forked from luck/tmp_suning_uos_patched
4b06504627
This change resolves the problem of too many single page entries in pat_memtype_list and "freeing invalid memtype" errors with i915, reported here: http://marc.info/?l=linux-kernel&m=123845244713183&w=2 Remove page level granularity track and untrack of vm_insert_pfn. memtype tracking at page granularity does not scale and cleaner approach would be for the driver to request a type for a bigger IO address range or PCI io memory range for that device, either at mmap time or driver init time and just use that type during vm_insert_pfn. This patch just removes the track/untrack of vm_insert_pfn. That means we will be in same state as 2.6.28, with respect to these APIs. Newer APIs for the drivers to request a memtype for a bigger region is coming soon. [ Impact: fix Xorg startup warnings and hangs ] Reported-by: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com> Tested-by: Arkadiusz Miskiewicz <a.miskiewicz@gmail.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> LKML-Reference: <20090408223716.GC3493@linux-os.sc.intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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