linux-kernel - Re: [PATCH] virt: sev-guest: Add MODULE

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Date:   Mon, 7 Nov 2022 08:09:08 -0600
From:   Tom Lendacky <thomas.lendacky@....com>
To:     Cole Robinson <crobinso@...hat.com>, Borislav Petkov <bp@...e.de>
Cc:     linux-coco@...ts.linux.dev, linux-kernel@...r.kernel.org,
        brijesh.singh@....com
Subject: Re: [PATCH] virt: sev-guest: Add MODULE_ALIAS

On 11/5/22 11:08, Cole Robinson wrote:
> On 11/4/22 4:53 PM, Borislav Petkov wrote:
>> On Fri, Nov 04, 2022 at 04:42:45PM -0400, Cole Robinson wrote:
>>> This fixes driver autoloading
>>
>> What is the scenario where this needs to be autoloaded?
>>
> 
> Any use case that needs /dev/sev-guest, I guess. Saves software from
> having to do the modprobe manually. For example, nothing I can find in
> https://github.com/AMDESE/sev-guest loads the driver, it expects
> /dev/sev-guest to be there already
> 
> Mostly I assumed lack of autoloading was an oversight. Was it
> intentionally omitted?

It probably was an oversight. To me, it makes sense to auto-load the 
module if the SNP support created the platform device as part of SNP 
initialization.

Thanks,
Tom

> 
> Thanks,
> Cole
>