Date: Thu, 20 Jul 2000 15:11:16 -0400 (EDT) From: Andrew Gallatin <gallatin@cs.duke.edu> To: mjacob@feral.com Cc: freebsd-alpha@freebsd.org Subject: Re: fxp0 hangs on a PC164 using STABLE Message-ID: <200007201911.PAA15726@gale.cs.duke.edu>
next in thread | raw e-mail | index | archive | help
On the last, (putting in a memory barrier) -- I object because its implicit in the atomic instructions & would be totally superfulous. An addition to the comment to point this out might be appropriate though.. WRT memory barriers on i86 -- I though that writes to device memory space were uncachable & flushed the write buffers unless an mtrr was set up for the region & it was made cacheable. I defer to the i86 experts.. As for flushing writes to main memory for better device communication, I have no clue.. Drew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200007201911.PAA15726>