linux-kernel - Re: [PATCH 00/14] selftests/sgx: Oversubscription, page permission, thread entry

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Date:   Thu, 16 Sep 2021 08:37:03 -0700
From:   Dave Hansen <dave.hansen@...el.com>
To:     Reinette Chatre <reinette.chatre@...el.com>,
        linux-sgx@...r.kernel.org, jarkko@...nel.org, shuah@...nel.org
Cc:     seanjc@...gle.com, bp@...en8.de, dave.hansen@...ux.intel.com,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/14] selftests/sgx: Oversubscription, page permission,
 thread entry

On 9/15/21 1:30 PM, Reinette Chatre wrote:
> This series consists out of outstanding SGX selftests changes, rebased
> and gathered in a single series that is more easily merged for testing
> and development, and a few more changes added to expand the existing tests.

One other high-level thing we should probably mention: Building and
running enclaves is a pain.  It's traditionally required a big SDK from
Intel or a big software stack from *somebody* else.

This adds features like threads to the SGX selftest which are
traditionally implemented in that big software stack.  This is a *good*
thing since it helps test SGX kernel support with only code from the
kernel tree.

This is similar to what we did with MPX, which also typically required a
big toolchain outside of the kernel.  Despite MPX's demise, I think this
approach worked well, and I'm happy to see it replicated here.

Feel free to add my ack on the real (non-stub) patches in the series:

Acked-by: Dave Hansen <dave.hansen@...ux.intel.com>