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 3CC9D39449F; Mon, 16 Mar 2026 12:06:04 +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=1773662765; cv=none; b=gWEd3hoOFmfKvFlqKcH+NMQ/knR/NykblOUKjSjsL4aXL06er3YBkdza0VV5lvmlUNjLF/JcnDIREPJKUVPrvZfpVZLvwQC0ko0wPw8ZwN8T15uD6NIpnCxjcKh4FPV99JitgQKNUwcleFJndzVmNjVXIKxHMEgG2uXOSwZegPs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773662765; c=relaxed/simple; bh=ZRtAZTNtj21DA+dLUkzrLS06oD7H1G2/XVPogljiumQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=IUunjyQvPFIzi2LWMl8CoTErP3CNu7VnQWNvTl9qyN5l9zC5khBKXQDrWosBQ547aWGD9fYjEJSP1G+Emxx8byMMygiEOEWtaC707yo7IkS14eQ98dhsmJnyaW0mpvAhSBJbHlzDnBDiKkNQqKTL35WHXLYrPKzkMl0I4Cow5s0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=uazIWo21; 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="uazIWo21" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7B739C2BCB3; Mon, 16 Mar 2026 12:06:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773662764; bh=ZRtAZTNtj21DA+dLUkzrLS06oD7H1G2/XVPogljiumQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=uazIWo21z9Q0Nfxh7k8vQaBdJR/cz4jSxAND0XUGo3yg9ZQk+kntEV+X9wuWm11o/ tbbVwc6e1RsyBfJk9G3opjWSkU2LqwydeVvfP+P39spZkU80/E7KsbPX9xZtRPW3b5 cyqUE0LhhcI/d/6xPTp+VPmuvrwas9Y02cKWEuSqNjfpFgZp2J9ON4Qti2IDRdOj7E C1jzgwW8U+YqqViqu7ap8gJlJ65eQ5A9hWrFTnPD8IaV+MhN5CQmMrjKLshcJ0F06a AqMbROiyaKrqGfJeP39jlUxsTbo3LXTyG+oW0bukJwb3Z0p+VQWnvc5hjRhHDvwJ/S l4CuuH2ZBolqw== Message-ID: <085ebc8c-636b-45d6-8431-878cbe90314b@kernel.org> Date: Mon, 16 Mar 2026 13:06:00 +0100 Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] virtio: document the map API in the driver writing guide To: John S , mst@redhat.com, jasowang@redhat.com Cc: xuanzhuo@linux.alibaba.com, eperezma@redhat.com, corbet@lwn.net, skhan@linuxfoundation.org, virtualization@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org References: From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 12/03/2026 22:58, John S wrote: > Add a new "Buffer mapping" section to the virtio driver writing guide > documenting the virtio map API (struct virtio_map_ops). This API was > introduced in commit bee8c7c24b73 ("virtio: introduce map ops in virtio > core") to allow transports and devices that do not perform DMA (such > as VDUSE) to provide their own buffer mapping logic instead of abusing > the DMA API. > > The new section explains when and why custom map ops are used, documents > the virtio_map_ops structure and the union virtio_map token, and > references the driver-facing mapping helpers with their kernel-doc. > > Signed-off-by: Kit Dallege > --- > .../virtio/writing_virtio_drivers.rst | 72 +++++++++++++++++++ > 1 file changed, 72 insertions(+) NAK, because: 1. Mismatched DCO or anonymous contribution 2. Likely unverified LLM microslop Best regards, Krzysztof