From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8731F3E0C56; Tue, 19 May 2026 08:24:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779179054; cv=none; b=J/D/FqLZ7DdtxtfvEEDJEUiOOe0AR+Dt0eHxRAoEzzTtU+OncRmG+LtuAM9+x6LSYSeVyGPxuVSdNG315eQ6o0hbn9rkMWhUg620t4PuuEAxL4M/9z3u62XOrlaza7UJMnoPQuRaWUtyJqxXwAiT/lNUGYWVKWYLE6rXN6el28A= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779179054; c=relaxed/simple; bh=Y/ur6kXaqyutmulE6ALqWLW6OIukPW3L6JklRGunmRk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=HC8ksItoVrbqisjnmvferUPEegN304iFRB2X4CYb4brSBV4QhDU2pcUChiH0R7DYlWWQCe9hPRT9BVs1Qa08Fjvztlvh3WxCENdrPYzig5UvkSwRxadzIROZRT2DKNdIHwNve7+nvcsMiDKMPifwl3ytpXOMo4eYVTFnANp0CKo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=mZG8aox/; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="mZG8aox/" Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id CA7D91CE0; Tue, 19 May 2026 01:24:06 -0700 (PDT) Received: from [10.57.21.217] (unknown [10.57.21.217]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 675043F85F; Tue, 19 May 2026 01:24:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1779179051; bh=Y/ur6kXaqyutmulE6ALqWLW6OIukPW3L6JklRGunmRk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=mZG8aox/W/e6xzhn5RiTNydJTpx7flfHa/abZ3kd8KTqJJ71HHucb3bQGFflvCn0W HgL59EE2AyG3IVbJqMMEyB0L/E7CCEYcO65lQY1jxB14er0PuDC3w9ukYW34JH66fw YBFFE8XCuROPCyHeY83FCo4XfqVvlp+m8Qn9tncc= Message-ID: Date: Tue, 19 May 2026 09:24:07 +0100 Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v4 00/14] coco/TSM: Host-side Arm CCA IDE setup via connect/disconnect callbacks Content-Language: en-GB To: Will Deacon , "Aneesh Kumar K.V (Arm)" Cc: linux-coco@lists.linux.dev, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Alexey Kardashevskiy , Catalin Marinas , Dan Williams , Jason Gunthorpe , Jonathan Cameron , Marc Zyngier , Samuel Ortiz , Steven Price , Xu Yilun References: <20260427065121.916615-1-aneesh.kumar@kernel.org> From: Suzuki K Poulose In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 18/05/2026 13:59, Will Deacon wrote: > On Mon, Apr 27, 2026 at 12:21:07PM +0530, Aneesh Kumar K.V (Arm) wrote: >> arch/arm64/include/asm/rmi_cmds.h | 85 +++ >> arch/arm64/include/asm/rmi_smc.h | 168 +++++ > > Curious, but why does this stuff have to live in the arch code? Wouldn't > it be better off somewhere like drivers/firmware/ or > include/linux/arm-rmi.h? Good point. RMI interface is only available for arm64 (not in Arm32). That said, it is indeed a firmware ! ;-) interface. The APIs are closely integrated with the KVM Realm management. If the general consensus is to move them under drivers/firmware (like PSCI), we could take that approach. Suzuki > > Will