http://bugzilla.novell.com/show_bug.cgi?id=549923
User eich@novell.com added comment
http://bugzilla.novell.com/show_bug.cgi?id=549923#c14
Egbert Eich changed:
What |Removed |Added
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AssignedTo|eich@novell.com |gregkh@novell.com
--- Comment #14 from Egbert Eich 2009-11-11 03:55:36 MST ---
The issue can be worked around in libpciaccess by simply commenting out:
/* For WC mappings, try sysfs resourceN_wc file first */
if ((map->flags & PCI_DEV_MAP_FLAG_WRITE_COMBINE) &&
!pci_device_linux_sysfs_map_range_wc(dev, map))
return 0;
and thus regaining the behavior of 11.1. The libpciaccess patch in attachment
#324942 sets mtrrs on a wc mapped range. I don't believe this is a good idea.
I believe the method suggested in comment #10 is the best solution. Of course
we can always hack libpciaccess.
Reassigning to Greg.
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