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Date:   Sun, 27 Jun 2021 12:00:04 +0000
From:   Wei Liu <wei.liu@kernel.org>
To:     Nuno Das Neves <nunodasneves@linux.microsoft.com>
Cc:     linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
        virtualization@lists.linux-foundation.org, mikelley@microsoft.com,
        viremana@linux.microsoft.com, sunilmut@microsoft.com,
        wei.liu@kernel.org, vkuznets@redhat.com, ligrassi@microsoft.com,
        kys@microsoft.com
Subject: Re: [PATCH 03/19] drivers/hv: minimal mshv module (/dev/mshv/)
Message-ID: <20210627120004.u4pn3stgcny2zl4i@liuwe-devbox-debian-v2>
References: <1622241819-21155-1-git-send-email-nunodasneves@linux.microsoft.com>
 <1622241819-21155-4-git-send-email-nunodasneves@linux.microsoft.com>
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On Fri, May 28, 2021 at 03:43:23PM -0700, Nuno Das Neves wrote:
[...]
> +
> +static int
> +__init mshv_init(void)
> +{
> +	int ret;

Please check if Linux is running on Microsoft Hypervisor here. If not,
this module should not be loaded.

Something like:

       if (!hv_is_hyperv_initialized())
               return -ENODEV;

Wei.