K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2007-08-15T21:12:08.000000Z
K 7
svn:log
V 619
MFC: Partial MFC of earlier minor fixes and tweaks to x86 interrupt code:
- Add a new nexus hook: nexus_add_irq() to ask the nexus driver to add an
  IRQ to its irq_rman.  The MSI code uses this when it creates new
  interrupt sources to let the nexus know about newly valid IRQs.
  Previously the msi_alloc() and msix_alloc() passed some extra stuff
  back to the nexus methods which then added the IRQs.  This approach is
  a bit cleaner.
- Change the MSI sx lock to a mutex.  If we need to create new sources,
  drop the lock, create the required number of sources, then get the lock
  and try the allocation again.

END