From patchwork Mon Mar 24 13:52:58 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bertrand Marquis X-Patchwork-Id: 14027393 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B5586C36002 for ; Mon, 24 Mar 2025 13:53:29 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.925580.1328449 (Exim 4.92) (envelope-from ) id 1twiEx-0008Ha-Vz; Mon, 24 Mar 2025 13:53:19 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 925580.1328449; Mon, 24 Mar 2025 13:53:19 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1twiEx-0008HT-Sj; Mon, 24 Mar 2025 13:53:19 +0000 Received: by outflank-mailman (input) for mailman id 925580; Mon, 24 Mar 2025 13:53:18 +0000 Received: from se1-gles-sth1-in.inumbo.com ([159.253.27.254] helo=se1-gles-sth1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1twiEw-0008HJ-Ib for xen-devel@lists.xenproject.org; Mon, 24 Mar 2025 13:53:18 +0000 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by se1-gles-sth1.inumbo.com (Halon) with ESMTP id 563fb632-08b7-11f0-9ea2-5ba50f476ded; Mon, 24 Mar 2025 14:53:17 +0100 (CET) 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 9C43B16F3; Mon, 24 Mar 2025 06:53:22 -0700 (PDT) Received: from C3HXLD123V.arm.com (unknown [10.57.86.79]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 17C823F58B; Mon, 24 Mar 2025 06:53:13 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 563fb632-08b7-11f0-9ea2-5ba50f476ded From: Bertrand Marquis To: xen-devel@lists.xenproject.org Cc: jens.wiklander@linaro.org, Andrew Cooper , Anthony PERARD , Michal Orzel , Jan Beulich , Julien Grall , =?utf-8?q?Roger_Pau_Monn=C3=A9?= , Stefano Stabellini , Volodymyr Babchuk Subject: [PATCH v4 0/5] FF-A VM to VM support Date: Mon, 24 Mar 2025 14:52:58 +0100 Message-ID: X-Mailer: git-send-email 2.47.1 MIME-Version: 1.0 This patch serie adds support to use FF-A between VM for communications using indirect messages. It adds a Kconfig parameter to enable this feature and marks it as experimental as for now there is no system to restrict communication rights between VM using this system. It also adds support to use VM to VM communications using FF-A even if there is no firmware support for FF-A. As this feature enables FF-A support in all cases, we also introduce a new command line parameter to allow the user to force which tee is to be used between FF-A and Optee to have a solution to enable optee support if FF-A VM to VM is enabled. Changes since v3: - reintroduce firmare v1.0 support in partinfo - fix a possible TOC/TOU issue in indirect message handling - typos and small fixes Changes since v2: - Rework partition_info_get implementation - Taint Xen and display a message when VM to VM is enabled - Various fixes explained in each patch Changes since v1 (rfc): - add a tee command line parameter - use IS_ENABLED instead of ifdef when possible - rebase on latest staging Bertrand Marquis (5): xen/arm: Create tee command line parameter xen/arm: ffa: Introduce VM to VM support xen/arm: ffa: Add buffer full notification support xen/arm: ffa: Add indirect message between VM xen/arm: ffa: Enable VM to VM without firmware docs/misc/xen-command-line.pandoc | 14 ++ xen/arch/arm/include/asm/tee/tee.h | 4 + xen/arch/arm/tee/Kconfig | 11 ++ xen/arch/arm/tee/ffa.c | 24 ++- xen/arch/arm/tee/ffa_msg.c | 110 ++++++++++-- xen/arch/arm/tee/ffa_notif.c | 140 ++++++++------- xen/arch/arm/tee/ffa_partinfo.c | 274 +++++++++++++++++++---------- xen/arch/arm/tee/ffa_private.h | 35 +++- xen/arch/arm/tee/tee.c | 31 ++++ 9 files changed, 474 insertions(+), 169 deletions(-)