Daemon News Ezine BSD News BSD Mall BSD Support Forum BSD Advocacy BSD Updates

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[no subject]

The problem is that a DMA initiated by a bus mastering device
can only access as many bis of address space as are passed
through the bus, end-to-end.

For ISA, this ends up being a 16M limit; I think the 2G limit
on Alpha is because the limit is 32 bits, but there is some
signed math that should be unsigned.

-- Terry

To Unsubscribe: send mail to majordomo@xxxxxxxxxxx
with "unsubscribe freebsd-current" in the body of the message