Messages in this thread | | | Date | Fri, 26 Jun 2020 00:37:05 +0300 | From | Jarkko Sakkinen <> | Subject | Re: [PATCH v12 00/18] Enable FSGSBASE instructions |
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On Thu, Jun 25, 2020 at 11:27:28AM -0400, Don Porter wrote: > On 5/29/20 11:27 AM, Wojtek Porczyk wrote: > > On Thu, May 28, 2020 at 11:38:01AM -0700, Andy Lutomirski wrote: > > > One useful test for the actual kernel patches would be to run your SGX > > > workload on a loaded core. That is, do something like taskset -c > > > 0 graphene_thing and, simultaneously, write a trivial infinite loop program > > > and run that under taskset -c 0 as well. For good measure, you could have > > > perf top or perf record running at the same time. Look for kernel errors, > > > but also look for any evidence of your workload malfunctioning. > > > > We currently run as part of CI several workloads[1], among them LTP tests[2], > > and sometimes it's not pretty, because we encounter stability problems in > > Graphene+SGX even without the patchset. We'll pick some stable subset and > > will let know. Right now we'll have to retool CI for custom kernels, which > > will take some back and forth with uni's admins. > > > > [1] https://github.com/oscarlab/graphene/tree/master/Examples > > [2] https://github.com/oscarlab/graphene/tree/master/LibOS/shim/test/ltp > > > > Following up: we have been running a patched 5.7 kernel with v12 of this > series on one of our CI workers. As Wojtek mentions, infrastructure and > other orthogonal issues took some time. > > We have run our complete SGX testing pipelines successfully several times > with no issues: no errors in Graphene or suspicious kernel messages. > > I also did Andy's suggested test: > * Graphene running nginx pinned to core 0 > * infinite loop on core 0 > * perf top running > * Exercised with non-SGX apache bench several times (~10 minutes of testing > time) also from core 0 > > Again, no apparent issues, nothing in dmesg. I ran a similar setup with our > SGX-specific Graphene (PAL) unit tests. Same story: everything looks good. > > Let us know if we can be of any more help here. > > Thanks, > Don
Can unmodified Graphene-SGX used with these changes?
/Jarkko
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