![]() | |||||||||||
Messages in this thread |
Frans Pop wrote: > On Saturday 14 June 2008, Rafael J. Wysocki wrote:> > The following bug entry is on the current list of known regressions > > from 2.6.25. Please verify if it still should be listed. > >> > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10843> > Subject : Display artifacts on XOrg logout with PAT kernel and VESA > > framebuffer > > Submitter : Frans Pop <elendil@planet.nl> > > Date : 2008-05-31 14:04 (15 days old) > > References : http://lkml.org/lkml/2008/6/7/206>> Yes. See also: http://lkml.org/lkml/2008/6/13/159 Frans, With or with out pat, in the recent kernels (like 2.6.26-rc4/rc5 etc), ioremap() uses UC- and PCI mmap of /sys/devices/pci.../resource (used by X) uses UC- And fb_mmap() also uses UC-. It's interesting that you don't see this artifact with "nopat". Essentially with or with out pat enabled, we use the same memory attributes. So depending on the MTRR setup (set by X server), effective memory attribute across different mappings should be same (which is UC- or WC with mtrr). Can you also check, if there is any impact with kernel boot param for vesafb "mtrr:3"? thanks, suresh | ||||||||||
| Last update: 2008-06-15 21:33 [from the cache] ©2003-2008 | |||||||||||