On 03/28/2010 12:40 PM, Michael S. Tsirkin wrote:
uio accepts 32 bit writes to the char device file. We can encode
the fd number there, and use the high bit to signal assign/deassign.
Ugh. Very unexpandable.
It currently fails on any non-4 byte write.
So if we need more bits in the future we can always teach it
about e.g. 8 byte writes.
Do you think it's worth it doing it now already, and using
8 byte writes for msi mapping?
Aren't ioctls a lot simpler?
Multiplexing multiple functions on write()s is just ioctls done uglier.
--
error compiling committee.c: too many arguments to function
