to traverse system RAM, which is the native > method for exposing device private page data. Please tone down your marketing language and explain your factual changes. If you make performance claims back them by numbers.