Merge branch kvm-arm64/pkvm-fixes-7.2 into kvmarm-master/next

* kvm-arm64/pkvm-fixes-7.2:
  : .
  : Assorted pKVM fixes for 7.2:
  :
  : - Ensure that the vcpu memcache is filled in a number of cases (donate,
  :   share, selftest)
  :
  : - Fix vmemmap page order handling by resetting it when initialising the
  :   memory pool
  :
  : - Don't leak page references on failed memory donation
  :
  : - Add sanity-check for refcounted pages when donating/sharing pages
  :
  : - Clear __hyp_running_vcpu on state flush
  :
  : - Check LR upper bound against a trusted value
  :
  : - Assorted fixes for the host-side tracking of the pages shared with
  :   EL2 as a result of some Sashiko testing from Fuad
  :
  : - Correctly forward HCR_EL2.VSE from host to guest, so that protected
  :   guests can see SErrors
  : .
  KVM: arm64: Roll back partial shares on kvm_share_hyp() failure
  KVM: arm64: Avoid host/hyp share desync on unshare hypercall failure
  KVM: arm64: Free hyp-share tracking node when share hypercall fails
  KVM: arm64: Flush HCR_EL2.VSE to deliver SErrors to pKVM guests
  KVM: arm64: Bound used_lrs when flushing the pKVM hyp vCPU
  KVM: arm64: Clear __hyp_running_vcpu when flushing the pKVM hyp vCPU
  KVM: arm64: Pre-check vcpu memcache for host->guest donate
  KVM: arm64: Pre-check vcpu memcache for host->guest share
  KVM: arm64: Seed pkvm_ownership_selftest vcpu memcache
  KVM: arm64: Add fail-safe for refcounted pages in __pkvm_hyp_donate_host
  KVM: arm64: Fix __pkvm_init_vm error path
  KVM: arm64: Reset page order in pKVM hyp_pool

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

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