@Andi -- I already did the first step with slightly improved patches:
http://marc.info/?m=129086507505163
Unfortunately the ioremap_{wc,cache,nocache} functions seem not to be
supported by all the architectures where [u]vesafb build. Paul Mundt
recognized it, and now I'm looking if I can establish these functions
for all architectures, or at least be sure to correctly use fall-back
functions.
As I'm quite busy now with my daily work, this may have to wait a bit...
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https://bugs.launchpad.net/bugs/574733
Title:
serve Xorg performance penalty due to [u]vesafb creating wrong PAT
entries
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