Re: [PATCH v2 00/11] Drivers for gunyah hypervisor

From: Bagas Sanjaya <bagasdotme@gmail.com>
To: Elliot Berman <quic_eberman@quicinc.com>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>,
	Murali Nalajala <quic_mnalajal@quicinc.com>,
	Trilok Soni <quic_tsoni@quicinc.com>,
	Srivatsa Vaddagiri <quic_svaddagi@quicinc.com>,
	Carl van Schaik <quic_cvanscha@quicinc.com>,
	Andy Gross <agross@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
	Sudeep Holla <sudeep.holla@arm.com>,
	Marc Zyngier <maz@kernel.org>, Rob Herring <robh+dt@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Jonathan Corbet <corbet@lwn.net>, Will Deacon <will@kernel.org>,
	Catalin Marinas <catalin.marinas@arm.com>,
	devicetree@vger.kernel.org, linux-doc@vger.kernel.org,
	linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH v2 00/11] Drivers for gunyah hypervisor
Date: Thu, 4 Aug 2022 15:26:56 +0700	[thread overview]
Message-ID: <YuuC0NISKFVIhUD1@debian.me> (raw)
In-Reply-To: <20220801211240.597859-1-quic_eberman@quicinc.com>

On Mon, Aug 01, 2022 at 02:12:29PM -0700, Elliot Berman wrote:
> Gunyah is a Type-1 hypervisor independent of any
> high-level OS kernel, and runs in a higher CPU privilege level. It does
> not depend on any lower-privileged OS kernel/code for its core
> functionality. This increases its security and can support a much smaller
> trusted computing base than a Type-2 hypervisor.
> 
> Gunyah is an open source hypervisor. The source repo is available at
> https://github.com/quic/gunyah-hypervisor.
> 
> The diagram below shows the architecture.
> 
> ::
> 
>         Primary VM           Secondary VMs
>      +-----+ +-----+  | +-----+ +-----+ +-----+
>      |     | |     |  | |     | |     | |     |
>  EL0 | APP | | APP |  | | APP | | APP | | APP |
>      |     | |     |  | |     | |     | |     |
>      +-----+ +-----+  | +-----+ +-----+ +-----+
>  ---------------------|-------------------------
>      +--------------+ | +----------------------+
>      |              | | |                      |
>  EL1 | Linux Kernel | | |Linux kernel/Other OS |   ...
>      |              | | |                      |
>      +--------------+ | +----------------------+
>  --------hvc/smc------|------hvc/smc------------
>      +----------------------------------------+
>      |                                        |
>  EL2 |            Gunyah Hypervisor           |
>      |                                        |
>      +----------------------------------------+
> 
> Gunyah provides these following features.
> 
> - Threads and Scheduling: The scheduler schedules virtual CPUs (VCPUs) on
> physical CPUs and enables time-sharing of the CPUs.
> - Memory Management: Gunyah tracks memory ownership and use of all memory
> under its control. Memory partitioning between VMs is a fundamental
> security feature.
> - Interrupt Virtualization: All interrupts are handled in the hypervisor
> and routed to the assigned VM.
> - Inter-VM Communication: There are several different mechanisms provided
> for communicating between VMs.
> - Device Virtualization: Para-virtualization of devices is supported using
> inter-VM communication. Low level system features and devices such as
> interrupt controllers are supported with emulation where required.
> 

Hi,

I can't apply this series on top of mainline or linux-next. On what tree
(and what commit) this series is based on? I'd like to do htmldocs test.

Thanks.

-- 
An old man doll... just what I always wanted! - Clara