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 5D8B8432BCA for ; Wed, 5 Aug 2026 11:21:52 +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=1785928914; cv=none; b=S/T52SDOGHmcUMbqOonSQyKurOzlvzo/+64B819Rkv3RNXiQdswJ/81jYRfRHTExgxjluWL/IpLyKFgM+l4d3uU3fEAKfJ37UqivijPg5RfNI9S4Cpau8cmIte7CUUch81Conca8plv/aomPfI3PNWEFxEVnAbthBIHm0dY8EqY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785928914; c=relaxed/simple; bh=/iJTCW17ahxPRx1HgFbIWlIcrG14qstN68rpDrM2mKM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=rM9/09jfbX/QWdC6AOtfD54oWoEy4uXHZesjro/AjxqMjThRdchnNGIR05vaBv20zFcJ6fwIGI2UWdcwCt7OdufT4ussjtOKE4xW/DVS/w44DDrFlx4lTy76eYUVs5rXNPzRwbTChYxwvQ12qF6Vr1AuRBQCaYmxinh1Pf5VKbc= 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=afsruKh5; 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="afsruKh5" 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 AB83C153B; Wed, 5 Aug 2026 04:21:47 -0700 (PDT) Received: from arm.com (usa-sjc-mx-foss1.foss.arm.com [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 01DAB3F66F; Wed, 5 Aug 2026 04:21:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1785928911; bh=/iJTCW17ahxPRx1HgFbIWlIcrG14qstN68rpDrM2mKM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=afsruKh5eASSavojLCE9iWwxEk/PzOhPmR0YPhoJKNTNcEQKOHfI+yvWe7I048rqI dXMAq8b7g+4TD6L2EqJpQwhkhqM4bnuvfJe/BLBKfxgZ1SgMOqO9U2bfSzXTcdrhIe p8NIgTSFn8XE9fnNd4aeCsS6b+mtSjKHraeR25eo= Date: Wed, 5 Aug 2026 12:21:39 +0100 From: Catalin Marinas To: "Aneesh Kumar K.V (Arm)" Cc: linux-coco@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Greg KH , Jeremy Linton , Jonathan Cameron , Lorenzo Pieralisi , Mark Rutland , Sudeep Holla , Will Deacon , Steven Price , Suzuki K Poulose , Andre Przywara Subject: Re: [PATCH v9 3/7] firmware: arm_rmm: Move RSI support out of arch/arm64 Message-ID: References: <20260805063255.1638614-1-aneesh.kumar@kernel.org> <20260805063255.1638614-4-aneesh.kumar@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@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: <20260805063255.1638614-4-aneesh.kumar@kernel.org> On Wed, Aug 05, 2026 at 12:02:51PM +0530, Aneesh Kumar K.V (Arm) wrote: > The RSI SMCCC function IDs describe a firmware ABI and are not arm64 > architecture specific definitions. Follow-up changes need to use them from > non-arch code, including drivers/firmware/smccc and the Arm CCA guest > driver. > > Move the complete Realm Service Interface (RSI) implementation from > arch/arm64 to drivers/firmware/arm_rmm. The RSI SMCCC definitions and > command helpers are also moved to include/linux so they can be shared by > architecture code and firmware or driver code. This also keeps the > firmware interface outside architecture code, as requested [1]. > > [1] https://lore.kernel.org/all/agsNO9cc7H-b0H8L@willie-the-truck > > Signed-off-by: Aneesh Kumar K.V (Arm) I haven't checked but Sashiko has some points that it may break the build on other architectures with COMPILE_TEST. https://sashiko.dev/#/patchset/20260805063255.1638614-1-aneesh.kumar@kernel.org (for some reason I get error 502 above; hopefully it's temporary) -- Catalin