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 2BBEF3191AC; Thu, 30 Oct 2025 12:29:51 +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=1761827391; cv=none; b=JeJR6PUZ6KtC2YOwbfeiBixVbArI8qEexMUzGqBrJz60WDP2EjONrHXUhpZPc5YbBTYZrCOXMk7vLmykvLPgFhYhzRcc6CS0rpDPFLCmOfRyb8H4BBAn5e1sHDTD3BaG4a5IJcxXahoQJePaCo33T2lnYTwxqiFf+mousw3sUZg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761827391; c=relaxed/simple; bh=8lOt5hjMRohwbmB1ls9eEfGExLapiWvkkYYw/nN1DJc=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=Q8W/lZKH6qsnxPlgE6Nz5Lr8HbrU90eZf0SERVcBLt8fZHiguTIgHj3Sq/QS6/VVGNFz3T6xTcthH+wnqkzleMCR7Yus3ps1MlLusJeEBdMUyWWODczFmqxwegvOrZbnHParozMjADgxF5xu0MBcLx/TQpAJZRk4yCLEggQQAVw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Pqj5hn5v; 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="Pqj5hn5v" Received: by smtp.kernel.org (Postfix) with ESMTPS id C63C3C4CEF1; Thu, 30 Oct 2025 12:29:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1761827390; bh=8lOt5hjMRohwbmB1ls9eEfGExLapiWvkkYYw/nN1DJc=; h=From:Subject:Date:To:Cc:Reply-To:From; b=Pqj5hn5vGCM59+8y+IfnD+NqIKiP+Xtio5j4+HF6yFJoeYjW0mhV8G6NM8LNCo/6H y/DfKeEzHQFvd6pc1/eyGJY8FFchHQv1e9WsEXmIAV7p9+wQNO0izv6NeLLgkD9EZt qF1HrFtYAv29uJpQxzP56fwtn8n/IfDw8TbhUOrtYdAXqgjuep1YkcgsZwgumWdkQs hk4X7OKvq34qE75vCwdFPEANodb5k1P1J0ljsEuP5dPM0ZQAKEqohuq+JBKLVmNejB mGp6eEpLVwLImaZj9bPbdez7gtrER6PkGg2fh8JEm8h1mPzpFT1gTzl5ppyDdSv+bG a1nwdG1BUS9wQ== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id AF8B8CCF9FC; Thu, 30 Oct 2025 12:29:50 +0000 (UTC) From: Per Larsen via B4 Relay Subject: [PATCH 0/2] KVM: arm64: Support FF-A direct messaging interfaces Date: Thu, 30 Oct 2025 12:29:38 +0000 Message-Id: <20251030-host-direct-messages-v1-0-463e57871c8f@google.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIADNaA2kC/x3MQQqAIBBA0avErBtQQaKuEi1Mx5pFGY5EIN09a fkW/1cQykwCU1ch083C6WzQfQd+d+dGyKEZjDJWKzPinqRg4Ey+4EEibiNBa5QOQ7TWrQFaemW K/PzbeXnfD7oEG9ZmAAAA X-Change-ID: 20251029-host-direct-messages-5201d7f55abd To: Marc Zyngier , Oliver Upton , Joey Gouly , Suzuki K Poulose , Zenghui Yu , Catalin Marinas , Will Deacon , Yeoreum Yun , Ben Horgan Cc: Armelle Laine , Sebastien Ene , linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linux-kernel@vger.kernel.org, Per Larsen X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1761827390; l=1005; i=perlarsen@google.com; s=20250508; h=from:subject:message-id; bh=8lOt5hjMRohwbmB1ls9eEfGExLapiWvkkYYw/nN1DJc=; b=SJc2WqLL6M7DVif/tAgJkM8/baVdgfC8ov9MMIpqIYFzZPFOsWgplIQTkOdS2vLv+95zxxAYh 2taGWk+ftFWCco5JzZEUezmUWPMA5uE16SLfkeGoq5HMLDAN/meb0wr X-Developer-Key: i=perlarsen@google.com; a=ed25519; pk=jjc/Ta4VmrLRmMoahP6d1mBcKzvWU+nsmdtYe2oS2kQ= X-Endpoint-Received: by B4 Relay for perlarsen@google.com/20250508 with auth_id=402 X-Original-From: Per Larsen Reply-To: perlarsen@google.com Support FFA_MSG_SEND_DIRECT_REQ unconditionally. Support FFA_MSG_SEND_DIRECT_REQ2 if hypervisor negotiated version 1.2+. The second patch was part of a previous patch set [0] but was dropped since the use case was unclear. A clear use case has now appeared [1]. Tested by booting Android under QEMU. Best Regards, Per [0]: https://lore.kernel.org/all/20250730-virtio-msg-ffa-v9-0-7f1b55c8d149@google.com/ [1]: https://lore.kernel.org/all/20251027191729.1704744-1-yeoreum.yun@arm.com/ Signed-off-by: Per Larsen --- Per Larsen (1): KVM: arm64: Support FFA_MSG_SEND_DIRECT_REQ2 in host handler Sebastian Ene (1): KVM: arm64: Support FFA_MSG_SEND_DIRECT_REQ in host handler arch/arm64/kvm/hyp/nvhe/ffa.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) --- base-commit: e53642b87a4f4b03a8d7e5f8507fc3cd0c595ea6 change-id: 20251029-host-direct-messages-5201d7f55abd Best regards, -- Per Larsen