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 B1CF22F49E4; Mon, 27 Oct 2025 09:51:32 +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=1761558692; cv=none; b=YcoWWmh1VQxpaBKKo9ozMBexaBmR+IDhT0rhEWTQJ5oHwalmF1sUcYfgfj7T6UJjmpND2WmHwJ1Jk4KKYZNv/FYQ0DTLv1I+CW4pzVaOQeCb+2k1PO6x4z+XCl/wjFS1VUwfOhkCSQT0Z9f2P6ghjQ8PW1ask+2xm1etYigF8iA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761558692; c=relaxed/simple; bh=sYVeDu9M+oOjuuqkIzrIaSA25SCHmjEU+UGiJsr+pIQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=bAbPdLwNt+dyhFQKGdgaNr9WwQaH/dZ7dvEGH638RvSpixyOxoc1d3vIghZHVrd6yx4iF9WQEczYYWNgJNa83vVHfNruVvpxjKvJ88UjKJx80pOENXmjFD4vHo/HZ+LGS8T0cMAvtRJRvQjFLbE8UQkBiO5u0QE6L1dLBVaMGCI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=UsRUe0dM; 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="UsRUe0dM" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 84D2CC113D0; Mon, 27 Oct 2025 09:51:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761558692; bh=sYVeDu9M+oOjuuqkIzrIaSA25SCHmjEU+UGiJsr+pIQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UsRUe0dMiHv2tAIJuwV1o9JmVOUVDmc1Ps8eMoz98fd5DYmFsmrgJfb0SbK/WHPzO 9cE8tf7JiM9wLwmJuWvfcZatHpcpu1QoYYdZPS5qZH74xGa7x/+dv8k/GqYirjbcMG l18Q3Pk/V9vl9W1/SKttqfu4O8n/tghQim32kQ/XYzXj3UCk8w/04FFWzzkZJc7Rce h9tyf4Q4K5EDKgYoPfWz8CL3Loea7N3/wXND+9GuTvAxrjtXtP/CRyBI6IgsoTi6ho NMPb/nbu+g5ccOjECGIosowKmoWpP6Tg0aKtlQik+KglNlc1vlgNNJfAnP2pcxfU8D 905/kNEDD8tkw== From: "Aneesh Kumar K.V (Arm)" To: linux-coco@lists.linux.dev, kvmarm@lists.linux.dev Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, dan.j.williams@intel.com, aik@amd.com, lukas@wunner.de, Samuel Ortiz , Xu Yilun , Jason Gunthorpe , Suzuki K Poulose , Steven Price , Bjorn Helgaas , Jonathan Cameron , Catalin Marinas , Marc Zyngier , Will Deacon , Oliver Upton , "Aneesh Kumar K.V (Arm)" Subject: [PATCH v2 03/12] coco: guest: arm64: Drop dummy RSI platform device stub Date: Mon, 27 Oct 2025 15:19:07 +0530 Message-ID: <20251027094916.1153143-16-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251027094916.1153143-1-aneesh.kumar@kernel.org> References: <20251027094916.1153143-1-aneesh.kumar@kernel.org> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The SMCCC firmware driver now creates the `arm-smccc` platform device and also creates the CCA auxiliary devices once the RSI ABI is discovered. This makes the arch-specific arm64_create_dummy_rsi_dev() helper redundant. Remove the arm-cca-dev platform device registration and let the SMCCC probe manage the RSI device. systemd match on platform:arm-cca-dev for confidential vm detection [1]. Losing the platform device registration can break that. Keeping this removal in its own change makes it easy to revert if that regression blocks the rollout. [1] https://lore.kernel.org/all/4a7d84b2-2ec4-4773-a2d5-7b63d5c683cf@arm.com Signed-off-by: Aneesh Kumar K.V (Arm) --- arch/arm64/kernel/rsi.c | 15 --------------- 1 file changed, 15 deletions(-) diff --git a/arch/arm64/kernel/rsi.c b/arch/arm64/kernel/rsi.c index 5d711942e543..1b716d18b80e 100644 --- a/arch/arm64/kernel/rsi.c +++ b/arch/arm64/kernel/rsi.c @@ -158,18 +158,3 @@ void __init arm64_rsi_init(void) static_branch_enable(&rsi_present); } - -static struct platform_device rsi_dev = { - .name = "arm-cca-dev", - .id = PLATFORM_DEVID_NONE -}; - -static int __init arm64_create_dummy_rsi_dev(void) -{ - if (is_realm_world() && - platform_device_register(&rsi_dev)) - pr_err("failed to register rsi platform device\n"); - return 0; -} - -arch_initcall(arm64_create_dummy_rsi_dev) -- 2.43.0