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 2D6411DDC3C; Thu, 17 Oct 2024 13:12:57 +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=1729170779; cv=none; b=s5a3kRGQiwsFktgWG+p+EG3NV1zT0wdQVg8LcLtMqhu2aM6CqQto3r7RyOI8xlIrIXazw7SDSqFFeRgFarJWNTaYHz4457DFatzyZdTLviKMQRwpHMGv1w5ryB1E0g5WgyGBFtyQ9gGAhuSE23avjYWfy5+bwcwb2incno7Rnq0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729170779; c=relaxed/simple; bh=YmPKHblmykCYSpTXM4GbHkuG2YVDdbnNCpiO2NiFhRY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=plKf46HW3m6pWRIyAGxnDKq6fZG2AGYzojcwBZCQuPOAoX9P82JDJElHZ5MlJBfrazks/S0hNQ21dgD8WcdOjFaQPSDqVMc5SP++XfbYqIGuUwuyCfxF4Ufjwe/ESUZZAzD9AFBNBxr2O/OH7kZ/r62itqfxr6wtRe8/XC3mGyM= 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=f9E1BCSU; 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="f9E1BCSU" 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=YmPKHblmykCYSpTXM4GbHkuG2YVDdbnNCpiO2NiFhRY=; b=f9E1BCSULnSugS1EghEBwHw0l6 zQ3Gk6pTRx0UFUwvhS7/QVjlX0Hf2PrR3WtDAuc0WJtV5BrIMKHFQ6poJj068iXE5HPhablrFUo67 MGkkhQ8qf0FJ6PLrTdLSBf5j2R3pEgurLlaVeDox3ljUsYGxbDYygYPWcLv+25D+sELMvGtdjquA0 bZd/APhOUz3Pby05vHrYJODgTtxhpASNztVy/ApfHKosY+NMBHrlC6cx7rXcM7lZToV3hgRBrTs+I TZ95IZLqPyXabFZg1Oq+H1xdllas7yBhvJ92uhWJBHxdyeUyBYfn1Q69UDb+LevK1JuB1EX6oSp9t Mzge6k3Q==; Received: from hch by bombadil.infradead.org with local (Exim 4.98 #2 (Red Hat Linux)) id 1t1QJD-0000000EtT8-3yia; Thu, 17 Oct 2024 13:12:55 +0000 Date: Thu, 17 Oct 2024 06:12:55 -0700 From: Christoph Hellwig To: Jason Gunthorpe Cc: Christoph Hellwig , Yonatan Maman , 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, leon@kernel.org, jglisse@redhat.com, akpm@linux-foundation.org, dri-devel@lists.freedesktop.org, apopple@nvidia.com, bskeggs@nvidia.com, Gal Shalom Subject: Re: [PATCH v1 1/4] mm/hmm: HMM API for P2P DMA to device zone pages Message-ID: References: <20241015152348.3055360-1-ymaman@nvidia.com> <20241015152348.3055360-2-ymaman@nvidia.com> <20241016154428.GD4020792@ziepe.ca> <20241016174445.GF4020792@ziepe.ca> <20241017130539.GA897978@ziepe.ca> 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: <20241017130539.GA897978@ziepe.ca> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html On Thu, Oct 17, 2024 at 10:05:39AM -0300, Jason Gunthorpe wrote: > Broadly I think whatever flow NVMe uses for P2P will apply to ODP as > well. ODP is a lot simpler than NVMe for P2P actually :(