cvs commit: src/sys/conf files.amd64

[Nate Lawson]

On Sun, 23 May 2004, Bruce Evans wrote:
>   The SMP case hasn't been tested.  The high resolution subcase of this uses
>   the i8254, and as on i386's, the locking for this is deficient and the
>   i8254 is too inefficient.  The acpi timer is also too inefficient.

The ACPI timer is significantly better than it used to be.  It is
currently just a bus_space_read, which maps directly to inl.  The fact
that IO ports are slow is inescapable.

-Nate