linux-kernel - Re: [PATCH v1 3/6] soc: mediatek: virt: geniezone: Introduce GenieZone hypervisor support

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Message-ID: <5c1d69c8-d973-fa7b-1f14-c72729ff5594@gmail.com>
Date:   Thu, 13 Apr 2023 19:08:41 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Yi-De Wu <yi-de.wu@...iatek.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Jonathan Corbet <corbet@....net>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Yingshiuan Pan <yingshiuan.pan@...iatek.com>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-doc@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Jades Shih <jades.shih@...iatek.com>,
        Miles Chen <miles.chen@...iatek.com>,
        Ivan Tseng <ivan.tseng@...iatek.com>,
        My Chuang <my.chuang@...iatek.com>,
        Shawn Hsiao <shawn.hsiao@...iatek.com>,
        PeiLun Suei <peilun.suei@...iatek.com>,
        Ze-Yu Wang <ze-yu.wang@...iatek.com>,
        Liju Chen <liju-clr.chen@...iatek.com>
Subject: Re: [PATCH v1 3/6] soc: mediatek: virt: geniezone: Introduce
 GenieZone hypervisor support



On 13/04/2023 14:55, Krzysztof Kozlowski wrote:
> On 13/04/2023 11:07, Yi-De Wu wrote:
>> From: "Yingshiuan Pan" <yingshiuan.pan@...iatek.com>
>>
>> GenieZone is MediaTek proprietary hypervisor solution, and it is running
>> in EL2 stand alone as a type-I hypervisor. This patch exports a set of
>> ioctl interfaces for userspace VMM (e.g., crosvm) to operate guest VMs
>> lifecycle (creation, running, and destroy) on GenieZone.
>>
>> Signed-off-by: Yingshiuan Pan <yingshiuan.pan@...iatek.com>
>> Signed-off-by: Yi-De Wu <yi-de.wu@...iatek.com>
>> ---
>>   arch/arm64/include/uapi/asm/gzvm_arch.h       |  79 ++++
>>   drivers/soc/mediatek/Kconfig                  |   2 +
>>   drivers/soc/mediatek/Makefile                 |   1 +
>>   drivers/soc/mediatek/virt/geniezone/Kconfig   |  17 +
> 
> Hypervisor drivers do not go to soc. Stop shoving there everything from
> your downstream. Find appropriate directory, e.g. maybe drivers/virt.

Acked, what is the reason you want to add this to drivers/soc instead of 
drivers/virt?

Regards,
Matthias

> See:
> https://lore.kernel.org/all/20230304010632.2127470-1-quic_eberman@quicinc.com/
> 
> You should follow that discussion as well and be sure that all concerns
> raised for Gunyah are solved also here.
> 
> Best regards,
> Krzysztof
>