[lkml]   [2009]   [Apr]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] fsldma: use PCI Read Multiple command

>> Can you give me an example of non-PCI memory that would be
>> non-prefetchable that you'd like us to try? We can see if our
>> host CPUs have an area like that ... we just need to know
>> what device to look for first :)
> You can mark the pci inbound window on the 83xx as non-prefetchable
> (assuming 83xx is host). On a x86 host I doubt there is any easy way to
> get non-prefetchable memory.

Yep, we were going to do that, but chose to use the
1MB region already setup for the IMMRs since its already
marked as non-prefetchable. We were only doing reads, so
it wasn't going to hurt anything.

I doubt that marking one of the other BAR regions
as non-prefetchable will give a different result.
However, we're more than happy to double-check if
you'd like.


 \ /
  Last update: 2009-04-27 22:03    [W:0.078 / U:2.436 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site