Richard Weinberger writes: > Hi, > > I'm facing a very strange issue with gcc-4.6.0 and UML. > Within __local_bh_enable() gcc generates no code for sub_preempt_count(). > > See: > http://userweb.kernel.org/~rw/uml-gcc460/__local_bh_enable-gcc460.txt > vs. > http://userweb.kernel.org/~rw/uml-gcc460/__local_bh_enable-gcc431.txt > > Interestingly it generates code for add_preempt_count(). > I can reproduce this on x86 and x86_64. > > The problem has to do with UML's current_thread_info() function. > When I replace it with arch/x86's (unportable) variant gcc generates code. > > Any ideas whether this is a gcc or a kernel issue?
Please provide a standalone test case. ------------------------------------------------------------------------------ Benefiting from Server Virtualization: Beyond Initial Workload Consolidation -- Increasing the use of server virtualization is a top priority.Virtualization can reduce costs, simplify management, and improve application availability and disaster protection. Learn more about boosting the value of server virtualization. http://p.sf.net/sfu/vmware-sfdev2dev _______________________________________________ User-mode-linux-devel mailing list User-mode-linux-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-devel
