[PATCH v5 0/7] KVM: s390: Misc bugfixes for 7.4

[Claudio Imbrenda <imbrenda@linux.ibm.com>]

Misc bugfixes.

Some Fixes tags are approximate, since the bugs arise from slow changes
behind the scenes in the kernel, and not from an actual bug at the moment
of the introduction of the original code.

v4->v5:
* fix check gmap_unmap_gfn_range_fast()
* refactor and rename the function to enable cmma, now have a lockless
  version called gmap_enable_cmm_already_locked() and a wrapper called
  gmap_enable_cmm() that performs the locking
* fix missing DAT_WALK_USES_SKEYS flag
* fix some comments

v3->v4:
* oops! some stuff removed in the previous iteration was actually needed
* improve patch descriptions
* fix idte_crste() clobber and table type (partially picked from v2)
* s/IPTE_GUEST_ASCE/IDTE_GUEST_ASCE/ when using idte_crste()
* improve comments in gmap_unmap_gfn_range()
* do not attempt unmapping prefixes if the unmap range is above 2G
* remove useless !hpa check in pin_blocks()
* fix cmma issue when using large pages that caused the whole guest
  memory to be allocated

v2->v3:
* remove all non-bugfix patches
* rebase onto master

v1->v2:
* add "memory" clobber to idte_crste()
* remove superflouos gpa parameter for unpin_scb()
* clear the zero bit in the PGSTE when unmapping, add missing barrier


Claudio Imbrenda (7):
  KVM: s390: Fix UCONTROL inconsistencies
  KVM: s390: Move some skey functions to headers
  KVM: s390: Fix idte_crste() clobber and table type
  KVM: s390: Improve unmapping of large ranges
  KVM: s390: vsie: Fix pinning using the wrong flag
  KVM: s390: Introduce gmap_enable_cmm()
  KVM: s390: Allocate page tables when CMMA is used

 arch/s390/kvm/gmap/dat.c  |  26 -----
 arch/s390/kvm/gmap/dat.h  |  48 +++++++-
 arch/s390/kvm/gmap/gmap.c | 227 +++++++++++++++++++++++++++++++-------
 arch/s390/kvm/gmap/gmap.h |  11 ++
 arch/s390/kvm/s390/priv.c |   8 +-
 arch/s390/kvm/s390/s390.c |   4 +-
 arch/s390/kvm/s390/vsie.c | 135 ++++++++---------------
 7 files changed, 299 insertions(+), 160 deletions(-)

-- 
2.56.0