jhb 1dfdfa5677 Cache the value of the lower half of each I/O APIC redirection table entry
so that we only have to do an ioapic_write() instead of an ioapic_read()
followed by an ioapic_write() every time we mask and unmask level triggered
interrupts.  This cuts the execution time for these operations roughly in
half.

Profiled by:	Paolo Pisati <p.pisati@oltrelinux.com>
MFC after:	1 week
2006-04-05 20:43:19 +00:00
..
2006-04-03 23:56:40 +00:00
2006-04-04 20:20:51 +00:00
2006-04-02 04:24:57 +00:00
2006-01-30 16:32:08 +00:00