Am Freitag, den 13.07.2012, 16:18 +0200 schrieb Hans J. Koch: > If somebody maps the card's memory through the UIO driver and somebody > else also maps it using sysfs, that is possible. What happens if both > write to the same hardware registers is a different topic. Writing a > driver implies some responsibility, even if it's done in userspace.
That's true and I would not complain. I'm just saying that there is the possibility to disturb a kernel driver by mapping memory etc. I think it is worth to considerate moving the BAR mapping code to UIO. Especially, when I look at the discussions about what effects mappable DMA memory can have on the system security. -- Gruß Dominic -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
