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[46.59.78.111]) by smtp.gmail.com with ESMTPSA id q9-20020ac25289000000b004db0d26adb4sm927746lfm.182.2023.02.22.07.33.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Feb 2023 07:33:57 -0800 (PST) X-Outflank-Mailman: Message body and most headers restored to incoming version 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: 5311e990-b2c6-11ed-a089-e9535cc0f9c3 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Zqvukz9Wc9inONzmuv1uqsHsrEr+5BrdoP3LyiYlJNc=; b=A5wwFKfLIQXuxIScvZsdkXI7TfET/8Br388Cj7wQG+b6a6GmqgTNLaCaxklh0lPUDS nAtT2c9RPmuCRUo9tHO/DoToQ6fM2JSEDsNaDEkka0r2rrTlb8NZTB3yVjfyUE55xwsJ MbWoyYJXmJ78Hfk8KBYdC/1UWDc3CPohkl3MjiC8fbTBmTWDN86nHVwYZOAXt395BHrB 0r1M5lmxpHiviohxpFyo+3w+stRsTSLsQmN+a+WbHu5sZp81OGz1bXzZoeJ8PW82Z2WL qZHrVGIulMCIaK8N750h+PWtKziYA7TTPJGkgAjWklIj8QJSCMfg81WhXynCr5u9e/5R RjLg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Zqvukz9Wc9inONzmuv1uqsHsrEr+5BrdoP3LyiYlJNc=; b=iMTFeCRCtHmehAD/djPzKFMSCd5OOE06jXql96iy/cty55qYHOkhRomRBX+9qrCGqm Pg4lp26jwBfOY2zsg6xhlQOgYs3664jE5qunbxt3rUJY+sNSOl+Ws1QHAf8sNwZO0tP1 0ARMLhssKwYx2fAyEWvEh86YVRVOymsrzsQJtkm7Klt1NTH5WkEEFxB81W+w2RGKzocZ dU6LX7v9GIKEVajpnGcdo4FBnHMioYCVonKjCQcOEN4Ebu9SSbmgKikaXdu6w/Gk0kx5 gQR+bvhnSIN1oWhxMNPZDkQ46VncnpLtGtnv8IJeAwK+qjFCQs4FSTG80o4r6fnAEKn7 G7uA== X-Gm-Message-State: AO0yUKWE5ozFZ/Il3/8JCAn1AyaHJqb/CKZBbC/w7KaLSo4himpLmzhm DBfNLJqdontwEP7G5zgHAhIy/UwIopDLKx4mLBM= X-Google-Smtp-Source: AK7set+DcuvGaDQ5vp9ctw+TkJQtIbCDGMtu3l/ttC+FbPE+boIAHse0unqWaTs9of2BqAGtALrbeg== X-Received: by 2002:ac2:5234:0:b0:4cb:4374:cc78 with SMTP id i20-20020ac25234000000b004cb4374cc78mr3352349lfl.26.1677080037933; Wed, 22 Feb 2023 07:33:57 -0800 (PST) From: Jens Wiklander To: xen-devel@lists.xenproject.org Cc: Bertrand.Marquis@arm.com, Marc Bonnici , Achin Gupta , Jens Wiklander , Andrew Cooper , George Dunlap , Jan Beulich , Julien Grall , Stefano Stabellini , Wei Liu , Anthony PERARD Subject: [XEN PATCH v7 04/20] docs: add Arm FF-A mediator Date: Wed, 22 Feb 2023 16:33:01 +0100 Message-Id: <5c588d92cdf23a7355a79bf4b91c7214e5ced197.1677079672.git.jens.wiklander@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1677080067532100015 Content-Type: text/plain; charset="utf-8" Describes a FF-A version 1.1 [1] mediator to communicate with a Secure Partition in secure world. [1] https://developer.arm.com/documentation/den0077/latest Signed-off-by: Jens Wiklander --- SUPPORT.md | 7 +++++++ docs/man/xl.cfg.5.pod.in | 15 +++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/SUPPORT.md b/SUPPORT.md index aa1940e55f09..5e0595419684 100644 --- a/SUPPORT.md +++ b/SUPPORT.md @@ -818,6 +818,13 @@ that covers the DMA of the device to be passed through. =20 No support for QEMU backends in a 16K or 64K domain. =20 +### ARM: Firmware Framework for Arm A-profile (FF-A) Mediator + + Status, Arm64: Tech Preview + +There are still some code paths where a vCPU may hog a pCPU longer than +necessary. The FF-A mediator is not yet implemented for Arm32. + ### ARM: Guest Device Tree support =20 Status: Supported diff --git a/docs/man/xl.cfg.5.pod.in b/docs/man/xl.cfg.5.pod.in index 024bceeb61b2..ca4fc3e67b0c 100644 --- a/docs/man/xl.cfg.5.pod.in +++ b/docs/man/xl.cfg.5.pod.in @@ -1645,6 +1645,21 @@ in OP-TEE. =20 This feature is a B. =20 +=3Ditem B + +B Allow a guest to communicate via FF-A with Secure Partitions +(SP), default false. + +Currently is only a small subset of the FF-A specification supported. Just +enough to communicate with OP-TEE. In general only direct messaging and +sharing memory with one SP. More advanced use cases where memory might be +shared or donated to multple SPs is not supported. + +See L for more +informantion about FF-A. + +This feature is a B. + =3Dback =20 =3Dback --=20 2.34.1