Re: [PATCH] Add SGX selftest `augment_via_eaccept_long`

[Jarkko Sakkinen <jarkko@kernel.org>]

On Tue, Aug 09, 2022 at 01:45:35PM +0300, Jarkko Sakkinen wrote:
> On Mon, Aug 08, 2022 at 06:29:13PM +0300, Jarkko Sakkinen wrote:
> > On Mon, Aug 08, 2022 at 01:00:54PM +0000, Dhanraj, Vijay wrote:
> > > 
> > > > -----Original Message-----
> > > > From: Jarkko Sakkinen <jarkko@kernel.org>
> > > > Sent: Monday, August 8, 2022 5:18 AM
> > > > To: Dhanraj, Vijay <vijay.dhanraj@intel.com>
> > > > Cc: linux-sgx@vger.kernel.org; Chatre, Reinette
> > > > <reinette.chatre@intel.com>; dave.hansen@linux.intel.com; Huang, Haitao
> > > > <haitao.huang@intel.com>
> > > > Subject: Re: [PATCH] Add SGX selftest `augment_via_eaccept_long`
> > > > 
> > > > On Thu, Aug 04, 2022 at 01:14:56PM -0700, vijay.dhanraj@intel.com wrote:
> > > > > From: Vijay Dhanraj <vijay.dhanraj@intel.com>
> > > > >
> > > > > This commit adds a new test case which is same as
> > > > > `augment_via_eaccept` but adds more number of EPC pages to stress test
> > > > `EAUG` via `EACCEPT`.
> > > > >
> > > > > Signed-off-by: Vijay Dhanraj <vijay.dhanraj@intel.com>
> > > > > Signed-off-by: Haitao Huang <haitao.huang@linux.intel.com>
> > > > 
> > > > Hey, to reproduce the original issue: does it reproduce on VM or should I run
> > > > baremetal kernel?
> > > > 
> > > > BR, Jarkko
> > > 
> > > Hi Jarkko, The issue should be reproducible on baremetal kernel.
> > 
> > Thanks.
> 
> I need comment out other tests in order to make sane out of this :-)
> 
> Mentioning this because came into realization that stress tests should
> be IMHO moved each to a separate binary (so that they can be run
> separately). Just a note (TODO) to myself.
> 
> I'll work on this today again and *possibly* split your test to its own
> application to get a starting point for forementioned.

I got

#  RUN           enclave.augment_via_eaccept_long ...
# main.c:1241:augment_via_eaccept_long:test enclave: total_size = 8192, seg->size = 8192
# main.c:1241:augment_via_eaccept_long:test enclave: total_size = 12288, seg->size = 4096
# main.c:1241:augment_via_eaccept_long:test enclave: total_size = 36864, seg->size = 24576
# main.c:1241:augment_via_eaccept_long:test enclave: total_size = 40960, seg->size = 4096
# main.c:1259:augment_via_eaccept_long:mmaping pages at end of enclave...
# main.c:1273:augment_via_eaccept_long:Entering enclave to run EACCEPT for each page of 8589934592 bytes may take a while ...
#            OK  enclave.augment_via_eaccept_long

The CPU used for testing was according to /proc/cpuinfo:

model name      : Intel(R) Xeon(R) Gold 6338 CPU @ 2.00GHz

I have couple of queries:

1. Is it possible to get dmesg output?
2. Do I have to repeat the test multiple times, or does it
   occur unconditionaly?

BR, Jarkko