On Mon, Oct 12, 2020 at 02:53:23PM +0200, David Hildenbrand wrote: >Let's add a safe mechanism to unplug memory, avoiding long/endless loops >when trying to offline memory - similar to in SBM. > >Fake-offline all memory (via alloc_contig_range()) before trying to >offline+remove it. Use this mode as default, but allow to enable the other >mode explicitly (which could give better memory hotunplug guarantees in >some environments). > >The "unsafe" mode can be enabled e.g., via virtio_mem.bbm_safe_unplug=0 >on the cmdline. > >Cc: "Michael S. Tsirkin" <[email protected]> >Cc: Jason Wang <[email protected]> >Cc: Pankaj Gupta <[email protected]> >Cc: Michal Hocko <[email protected]> >Cc: Oscar Salvador <[email protected]> >Cc: Wei Yang <[email protected]> >Cc: Andrew Morton <[email protected]> >Signed-off-by: David Hildenbrand <[email protected]>
Reviewed-by: Wei Yang <[email protected]> -- Wei Yang Help you, Help me
