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smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=Lguxzf8Z; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AA99A606A319; Tue, 20 Oct 2026 10:25:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=Lguxzf8Z Received: by smtp.kernel.org (Postfix) with ESMTPSA id A819C1F000C4; Tue, 20 Oct 2026 10:25:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1792491915; bh=GmgvE7biHiDHJAgyZpIMu3iqBMY4bU18LDyGcOQMk4g=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=Lguxzf8ZkSVPiujCO3yHX9RyjwaBzTk20uTEzjFrJiN0TZqi4fB+bCu0Y04iDSvHw dyo+dunY5RFPtvt4z5gbQgc5c31+1wikH2oM+R2A8/9CmcWOCa/DujSVSn8P1Jiy5O IkMGGDOk8VQqJlgDFCMIgIr1GYaj0gVoOQgJSBM8pOf5XItP41xBc0W6hhUtqbWfKS GmYr+B3T+hLhpI4/Q+wr8TYB8Q9ErStEBUwgL3YlmwntUJUiBnNXnidK/nAcYrgCvT E3e8iZ7vB5loeWynl9dd7Vq2QfVKRPC/ECeBnyG1PUM/lSztdK1tJB3H2dRMTvg+ed fC7b+st9MDTpQ== Date: Tue, 20 Oct 2026 13:25:10 +0300 From: Leon Romanovsky To: Bjorn Helgaas Cc: Bjorn Helgaas , Logan Gunthorpe , Jason Gunthorpe , Joerg Roedel , Will Deacon , Robin Murphy , Christian =?iso-8859-1?Q?K=F6nig?= , Thomas =?iso-8859-1?Q?Hellstr=F6m?= , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, iommu@lists.linux.dev, Tushar Dave , linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org, linux-rdma@vger.kernel.org, kvm@vger.kernel.org, Chaitanya Kulkarni , Greg Kroah-Hartman , Jens Axboe , Alex Williamson , Ankit Agrawal , Jonathan Corbet , Shuah Khan , Randy Dunlap , Sumit Semwal Subject: Re: [PATCH v11 00/19] PCI/P2PDMA: Route peer-to-peer DMA by TLP class Message-ID: <20261020102510.GL64621@unreal> References: <20261019183537.GI64621@unreal> <20261019191845.GA2219127@bhelgaas> X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20261019191845.GA2219127@bhelgaas> On Mon, Oct 19, 2026 at 02:18:45PM -0500, Bjorn Helgaas wrote: > On Mon, Oct 19, 2026 at 09:35:37PM +0300, Leon Romanovsky wrote: > > On Wed, Oct 14, 2026 at 05:49:53PM +0300, Leon Romanovsky wrote: > > > On Wed, Oct 14, 2026, at 16:23, Bjorn Helgaas wrote: > > > > On Wed, Oct 14, 2026 at 09:53:47AM +0300, Leon Romanovsky wrote: > > > >> On Tue, Oct 13, 2026 at 05:25:08PM +0300, Leon Romanovsky wrote: > > > >> > PCI P2PDMA applies Request and Completion Redirect throughout both paths. > > > >> > This misclassifies asymmetric and nested switches, and reports one answer > > > >> > for every kind of TLP. > > > >> > > > > >> > Three ACS controls act on TLP attributes the Requester chooses rather > > > >> > than on the topology: Translation Blocking and Direct Translated P2P act on > > > >> > a Request's Address Type, and Completion Redirect skips Completions carrying > > > >> > Relaxed Ordering. > > > >> > > > > >> > Evaluate each direction at the path divergence, decide every class from the > > > >> > one walk, and treat a client with ATS enabled as translating unless its > > > >> > driver declares per-mapping ATS. > > > >> > > > > >> > This completes the P2PDMA side; dma-buf and mlx5 follow separately. > > > >> > > > > >> > Signed-off-by: Leon Romanovsky > > > >> > --- > > > >> > Changes in v11: > > > >> > > > >> > > > >> Bjorn, > > > >> > > > >> Could you please save me from the AI-bot attack? Every rebase seems to > > > >> uncover another bizarre pre-existing issue. It never ends. > > > > > > > > Can you elaborate? I'm not sure what you'd like me to do here. I > > > > don't control the Sashiko reviews, and I thought Sashiko was recently > > > > changed to put pre-existing issues in a database but not in the email > > > > responses. > > > > > > AI reviews are not deterministic and every resubmission gives us slightly different result, which is in this phase of submission is full of hallucinated flows not applicable to the upstream. > > > > > > In addition to upstream Sashiko, i run everything through local one with slightly better models which hallucinating even more. > > > > > > I would ask you to merge the series so it gets real exposure in addition to my kunit and specific hw setup. > > > > Bjorn, > > > > We're in the merge window now, so I don't expect such a large series to be > > merged. What about the next cycle? Should I send v12 after -rc1, or wait? > > After -rc1 would be good. Thanks