Drivers: hv: balloon: Disable balloon and hot-add accordingly
Currently there are known potential issues for balloon and hot-add on
ARM64:
* Unballoon requests from Hyper-V should only unballoon ranges
that are guest page size aligned, otherwise guests cannot handle
because it's impossible to partially free a page.
* Memory hot-add requests from Hyper-V should provide the NUMA
node id of the added ranges or ARM64 should have a functional
memory_add_physaddr_to_nid(), otherwise the node id is missing
for add_memory().
These issues require discussions on design and implementation. In the
meanwhile, post_status() is working and essiential to guest monitoring.
Therefore instead of the entire hv_balloon driver, the balloon and
hot-add are disabled accordingly for now. Once the issues are fixed,
they can be re-enable in these cases.
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
1 file changed
