HelenOS sources

PAT_TYPE_WRITE_COMBINING   46 kernel/arch/amd64/include/arch/mm/pat.h 	PAT_TYPE_WRITE_COMBINING = 1,
PAT_TYPE_WRITE_COMBINING   46 kernel/arch/ia32/include/arch/mm/pat.h 	PAT_TYPE_WRITE_COMBINING = 1,
HelenOS homepage, sources at GitHub