linux-kernel - Re: [PATCH v10 04/21] virt: geniezone: Add GenieZone hypervisor driver

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Date: Mon, 15 Apr 2024 15:28:27 +0100
From: Simon Horman <horms@...nel.org>
To: Yi-De Wu <yi-de.wu@...iatek.com>
Cc: Yingshiuan Pan <yingshiuan.pan@...iatek.com>,
	Ze-Yu Wang <ze-yu.wang@...iatek.com>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Jonathan Corbet <corbet@....net>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>,
	Richard Cochran <richardcochran@...il.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	netdev@...r.kernel.org, linux-mediatek@...ts.infradead.org,
	David Bradil <dbrazdil@...gle.com>,
	Trilok Soni <quic_tsoni@...cinc.com>,
	My Chuang <my.chuang@...iatek.com>,
	Shawn Hsiao <shawn.hsiao@...iatek.com>,
	PeiLun Suei <peilun.suei@...iatek.com>,
	Liju Chen <liju-clr.chen@...iatek.com>,
	Willix Yeh <chi-shen.yeh@...iatek.com>,
	Kevenny Hsieh <kevenny.hsieh@...iatek.com>
Subject: Re: [PATCH v10 04/21] virt: geniezone: Add GenieZone hypervisor
 driver

On Fri, Apr 12, 2024 at 02:57:01PM +0800, Yi-De Wu wrote:
> From: "Yingshiuan Pan" <yingshiuan.pan@...iatek.com>
> 
> GenieZone hypervisor(gzvm) is a type-1 hypervisor that supports various
> virtual machine types and provides security features such as TEE-like
> scenarios and secure boot. It can create guest VMs for security use
> cases and has virtualization capabilities for both platform and
> interrupt. Although the hypervisor can be booted independently, it
> requires the assistance of GenieZone hypervisor kernel driver(gzvm-ko)
> to leverage the ability of Linux kernel for vCPU scheduling, memory
> management, inter-VM communication and virtio backend support.
> 
> Add the basic hypervisor driver. Subsequent patches will add more
> supported features to this driver.
> 
> Signed-off-by: Yingshiuan Pan <yingshiuan.pan@...iatek.com>
> Signed-off-by: Jerry Wang <ze-yu.wang@...iatek.com>
> Signed-off-by: Liju Chen <liju-clr.chen@...iatek.com>
> Signed-off-by: Yi-De Wu <yi-de.wu@...iatek.com>

..

> +static struct platform_driver gzvm_driver = {
> +	.probe = gzvm_drv_probe,
> +	.remove = gzvm_drv_remove,
> +	.driver = {
> +		.name = KBUILD_MODNAME,
> +		.owner = THIS_MODULE,

Hi Yi-De Wu,

A minor nit from my side:

There is no need to set owner here as
owner is set (overridden) by module_platform_driver().

Flagged by Coccinelle.

> +		.of_match_table = gzvm_of_match,
> +	},
> +};
> +
> +module_platform_driver(gzvm_driver);
> +
> +MODULE_DEVICE_TABLE(of, gzvm_of_match);
> +MODULE_AUTHOR("MediaTek");
> +MODULE_DESCRIPTION("GenieZone interface for VMM");
> +MODULE_LICENSE("GPL");

..