Re: [Part2 PATCH v6 13/38] crypto: ccp: Add Secure Encrypted Virtualization (SEV) command support

[Brijesh Singh]

On 10/27/17 3:15 PM, Borislav Petkov wrote:
> On Fri, Oct 27, 2017 at 06:28:38AM -0500, Brijesh Singh wrote:
>> ... User can retry the command sometime later when nobody else is
>> using the PSP.
> That still doesn't prevent you from doing two things:
>
> * make that fw_init_count a proper kref instead of your homegrown thing

OK, I can use kref in next patch.

>
> * do not preemptively execute commands on the PSP if you can't possibly
> know what the next command is going to be - instead, just put it in the
> required state only when you really have to. I.e., don't do all that
> unnecessary INIT -> CMD -> SHUTDOWN game for no reason.

Yep, we are doing state transition only when we really need to. At least
so far I have tried to avoid making any unnecessary state transitions.

> Thx.
>