Hi... On Wed, Feb 20, 2008 at 2:59 PM, srimugunthan dhandapani <muggy.mit@xxxxxxxxx> wrote: > Hi all, > Can anyone explain why floating point operations are not allowed in kernel > mode? Not sure if it does help you, but IMHO think like this: user-to-kernel or vice versa already does costly FPU saving/restoring. Now imagine same thing happen in kernel mode only, whether it's interrupt-to-normal mode, interrupt being interrupted....in short between any possible kind of kernel path codes. Can you imagine the latency that might show up? So instead letting the kernel does this FPU saving/restoring operation, the developers simply decide to forbid it. regards, Mulyadi. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
