linux-kernel - Re: [RFC v1 1/2] crypto: tcrypt: minimal conversion to run under KUnit

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Date:   Fri, 23 Jul 2021 14:43:28 +0800
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Daniel Latypov <dlatypov@...gle.com>
Cc:     davem@...emloft.net, linux-crypto@...r.kernel.org,
        brendanhiggins@...gle.com, davidgow@...gle.com,
        linux-kernel@...r.kernel.org, kunit-dev@...glegroups.com
Subject: Re: [RFC v1 1/2] crypto: tcrypt: minimal conversion to run under
 KUnit

On Thu, Jul 15, 2021 at 02:31:37PM -0700, Daniel Latypov wrote:
>> == Questions ==
> * does this seem like it would make running the test easier?

I don't mind.  tcrypt these days isn't used so much for correctness
testing.  It's mostly being used for speed testing.  A secondary
use is to instantiate templates.

> * does `tvmem` actually need page-aligned buffers?

I think it may be needed for those split-SG test cases where
we deliberately create a buffer that straddles a page boundary.

> * I have no clue how FIPS intersects with all of this.

It doesn't really matter because in FIPS mode when a correctness
test fails the kernel panics.

>   * would it be fine to leave the test code built-in for FIPS instead of
>   returning -EAGAIN?

The returning -EAGAIN is irrelevant in FIPS mode.  It's more of
an aid in normal mode when you use tcrypt for speed testing.

Thanks,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt