Merge branch kvm-arm64/nv-mmu-7.2 into kvmarm-master/next

* kvm-arm64/nv-mmu-7.2:
  : .
  : Assorted collection of fixes for NV MMU bugs
  :
  : - Correctly plug AT S1E1A handling in the emulation backend
  :
  : - Make CPTR_EL2.E0POE depend on FEAT_S1POE
  :
  : - Drop the reference on the page if the VNCR translation
  :   races with an MMU notifier
  :
  : - Correctly synthesise an SEA if a page table walk fails due
  :   to a guest error
  :
  : - Fully invalidate the VNCR TLB and fixmap when translating
  :   for a new VNCR
  :
  : - Restart S1 walk when the S2 walk fails due to a race condition
  :
  : - Correctly return -EAGAIN when a S1 walk fails
  :
  : - Fix block mapping validity check in stage-1 walker for 64kB pages
  :
  : - Fix potential NULL dereference when performing an EL2 TLBI targeting
  :   the VNCR page
  :
  : - Hold kvm->mmu_lock while initialising the vncr_tlb pointer
  : .
  KVM: arm64: nv: Hold kvm->mmu_lock while initialising vcpu->arch.vncr_tlb
  KVM: arm64: nv: Avoid dereferencing NULL VNCR pseudo-TLB
  KVM: arm64: Fix block mapping validity check in stage-1 walker
  KVM: arm64: nv: Restart stage-1 walk if stage-2 desc update fails
  KVM: arm64: Restart instruction upon race in __kvm_at_s12()
  KVM: arm64: nv: Inject SEA TTW when desc update can't write to GPA
  KVM: arm64: nv: Fully update VNCR fixmap state in kvm_translate_vncr()
  KVM: arm64: Don't leak PFN when kvm_translate_vncr() races MMU notifier
  arm64: cpufeature: Expose ID_AA64ISAR2_EL1.ATS1A to KVM
  KVM: arm64: Wire AT S1E1A in the system instruction handling table
  KVM: arm64: Key CPTR_EL2.E0POE propagation on FEAT_S1POE

Signed-off-by: Marc Zyngier <maz@kernel.org>

diff --cc arch/arm64/kvm/at.c
Simple merge

diff --cc arch/arm64/kvm/hyp/include/hyp/switch.h
Simple merge

diff --cc arch/arm64/kvm/nested.c
Simple merge

diff --cc arch/arm64/kvm/sys_regs.c
Simple merge