Arjan van de Ven <[EMAIL PROTECTED]> writes: > > I'm btw all in favor of making mmio tracing full fledged kernel > infrastructure. > This doesn't mean "notifier" imo; this means a real flag in the struct page, > and then the page fault code can do > > if (page->flags & FLAG_MMIO_TRACED) > mmio_trace(page, regs, whatever..); > > (probably surrounded by a CONFIG_ ifdef) > THis is a TON lighter than a notifier chain, and actually what you want, > you don't really want a notifier, you want a call back when a special kind of > page is touched.
That would assume that your mmio area has a struct page. In most PCs the ones in the PCI hole don't -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/
