Am Dienstag, 4. Februar 2014, 17:39:57 schrieb Hannes Frederic Sowa: Hi Hannes,
>On Tue, Feb 04, 2014 at 05:19:52PM +0100, Stephan Mueller wrote: >> Also, I consider the execution speed of the entropy collection is not >> really an issue because the RNG delivers random numbers at a >> comparatively high rate. Any other noise source feeding into random.c >> delivers data with far less speed. > >Compiling the kernel with -O0 could add some other problems, like I thought with the given flag, I only compile the respective C file without optimizations, but not the entire kernel. Am I wrong here? >e.g. not doing enough constant folding which could result in linking >errors. I guess it is not a problem currently though, but some of the >compile time checks depend on this (compiletime_assert and such). How do you think that my folding code can cause linking errors? > >Have you looked into adding compiler barriers into relevant places in >the loops to stop the compiler from optimizing and spill out the >values from the registers to their memory locations? I did not look into that one, let me have a look. > >Greetings, > > Hannes Ciao Stephan -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
