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 AEBE537C113 for ; Mon, 9 Mar 2026 10:05:38 +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=1773050738; cv=none; b=fara3t1fi/wb5QEvc4adFJfanWEUfvlXWzmhaYp4LP+fCc8dLYhoIA3aNKtO8bzrr62YtfqEOhqXCX8Gc9u+HGCxgtM1TA++msTrvIu0HxakZBzWuRlKuiQdzEpFaXzCyF48yr4RpQHafTLHHznd/2vEazZl1AbCKg6KQvH32qs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773050738; c=relaxed/simple; bh=C/zPRRsYTBI8Qp8SK8L/HdVnrLbMCEtXVMtLu+bv/Ow=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rtI1RO2JOZGJJuLV2ZdfY/5AhoEAIG8PQiZDmADvHDO6NvB/cLsR5IfaB9k2dt+HZGXoTyNaXZ1H1HlYoimTwJUgRG+dEyFpH5L7bdt6ZiF6UytGphFEtJ2GK6VEv8CeEY00zC3sHADmr6oYksRwjnxGcio+3PN682t/YwLLMoQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=C5TTbvDh; 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="C5TTbvDh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id F2D72C4CEF7; Mon, 9 Mar 2026 10:05:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773050738; bh=C/zPRRsYTBI8Qp8SK8L/HdVnrLbMCEtXVMtLu+bv/Ow=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C5TTbvDhdKkkIIebpGB2cvg1VfJRLrHhJ8LT2UlCzDeI7R7L2RV2PgKstpFjDfRA4 ofcnLr55pDiyURX/MM1tjBl13RwxYN+t5DWAieNpxU0mmEdSrHxcRcZMAm1ygh9VYp UoJhvdEPMcephwyaKi/2fCzFzLioDV8Ayifltu5b608OjCjvbbPwJg3PXICHkhcTuK zxpktAzjm2ve3ouzUenlicK+7U0jW4yO+O/CmzcNv48S+yZzJqxIi1McgBCI5Vpnr4 g7iWwYZ/gz9b+lYpyRxyf+cQ4gKZpbvz8iddP5uAOAvqLwqQimlaQHUi/0c8LRnpqS C/pIrSnnSHZSg== From: "Aneesh Kumar K.V (Arm)" To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: "Aneesh Kumar K.V (Arm)" , Catalin Marinas , Will Deacon , Lorenzo Pieralisi , Jeremy Linton , Greg KH , Mark Rutland , Sudeep Holla , Jonathan Cameron Subject: [PATCH v3 2/2] coco: guest: arm64: Drop dummy RSI platform device stub Date: Mon, 9 Mar 2026 15:35:07 +0530 Message-ID: <20260309100507.2303361-2-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260309100507.2303361-1-aneesh.kumar@kernel.org> References: <20260309100507.2303361-1-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-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 Cc: Catalin Marinas Cc: Will Deacon Cc: Lorenzo Pieralisi Cc: Jeremy Linton Cc: Greg KH Cc: Mark Rutland Cc: Lorenzo Pieralisi Cc: Sudeep Holla Reviewed-by: Jonathan Cameron 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