On 09/10/2015 03:35 PM, Ross Philipson wrote: > I have been working on moving our project from TBOOT 1.7.0 to 1.8.3. I > have discovered that while our 1.7.0 version of TBOOT resumes from S3 > just fine, 1.8.3 does not. > > The most common symptom seems to be a hang just after TBOOT enters SMX > mode. The hang happens at different places so I don't think it is one > specific thing that TBOOT is doing to cause the hang. The hang can be > short (on the order of seconds) or longs (several minutes). Then > suddenly the platform will "unhang". It looks like the platform restarts > quickly and goes right back in to TBOOT but it is a little hard to tell > exactly what happens right around this point. We see this on every > system we have tried it on. > > I have backed all our patches out and I still see the problem with a > clean 1.8.3 code base. I have also tried using TBOOT with a Debian > Jessie install and I get similar problems there. I have been comparing > the code between the version and have so far not found anything that > makes a difference. > > Any help in this matter is appreciated. > Thanks
I spent some time tracking this down today. If I build without these two patches, I no longer get a hang on resume from S3: http://hg.code.sf.net/p/tboot/code/rev/9040e000ccc4 http://hg.code.sf.net/p/tboot/code/rev/78713e04bdd9 I have not identified the exact cause yet but I wanted to get these results posted to the list. Thanks -- Ross Philipson ------------------------------------------------------------------------------ _______________________________________________ tboot-devel mailing list tboot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/tboot-devel
