On Wed, Feb 25, 2015 at 10:15 PM, Wang Nan <[email protected]> wrote: > X86_TRAP_NMI, X86_TRAP_DF and X86_TRAP_MC use their own stack. Those > stacks are invalid until cpu_init() installs TSS. > > This patch moves setting of the 3 gates after cpu_init(). > > Signed-off-by: Wang Nan <[email protected]> > --- > > If I understand correctly, logically speaking the original code is > incorrect. However, there is no real bug caused by it for serval years. > I'm not sure whether this fix is practical or not. Fix them only for > logical correctness.
Acked-by: Andy Lutomirski <[email protected]> That being said, I'm pretty sure you're not fixing a bug here. Delivery of an exception with no handler is every bit as fatal as delivery of an exception with a non-working IST handler. --Andy -- 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/
