tree db947a7ef697187fbb39cea4690352ecef428eab
parent bfc2c2193d88e3e0e08a6f50e6d12ea9e854c815
author Barret Rhoden <brho@cs.berkeley.edu> 1570568897 -0400
committer Barret Rhoden <brho@cs.berkeley.edu> 1570569071 -0400

x86: clean up MSI handlers and vectors

With this change, drivers can deregister their IRQs, shut down their
devices, and reinitialize them.

Tested with MSI-X, but not MSI.  The IOAT device I have for testing is
MSI-X only.

Signed-off-by: Barret Rhoden <brho@cs.berkeley.edu>