On Thu, Aug 04, 2005 at 08:06:36AM -0700, Tom Rini wrote: > > > > Why can't you run on x86-64 early? > > As I said earlier: > " > > If you want to run gdb earlier you need to do it without a tasklet. > > We really would like to try again once stacks are setup (IOW, once > if ((&__get_cpu_var(init_tss))[0].ist[0])) is true). > " > > IOW, when we parse the params on x86_64 this isn't true (or rather it > wasn't true as of 2.6.9'ish, if this has changed I'd be glad to retest > things).
The ISTs are set up for the boot processor extremly early - even before start_kernel. But they are useless before trap_init() runs because you won't get any exceptions that need an IDT (or rather they will all still point to the early exception handler that just panics) -Andi - 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/