> Am 11.09.2020 um 22:09 schrieb Luck, Tony <tony.luck@xxxxxxxxx>: > > >> >> 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? > > > We don't currently have any platforms that would allow hot adding at the DIMM level. > The Brickland generation of E7 Xeon servers (Ivybridge, Haswell, Broadwell) allowed > for hot plugging a riser card that contained up to 12 DIMMs. > > If you did add memory it would have to appear at the top of the system physical > address space. No interleave (unless you added more than one DIMM in a single > operation). After a reboot the system would likely shuffle things around to and > interleave. > Thanks a lot - so I‘m really spoiled by hot(un)plug capabilities in virtualized environments :D > -Tony
