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 150901E008B; Mon, 17 Nov 2025 14:00:19 +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=1763388020; cv=none; b=DzYze663c13Ai1igQQtk0ca+VNdLEabq66d2FGwdsgyd8DwC4hWfEDsphl/3M795mwJ0jJDqx4EG0UQVYfIJ2GGnAN5mUpwHxkLkUoyQeQ2OVOwA1Q7DTIbx3FLxCBSA+eO/XbDWrQOtdCBQnt6ClsuXew1dIOy2dCijIKCdroA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763388020; c=relaxed/simple; bh=YoL7p6wREBJKyjLBhUuUwEP3qFVZ0NeQwm26ZY6pEnA=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version:Content-Type; b=fa2Qni8MKZnFHCgn2wf4ZOiK6r6GEazex+2KBLOCI78OSJIltmzJzIHBa3VlzsrkjLvH/uNeZb8f/G9de2cXQc4PHgc0LHp+qt0dfIpgvYPU2j9Tp67PUpFlx7zjYNGSasto66+ayzmy2q946JUo4djVQJO52a82T4725pLbwUs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=b1y8nGwj; 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="b1y8nGwj" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5E040C4CEF1; Mon, 17 Nov 2025 14:00:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1763388019; bh=YoL7p6wREBJKyjLBhUuUwEP3qFVZ0NeQwm26ZY6pEnA=; h=From:To:Cc:Subject:Date:From; b=b1y8nGwj5b/wA+Agu1M816LSZBkSamGPKqceMhspZxR2FVJb4RT+T8p0fJBDGgb5h j4AJrZh3Owv7cS+6C7roATZCD0nEwxzn+RVbn50BpEw+nxU9DyMyIPzc/5jkW1g3Wo 72cBqzDUnO7Js2pFDcQSmiXvPIowRYTX4xVvMQsIr0elrIHY0K4wDNEH7kCxNC5+Qm R2ZkU15k1IxWYyvUQY5mteVDotrxWQ1ZlxAz9rsj4WG2tAdz7S5/KhsE9pYOKHKNJ+ aM7lRNQB1YirkFWPBuvVhO0RTl300qVlO65kekzUGpRbTXEvEk0JdhCYowbaVRJZVU AFctSR3E51c/g== 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 00/11] TSM: Implement ->lock()/->accept() callbacks for ARM CCA TDISP setup Date: Mon, 17 Nov 2025 19:29:56 +0530 Message-ID: <20251117140007.122062-1-aneesh.kumar@kernel.org> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This patch series implements the TSM ->lock(), ->unlock and ->accept() callbacks required for the TDISP setup with ARM CCA described in the RMM ALP17 specification [1]. The series builds upon the TSM framework patches posted at [2] . A git repository containing all the related changes is available at [3]. Testing / Usage echo ${DEVICE} > /sys/bus/pci/devices/${DEVICE}/driver/unbind To Transition the device to TDISP LOCK state: echo tsm0 > /sys/bus/pci/devices/${DEVICE}/tsm/lock To Transition the device to TDISP RUN state: echo 1 > /sys/bus/pci/devices/${DEVICE}/tsm/accept echo ${DEVICE} > /sys/bus/pci/drivers_probe [1] https://developer.arm.com/-/cdn-downloads/permalink/Architectures/Armv9/DEN0137_1.1-alp17.zip [2] https://lore.kernel.org/all/20251024020418.1366664-1-dan.j.williams@intel.com/ [3] https://git.gitlab.arm.com/linux-arm/linux-cca.git cca/topics/cca-guest-setup-upstream-v2 Aneesh Kumar K.V (Arm) (11): coco: guest: arm64: Guest TSM callback and realm device lock support coco: guest: arm64: Add Realm Host Interface and guest DA helper coco: guest: arm64: Add support for guest initiated TDI bind/unbind coco: guest: arm64: Add support for updating interface reports from device coco: guest: arm64: Add support for updating measurements from device coco: guest: arm64: Add support for reading cached objects from host coco: guest: arm64: Validate Realm MMIO mappings from TDISP report coco: guest: arm64: Add support for fetching and verifying device info coco: guest: arm64: Wire Realm TDISP RUN/STOP transitions into guest driver coco: arm64: dma: Update force_dma_unencrypted for accepted devices coco: guest: arm64: Enable vdev DMA after attestation arch/arm64/include/asm/mem_encrypt.h | 6 +- arch/arm64/include/asm/rhi.h | 77 +++++ arch/arm64/include/asm/rsi.h | 3 + arch/arm64/include/asm/rsi_cmds.h | 81 +++++ arch/arm64/include/asm/rsi_smc.h | 58 ++++ arch/arm64/kernel/rsi.c | 11 + arch/arm64/mm/mem_encrypt.c | 10 + drivers/virt/coco/Makefile | 2 +- drivers/virt/coco/arm-cca-guest/Kconfig | 10 +- drivers/virt/coco/arm-cca-guest/Makefile | 3 +- drivers/virt/coco/arm-cca-guest/arm-cca.c | 95 +++++- drivers/virt/coco/arm-cca-guest/rhi-da.c | 330 ++++++++++++++++++++ drivers/virt/coco/arm-cca-guest/rhi-da.h | 18 ++ drivers/virt/coco/arm-cca-guest/rsi-da.c | 354 ++++++++++++++++++++++ drivers/virt/coco/arm-cca-guest/rsi-da.h | 83 +++++ include/linux/swiotlb.h | 5 + 16 files changed, 1137 insertions(+), 9 deletions(-) create mode 100644 arch/arm64/include/asm/rhi.h create mode 100644 drivers/virt/coco/arm-cca-guest/rhi-da.c create mode 100644 drivers/virt/coco/arm-cca-guest/rhi-da.h create mode 100644 drivers/virt/coco/arm-cca-guest/rsi-da.c create mode 100644 drivers/virt/coco/arm-cca-guest/rsi-da.h -- 2.43.0