Re: AMD Geode LX Security Block (was Re: NetBSD on the Soekris net5501 status report)
Thor Lancelot Simon <[email protected]>
| Newsgroups | gmane.os.netbsd.devel.crypto |
|---|---|
| Message-ID | <20070618233153.GA20373__18813.1016250283$1182209960$gmane$org@panix.com> |
On Mon, Jun 18, 2007 at 04:14:54PM -0700, Jason Thorpe wrote: > > That said, my examination of the code revealed a busy-wait in the > glxsb driver waiting for the AES operation to complete, which includes > a bus_space_read_4() in the tight (without delay) loop. > > Seems like that ought to use a callout instead. Oh, I've been down this road (painfully) with other accellerators. Unless you're going to run the system at very high HZ you can't really use a callout unless you want awful single-stream performance. With this accellerator interrupt-driven mode might be the way to go. -- Thor Lancelot Simon [email protected] "All of my opinions are consistent, but I cannot present them all at once." -Jean-Jacques Rousseau, On The Social Contract