[GIT PULL] KVM fixes for Linux 7.0-rc6

[Paolo Bonzini]

Linus,

The following changes since commit 0138af2472dfdef0d56fc4697416eaa0ff2589bd:

  Merge tag 'erofs-for-7.0-rc6-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs (2026-03-25 18:41:35 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/virt/kvm/kvm.git tags/for-linus

for you to fetch changes up to df83746075778958954aa0460cca55f4b3fc9c02:

  KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE (2026-03-27 22:33:33 +0100)

----------------------------------------------------------------
s390:

* Lots of small and not-so-small fixes for the newly rewritten gmap,
  mostly affecting the handling of nested guests.

x86:

* Fix an issue with shadow paging, which causes KVM to install an MMIO PTE
  in the shadow page tables without first zapping a non-MMIO SPTE if KVM
  didn't see the write that modified the shadowed guest PTE.  While commit
  a54aa15c6bda3 was right about it being impossible to miss such a write
  if it was coming from the guest, it failed to account for writes to
  guest memory that are outside the scope of KVM: if userspace modifies
  the guest PTE, and then the guest hits a relevant page fault, KVM will
  get confused.

----------------------------------------------------------------
Claudio Imbrenda (10):
      KVM: s390: vsie: Fix dat_split_ste()
      KVM: s390: Remove non-atomic dat_crstep_xchg()
      KVM: s390: vsie: Fix check for pre-existing shadow mapping
      KVM: s390: Fix gmap_link()
      KVM: s390: Correctly handle guest mappings without struct page
      KVM: s390: vsie: Fix nested guest memory shadowing
      KVM: s390: vsie: Fix refcount overflow for shadow gmaps
      KVM: s390: vsie: Fix unshadowing while shadowing
      KVM: s390: vsie: Fix guest page tables protection
      KVM: s390: Fix KVM_S390_VCPU_FAULT ioctl

Paolo Bonzini (1):
      Merge tag 'kvm-s390-master-7.0-2' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

Sean Christopherson (2):
      KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE
      KVM: x86/mmu: Only WARN in direct MMUs when overwriting shadow-present SPTE

 arch/s390/kvm/dat.c      | 100 +++++------------------------
 arch/s390/kvm/dat.h      |  23 +++----
 arch/s390/kvm/gaccess.c  |  71 +++++++++++++++------
 arch/s390/kvm/gmap.c     | 160 +++++++++++++++++++++++++++++++++--------------
 arch/s390/kvm/gmap.h     |  33 ++++++----
 arch/s390/kvm/kvm-s390.c |  18 +++++-
 arch/s390/kvm/vsie.c     |   4 +-
 arch/x86/kvm/mmu/mmu.c   |  17 ++---
 8 files changed, 241 insertions(+), 185 deletions(-)