linux-kernel - Re: [PATCH v2 5/5] selftests/sgx: Add SGX selftest augment_via_eaccept

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Message-ID: <Yxp6kqvB5wzJCEYQ@kernel.org>
Date:   Fri, 9 Sep 2022 02:28:18 +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 v2 5/5] selftests/sgx: Add SGX selftest
 augment_via_eaccept_long

On Thu, Sep 08, 2022 at 03:44:29PM -0700, Reinette Chatre wrote:
> Hi Jarkko and Vijay,
> 
> On 9/4/2022 7:04 PM, Jarkko Sakkinen wrote:
> > From: Vijay Dhanraj <vijay.dhanraj@...el.com>
> > 
> > Add a new test case which is same as augment_via_eaccept but adds a
> > larger number of EPC pages to stress test EAUG via EACCEPT.
> > 
> > Signed-off-by: Vijay Dhanraj <vijay.dhanraj@...el.com>
> > Signed-off-by: Jarkko Sakkinen <jarkko@...nel.org>
> > ---
> 
> ...
> 
> > diff --git a/tools/testing/selftests/sgx/main.c b/tools/testing/selftests/sgx/main.c
> > index 78c3b913ce10..e596b45bc5f8 100644
> > --- a/tools/testing/selftests/sgx/main.c
> > +++ b/tools/testing/selftests/sgx/main.c
> > @@ -22,8 +22,10 @@
> >  #include "main.h"
> >  
> >  static const size_t ENCL_HEAP_SIZE_DEFAULT = PAGE_SIZE;
> > +static const unsigned long TIMEOUT_DEFAULT = 900;
> 
> I am not sure about the naming here ... it is _very_ close to
> (and thus appears to be in the same namespace as)
> TEST_TIMEOUT_DEFAULT from the included kselftest_harness.h.
> 
> This is surely a nitpick but how about SGX_TEST_TIMEOUT_DEFAULT?

Agreed, I would use ENCL_TEST_TIMEOUT_DEFAULT (better match
with existing names).

> 
> >  static const uint64_t MAGIC = 0x1122334455667788ULL;
> >  static const uint64_t MAGIC2 = 0x8877665544332211ULL;
> > +
> 
> There is an extra empty line here ... but it looks like intended code
> organization?

Yeah, I think it'd make sense to have it there and would
not be productive to make it a separate patch.

> 
> >  vdso_sgx_enter_enclave_t vdso_sgx_enter_enclave;
> >  
> >  /*
> 
> 
> Apart from the naming comment this addition looks good. 
> 
> This is a valuable addition to the SGX tests.
> 
> Reinette

Thank you.

BR, Jarkko