Merge branch kvm-arm64/debugfs-fixes into kvmarm-master/next

* kvm-arm64/debugfs-fixes:
  : .
  : Cleanup of the debugfs iterator, which are way more complicated
  : than they ought to be, courtesy of Fuad Tabba. From the cover letter:
  :
  : "This series refactors the debugfs implementations for `idregs` and
  :  `vgic-state` to use standard `seq_file` iterator patterns.
  :
  :  The existing implementations relied on storing iterator state within
  :  global VM structures (`kvm_arch` and `vgic_dist`). This approach
  :  prevented concurrent reads of the debugfs files (returning -EBUSY) and
  :  created improper dependencies between transient file operations and
  :  long-lived VM state."
  : .
  KVM: arm64: Use standard seq_file iterator for vgic-debug debugfs
  KVM: arm64: Reimplement vgic-debug XArray iteration
  KVM: arm64: Use standard seq_file iterator for idregs debugfs

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

arch/arm64/include/asm/kvm_host.h

@@ -373,9 +373,6 @@ struct kvm_arch {
 	/* Maximum number of counters for the guest */
 	u8 nr_pmu_counters;
 
-	/* Iterator for idreg debugfs */
-	u8	idreg_debugfs_iter;
-
 	/* Hypercall features firmware registers' descriptor */
 	struct kvm_smccc_features smccc_feat;
 	struct maple_tree smccc_filter;