Atsushi Nemoto wrote: > Here's my understanding. > > CPHYSADDR --- used to convert a CKSEG0 or CKSEG1 to a physical > address. Be carefull when use it in 64-bit kernel. > > __pa() --- inverse of __va(), of course :-) used to convert a kernel > linear logical address to a physycal address. > > virt_to_phys() --- synonym of __pa() ? Well in my understanding __pa() is used during bootmem init. It deals with initialisation issues and ugliness and that's what CPHYSADDR() actually does. virt_to_phys() is used once everything is correctly setup. > __pa() is used in many place indirectly via virt_to_page(). > what about make virt_to_page() use virt_to_phys() instead ? Franck
