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Wed, 10 Jan 2024 00:28:47 GMT Received: from [10.71.108.105] (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Tue, 9 Jan 2024 16:28:46 -0800 Message-ID: <731ee7a9-72c8-4ae7-8fcd-2c9bb07b09ac@quicinc.com> Date: Tue, 9 Jan 2024 16:28:46 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v16 01/34] docs: gunyah: Introduce Gunyah Hypervisor Content-Language: en-US To: Randy Dunlap , Alex Elder , Srinivas Kandagatla , Murali Nalajal , Trilok Soni , "Srivatsa Vaddagiri" , Carl van Schaik , Philip Derrin , Prakruthi Deepak Heragu , Jonathan Corbet , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Catalin Marinas , Will Deacon , Konrad Dybcio , Bjorn Andersson , Dmitry Baryshkov , "Fuad Tabba" , Sean Christopherson , "Andrew Morton" CC: , , , , , References: <20240109-gunyah-v16-0-634904bf4ce9@quicinc.com> <20240109-gunyah-v16-1-634904bf4ce9@quicinc.com> From: Elliot Berman In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: -UClUus9G_GkxMyCJNYM4wqqYC_paeay X-Proofpoint-GUID: -UClUus9G_GkxMyCJNYM4wqqYC_paeay X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.997,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-12-09_01,2023-12-07_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 mlxscore=0 clxscore=1011 spamscore=0 priorityscore=1501 malwarescore=0 mlxlogscore=652 adultscore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2311290000 definitions=main-2401100002 X-Rspamd-Queue-Id: 1BB314001B X-Rspam-User: X-Stat-Signature: hyyduefc3w8hp1iogz473zam4mbidkx4 X-Rspamd-Server: rspam01 X-HE-Tag: 1704846541-199436 X-HE-Meta: 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 Ht9dlVyG nmaSAj1Y01BYJJSUS4ZufUyKn4N6GGngOI73/r68cp4xFcOd0yW1IND3z5ElgxgpLx3i3JJIv6kr3Sxmsl2Z329Ukfr/Rv67MHSh2QLOi5pWFBqCIHbY9iBKk8jg40vg0cfkQc/TBty6ZFLJz6YV8j1elN/fnFGjOaq7pKXVaZ2lNNfzBatjFG03wbAcqLctpQfgLz8Ior64lbcgv75P4v4Q62scTOO4cUM2a6UGSeL/vbP4MaogBTg6+1BtysYJOViDodSfxBdrE4eUtYWEB2cbxx+g//3pT+e0Gb8lOuYD0zkxxgaXaw2ksk0Q1YK74wmmONlJElWGwOGTipunKFcla1MIYwTkslIMVxXLvNbMphXRFJ2WneuHC4tAhDTg1+GZPEKPdbOz5wIJLcYYfHh8sIOdPcU3glR39 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 1/9/2024 3:31 PM, Randy Dunlap wrote: > > > On 1/9/24 11:37, Elliot Berman wrote: >> Gunyah is an open-source Type-1 hypervisor developed by Qualcomm. It >> does not depend on any lower-privileged OS/kernel code for its core >> functionality. This increases its security and can support a smaller >> trusted computing based when compared to Type-2 hypervisors. >> >> Add documentation describing the Gunyah hypervisor and the main >> components of the Gunyah hypervisor which are of interest to Linux >> virtualization development. >> >> Signed-off-by: Elliot Berman >> --- >> Documentation/virt/gunyah/index.rst | 134 ++++++++++++++++++++++++++++ >> Documentation/virt/gunyah/message-queue.rst | 68 ++++++++++++++ >> Documentation/virt/index.rst | 1 + >> 3 files changed, 203 insertions(+) >> >> diff --git a/Documentation/virt/gunyah/index.rst b/Documentation/virt/gunyah/index.rst >> new file mode 100644 >> index 000000000000..da8e5e4b9cac >> --- /dev/null >> +++ b/Documentation/virt/gunyah/index.rst >> @@ -0,0 +1,134 @@ >> +.. SPDX-License-Identifier: GPL-2.0 >> + >> +================= >> +Gunyah Hypervisor >> +================= >> + >> +.. toctree:: >> + :maxdepth: 1 >> + >> + message-queue >> + >> +Gunyah is a Type-1 hypervisor which is independent of any OS kernel, and runs in >> +a higher CPU privilege level. It does not depend on any lower-privileged > > Is this the usual meaning of higher and lower? Seems backwards to me. > Hmm, I guess this x86 having ring 0 as most privileged and arm using EL3 as most privileged. I'll switch to "more" and "less" privilege rather than implying a numbering scheme. Thanks for the rest of suggestions, applied those! - Elliot