Messages in this thread | | | Date | Fri, 6 Apr 2001 20:34:40 +0200 | From | Andrea Arcangeli <> | Subject | Re: [Linux-fbdev-devel] Re: fbcon slowness [was NTP on 2.4.2?] |
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On Fri, Apr 06, 2001 at 07:27:24PM +0200, Maciej W. Rozycki wrote: > [..] You normally have > non-cached locations buffered (since you don't always need peripheral > device accesses to be posted immediately) and can force a writeback with a > memory barrier. [..]
ev6 works the way you described AFIK (to flush the write buffer you can use wmb(), note that wmb() semantics doesn't require the cpu to really "flush" but just to keep writes oredered across other mb or wmb, but it's basically the same from a software point of you and flushing the write buffer synchronously obviously provides that semantics). I didn't followed very closely the previous part of the thread so I'm not sure what is the issue.
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