Hi! Am 02.06.2014 11:05, schrieb Sébastien Frémal: > Hello, > > Thank you for these informations, it helps me to understand how skas works. I > read on the skas website that "This also provides a noticable speedup by > eliminating the signal > delivery that used to happen for every UML system call." I read that UML > processes (in TT mode) in user space were controlled with signals (especially > to do the transition between > the user mode and the kernel mode). The presentation of skas suggests that > this transition and communications between UML and its processes are not > executed anymore with signals. > Do you know what is used instead ?
In SASK0 mode UML controls the guest processes using the stub pages. Every guest process has two installed where the UML kernel can inject commands. Just grep the sources for STUB_CODE and STUB_DATA. Thanks, //richard ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. Written by three acclaimed leaders in the field, this first edition is now available. Download your free book today! http://p.sf.net/sfu/NeoTech _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
