From: Dave Young on
gitlab.com
https://gitlab.com/cki-project/kernel-ark/-/merge_requests/1171#note_6159...
Hi Kairui, it worth to say more about the reason of the update from 1G-4G to
0G-4G:
* originally we have another RHEL only patch to round up the memblock
collected system ram size by 128M because the memblock total size usually less
than actual dimm size. Moving to 0-4G we can safely work without that patch.
* the RHEL installtion minimum mem requirement is 1.5G for RHEL8, so we expect
this will not have extra adding impact for small memory systems.
But anyway if virt people can confirm about the minimum memory requirement is
=1G it would be great.