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 CD77722301; Fri, 6 Feb 2026 10:46:12 +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=1770374772; cv=none; b=L4XkBR80rews93VxnMkoVtGPKzJ88nrMR3HYCnlau0WLNHQCOV+AdphXiLmBsdeCHsgKkEr0Gpl71U7G5mi9T1ocw7unaDWP2hqtacXaBq3cKBUNBum2CHLVRTGJUXFGDrNuglffMK4Ugc5iMzwwY75a5xOLwDet31QLbVh3aWE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1770374772; c=relaxed/simple; bh=SgH3PVl9XDWqTOthcj1dd9B7pnDKtSF9D1Mzvlb6naM=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=sOX2Gd7gqF9bRoBelOKExCNA655mq4GG+XienmPpWupSd4fm9T17TlZJksseI3DzmP/ynSEuAlLQ1/z7smWxUvwfx0eL6tuTXPZ2rtiuIB9zmzL8PpLMW72UVZxqaU23kxwGPe4o7KAq6hoaEWDcDObO91+cV8K0ewC0nEycY9s= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=VDADRuAe; 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="VDADRuAe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1D3C9C116C6; Fri, 6 Feb 2026 10:46:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1770374772; bh=SgH3PVl9XDWqTOthcj1dd9B7pnDKtSF9D1Mzvlb6naM=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=VDADRuAevPHEdEW3GWQ43kfKSftvTf7AR1gxZPVv6oP8X1og6EmSKbbn4h69GQPYD GfKxebuiyV34DIZ5liyCXRULlULtRB/2rHSxEaCMY717d4HS0RVfE/N4F57tZtg2ci h2eKgKzxEIlWTVm7IePjtOppaoRbBYLJH6wb50boZnxNTYGunou1G8sFFBJIPVPGeC rpBXFYGZXV5iGfCIVnTih3GQXPDAQEBSqdWKK/PrZrh/59Nh2LWWhwvMUxvHfwMJX2 ZNF2DH2V1JoV85XUMWmjqXGVkM4syvam4aA4mehrkObV9squ215mMCRrbwsPZnu3Xt F7ukv50++cP/A== Message-ID: <2ca4a5c1-9267-4177-b339-e1ac28812c46@kernel.org> Date: Fri, 6 Feb 2026 11:46:06 +0100 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 0/7] iommu/riscv: Add HPM support for RISC-V IOMMU To: Lv Zheng , Tomasz Jeznach , Joerg Roedel , Will Deacon , Robin Murphy , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: Jingyu Li , Zhijian Chen , iommu@lists.linux.dev, linux-perf-users@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, devicetree@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 05/02/2026 10:09, Lv Zheng wrote: > Includes HPM support for RISC-V IOMMU. The HPM hardware mechanism can be > found in the recent announced SpacemiT SoCs (K3, V100), where T100 > (SpacemiT distributed IOMMU) is shipped. > > Revisions: > v1 > Initial release. > v2 (sent as v1.1) > Split and cleanup DT-bindings. > v3 > 1. Refactor using vendor specific compatible. > 2. Implement vendor events with a userspace identifier. > v4 And now also v4 is in the same thread? This is total mess! How tools are supposed to handle this? Best regards, Krzysztof