> Am 11.09.2020 um 21:36 schrieb Luck, Tony <tony.luck@xxxxxxxxx>: > > >> >> It's actually really hard to map a DIMM to a physical address. >> Interleaving can mean that one page actually spans a bunch of DIMMs. > > Heh! If NUMA mode is turned off your single page may have cache lines > from *every* DIMM in the system. Even with NUMA turned on the page > will have cache lines from every DIMM on the socket. > Thanks Dave and Tony, that‘s valuable information! How would it behave after hotplugging a single DIMM - I assume a single page will only be mapped to that DIMM (otherwise a lot of stuff would habe to be moved around. Would the mapping change after a reboot - especially can a DIMM that could get hotunplugged before suddenly no longer be hotunplugged individually? > -Tony
