Messages in this thread | | | Date | Thu, 30 Jul 2009 11:07:47 +0200 | From | Pavel Machek <> | Subject | Re: [PATCH] x86: Use clflush() instead of wbinvd() whenever possible when changing mapping |
| |
On Fri 2009-07-24 09:53:01, Thomas Hellstrom wrote: > The current code uses wbinvd() when the area to flush is > 4MB. Although this > may be faster than using clflush() the effect of wbinvd() on irq > latencies
You are slowing the kernel down, and you did not write down the reasons. bad.
-- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
| |