linux-kernel - RE: [PATCH Part2 v6 13/49] crypto:ccp: Provide APIs to issue SEV-SNP commands

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Message-ID: <SN6PR12MB2767CD108EBA7BE5D027330D8E5B9@SN6PR12MB2767.namprd12.prod.outlook.com>
Date:   Mon, 3 Oct 2022 18:43:08 +0000
From:   "Kalra, Ashish" <Ashish.Kalra@....com>
To:     Borislav Petkov <bp@...en8.de>, Peter Gonda <pgonda@...gle.com>
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Subject: RE: [PATCH Part2 v6 13/49] crypto:ccp: Provide APIs to issue SEV-SNP
 commands

[AMD Official Use Only - General]

>> We already have sev_issue_cmd_external_user() exported right?
>> 
>> Another option could be to make these wrappers more helpful and less 
>> silly.

>For example.

>My point is, whenever something needs to issue a SEV* fw command, something adds a silly wrapper and this will become unwieldy pretty quickly.

>If a wrapper is not a dumb one but it actually does preparatory work before issuing the command so that the caller's life is made easy, then yes, by all means.

>If it is only plain forwarding a call to sev_do_cmd(), then I question the whole point of the exercise...

Well, these all were added as APIs to serve as a abstraction for SEV/SNP guest, and probably it is nice to have an abstracted interface, but I have no issues
with replacing these simply with calls to sev_do_cmd().

Thanks,
Ashish