Michael Ellerman <m...@ellerman.id.au> writes: > Nathan Lynch <nath...@linux.ibm.com> writes: >> "Aneesh Kumar K.V" <aneesh.ku...@linux.ibm.com> writes: >>>> Just checking: do people still need numa=off? Seems like it's a >>>> maintenance burden :-) >>>> >>> >>> That is used in kdump kernel. >> >> I see, thanks. > > That doesn't mean it's a good idea :) > > Does it actually reduce memory usage much? Last time I dug into the > kdump kernel's usage of weird command line flags none of them really did > anything useful.
I think it's intended to work around bugs in numa initialization, e.g. https://www.suse.com/support/kb/doc/?id=7023399 Hopefully the original bug with numa/kdump interaction has been fixed?
