tree 4ffa230638dd30ef0f82201b3c3a6945bc4f35fd
parent 6b331952f1bc2df61c98954e25578629c439e417
author Christian Borntraeger <borntraeger@de.ibm.com> 1409772193 +0200
committer Christian Borntraeger <borntraeger@de.ibm.com> 1410344382 +0200

KVM: s390/cmm: Fix prefix handling for diag 10 balloon

The old handling of prefix pages was broken in the diag10 ballooner.
We now rely on gmap_discard to check for start > end and do a
slow path if the prefix swap pages are affected:
1. discard the pages from start to prefix
2. discard the absolute 0 pages
3. discard the pages after prefix swap to end

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>