On Thu, Jul 19, 2007 at 03:33:58AM +0200, Andrea Arcangeli wrote: > On Thu, Jul 19, 2007 at 01:39:55AM +0100, Alan Cox wrote: > > > About 4k stacks I was generally against them, much better to fail in > > > fork than to risk corruption. The per-irq stack part is great feature > > > instead (too bad it wasn't enabled for the safer 8k stacks). > > > > 8K stacks without IRQ stacks are not "safer" so I don't understand your > > comment ? > > Ouch, see the reports about 4k stack crashes. I agree they're not > safe w/o irq stacks (like on x86-64), but they're generally safer.
Here's a way to make forward progress on this whole thing: Turn on irqstacks when using 8k stacks Detect when usage with 8k stacks would overrun a 4k stack when doing our stack switch and do a WARN_ONCE Fix up the damn bugs -- Mathematics is the supreme nostalgia of our time. - 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/