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Date:   Fri, 23 Jul 2021 12:38:27 +0200
From:   Greg KH <>
To:     Luis Chamberlain <>
Cc:     Shuah Khan <>,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
Subject: Re: [PATCH v2 1/4] selftests: add tests_sysfs module

On Thu, Jul 22, 2021 at 03:34:49PM -0700, Luis Chamberlain wrote:
> kunit relies on UML and UML is a simple one core architecture, to start
> with.

I thought the UML requirement was long gone, are you sure it is still

> This means I cannot run tests for multicore with it, which is
> where many races do happen! Yes, you can run kunit on other
> architectures, but all that is new.

What do you mean by "new"?  It should work today, in today's kernel
tree, right?

> In this case kunit is not ideal given I want to mimic something in
> userspace interaction, and expose races through error injection and
> if we can use as many cores to busy races out.

Can you not do that with kunit?  If not, why not?


greg k-h

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