On Wed, Oct 09, 2013 at 08:08:05AM +0100, Wang, Yalin wrote: > I have a question about sdiv/ udiv instructions : > In armv7 A/R TRM, it said sdiv/udiv will cause > Divide by zero as undefined exception or just return zero > (decided by implementation) . > > So in kernel , should we need register a undef hook to > Get this undef exception and send SIGFPE to user space > Process ?
As far as I can see, this can only happen for R-class cores, based on SCTLR.DZ. Will -- 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/
