linux-kernel - Re: [PATCH 4/6] selftests/sgx: Add SGX selftest augment_via_eaccept

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Date:   Fri, 2 Sep 2022 03:02:15 +0300
From:   Jarkko Sakkinen <jarkko@...nel.org>
To:     Reinette Chatre <reinette.chatre@...el.com>
Cc:     linux-sgx@...r.kernel.org,
        Haitao Huang <haitao.huang@...ux.intel.com>,
        Vijay Dhanraj <vijay.dhanraj@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Shuah Khan <shuah@...nel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/6] selftests/sgx: Add SGX selftest
 augment_via_eaccept_long

On Fri, Sep 02, 2022 at 03:00:36AM +0300, Jarkko Sakkinen wrote:
> On Thu, Sep 01, 2022 at 04:11:34PM -0700, Reinette Chatre wrote:
> > Hi Jarkko,
> > 
> > On 9/1/2022 3:16 PM, Jarkko Sakkinen wrote:
> > > On Wed, Aug 31, 2022 at 11:09:02AM -0700, Reinette Chatre wrote:
> > >> On 8/30/2022 7:28 PM, Jarkko Sakkinen wrote:
> > >>> On Tue, Aug 30, 2022 at 03:55:47PM -0700, Reinette Chatre wrote:
> > >>>> On 8/29/2022 8:12 PM, Jarkko Sakkinen wrote:
> > 
> > >>>> There seems to be at least three patches merged into one here:
> > >>>> 1) Update SGX selftests to create enclaves with provided size dedicated
> > >>>>    to EDMM (this change causes a lot of noise and distracts from the test
> > >>>>    addition).
> > >>>> 2) The mrenclave_ecreate() fix (which is still incomplete).
> > >>>> 3) The actual test addition.
> > >>>
> > >>> I would agree on this on a kernel patch but not for kselftest patch. It
> > >>> does not really give useful value here. This adds a test and that is a
> > >>> good enough granularity in my opinion, unless some major architecture
> > >>> work is required as precursory. It is not the case here.
> > >>
> > >> I must say that for many good reasons this goes against one of the
> > >> fundamental rules of kernel patches: separate logical changes into
> > >> separate patches. This is your domain though so of course the work
> > >> within it follows your guidance and I will not pursue it further.
> > > 
> > > I don't consider kselftest patch exactly same as kernel patch
> > 
> > You are not alone.
> > 
> > > but I can split this. What would be good enough?
> > 
> > I identified three candidate patches in my original response that
> > is quoted above, but as I mentioned I understand the sentiment
> > and this is your domain so I will not insist on it.
> 
> OK, fair enough, I'll rework on this. It's my domain but
> at least my own aim is always only satisfy on consensus
> :-)

I'll also split the patch set because this is not as urgent
as getting the fixes in. There will be separate fixes and
kselftest improvements patch sets.

BR, Jarkko