linux-kernel - Re: [PATCH v3 00/17] Introducing Linux root partition support for Microsoft Hypervisor

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Message-ID: <87d94c39-e801-fbc6-8f7f-1f1b00fa719d@metux.net>
Date:   Tue, 15 Dec 2020 16:25:03 +0100
From:   "Enrico Weigelt, metux IT consult" <lkml@...ux.net>
To:     Wei Liu <wei.liu@...nel.org>
Cc:     Linux on Hyper-V List <linux-hyperv@...r.kernel.org>,
        virtualization@...ts.linux-foundation.org,
        Linux Kernel List <linux-kernel@...r.kernel.org>,
        Michael Kelley <mikelley@...rosoft.com>,
        Vineeth Pillai <viremana@...ux.microsoft.com>,
        Sunil Muthuswamy <sunilmut@...rosoft.com>,
        Nuno Das Neves <nunodasneves@...ux.microsoft.com>,
        sameo@...ux.intel.com, robert.bradford@...el.com,
        sebastien.boeuf@...el.com
Subject: Re: [PATCH v3 00/17] Introducing Linux root partition support for
 Microsoft Hypervisor

On 03.12.20 00:22, Wei Liu wrote:

Hi,

> I don't follow. Do you mean reusing /dev/kvm but with a different set of
> APIs underneath? I don't think that will work.

My idea was using the same uapi for both hypervisors, so that we can use
the same userlands for both.

Are the semantis so different that we can't provide the same API ?

> In any case, the first version of /dev/mshv was posted a few days ago
> [0].  While we've chosen to follow closely KVM's model, Microsoft
> Hypervisor has its own APIs.

I have to admit, I don't know much about hyperv - what are the main
differences (from userland perspective) between hyperv and kvm ?


--mtx

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Enrico Weigelt, metux IT consult
Free software and Linux embedded engineering
info@...ux.net -- +49-151-27565287