[GIT PULL v1 00/23] KVM: s390: Misc KVM and vfio-ccw fixes

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

Ciao Paolo,

In this pull request there are a bunch of fixes to various KVM/s390 and
vfio-ccw issues.

There are still some small known bugs, which will be addressed later in
a different series.

The following changes since commit 9972befc3e34ff8b6847198c84f11bfc312dde40:

  KVM: s390: Fall back to short-term pinning in MAP ioctl (2026-07-27 09:23:53 +0200)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git tags/kvm-s390-master-7.2-3

for you to fetch changes up to feadc5e84dcb53422a437556c35af9efd9826fd5:

  KVM: s390: Fix cleanup in kvm_s390_pv_create_cpu() (2026-08-03 17:09:46 +0200)

----------------------------------------------------------------
KVM: s390: Misc fixes for 7.2

Fix a bunch of small issues that came up during the previous round of
fixes.

They are mostly extremely unlikely races, but they should be fixed
nonetheless.

----------------------------------------------------------------
Claudio Imbrenda (13):
      KVM: s390: Fix unlikely NULL gmap dereference
      KVM: s390: Do not free SCA if it was not allocated
      KVM: s390: Fix kvm_s390_vcpu_unsetup_cmma()
      KVM: s390: Fix overclearing ESCA in case of error
      KVM: s390: ucontrol: Fix sca_clear_ext_call()
      KVM: s390: Fix leaking of PGM_ADDRESSING to userspace
      KVM: s390: Fix race in __do_essa()
      KVM: s390: cmma: Fix dirty tracking when removing memslot
      KVM: s390: ucontrol: Add missing locking around gmap_remove_child()
      KVM: s390: Free the mmu cache when kvm_arch_vcpu_create() fails
      KVM: s390: Return -EINTR if a signal is pending while faulting-in
      KVM: s390: Fix ordering when adding to SCA
      KVM: s390: Fix cleanup in kvm_s390_pv_create_cpu()

Eric Farman (10):
      s390/vfio_ccw: Free all memory if cp_init() fails
      s390/vfio_ccw: Limit the number of channel program segments
      s390/vfio_ccw: Fix out of bounds check on CCW array
      s390/vfio_ccw: Ensure first IDAW remains constant
      s390/vfio_ccw: Calculate idal length based on idaw type
      s390/vfio_ccw: Ensure index for read/write regions are within range
      s390/vfio_ccw: Cancel existing workqueues
      s390/vfio_ccw: Move cp cleanup out of not operational
      s390/vfio_ccw: Selectively expand io_mutex
      s390/vfio_ccw: Implement a crw lock

 arch/s390/include/asm/kvm_host.h    |   1 +
 arch/s390/kvm/dat.c                 |  23 +++++--
 arch/s390/kvm/dat.h                 |   2 +-
 arch/s390/kvm/faultin.c             |   6 +-
 arch/s390/kvm/interrupt.c           |  19 ++++--
 arch/s390/kvm/kvm-s390.c            | 125 +++++++++++++++++++++++-------------
 arch/s390/kvm/priv.c                |  10 +--
 arch/s390/kvm/pv.c                  |  43 +++++++------
 drivers/s390/cio/vfio_ccw_async.c   |  16 +++++
 drivers/s390/cio/vfio_ccw_chp.c     |  31 +++++++--
 drivers/s390/cio/vfio_ccw_cp.c      |  74 +++++++++++++++------
 drivers/s390/cio/vfio_ccw_cp.h      |  10 +++
 drivers/s390/cio/vfio_ccw_drv.c     |  21 +++++-
 drivers/s390/cio/vfio_ccw_fsm.c     |   8 ++-
 drivers/s390/cio/vfio_ccw_ops.c     |  39 +++++++++--
 drivers/s390/cio/vfio_ccw_private.h |  10 ++-
 16 files changed, 320 insertions(+), 118 deletions(-)