From: Konrad R. W. <kon...@or...> - 2009-10-19 13:46:45
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> X.org uses libpciaccess which tries to mmap with write combining enabled via > /sys/bus/pci/devices/*/resource0_wc. Currently, when PAT is not enabled, we > fall back to uncached mmap. Then libpciaccess thinks it succeeded mapping > with write combining anabled and does not set up suited MTRR entries. ;-( I am not familiar with libpciaccess, but I was wondering why that library cannot realize it failed in its endeavour and use other means to accomplish its goals? |