NOTE! The driver situation has improved, but is by no means perfect. Most
notably, there is no working aic7xx0 driver (aha2940 based cards) available
right now. Quite frankly, I can't fix this on my own, so I would really be
very grateful if somebody who has the hardware and the inclination would look
into it.
(I looked into it just enough to see that it's ugly: the scatter-gather lists
used by the SCSI code use virtual addresses, and the aic7xx0 controller code
uses those scatter-gather lists directly. The high-level SCSI code would
either have to use bus addresses instead of virtual addresses, or the aic7xx0
driver should do the translation either on the CPU or in the aic7xx0
assembly).
Most other drivers would seem to work, although some of them (like the xd
driver) haven't been tested.
Other than the virtual kernel address setup changes on x86, the 2.1.0 release
also changes the VFS interface (lseek/read/write get longer types). There are
also quite a lot of m68k-specific changes (but I'm waiting with the generic
m68k changes until the driver situation has calmed down a bit). There is also
a tentative patch for the pty problems people have reported (that will be fed
back to the 2.0.x tree too, but you can test it out in the 2.1.x series
first)
Linus