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Merge branch kvm-arm64/pkvm_vm_handle into kvmarm-master/next

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* kvm-arm64/pkvm_vm_handle:
  : pKVM VM handle allocation fixes, courtesy of Fuad Tabba.
  :
  : From the cover letter (20250909072437.4110547-1-tabba@google.com):
  :
  : "In pKVM, this handle is allocated when the VM is initialized at the
  :  hypervisor, which is on the first vCPU run. However, the host starts
  :  initializing the VM and setting up its data structures earlier. MMU
  :  notifiers for the VMs are also registered before VM initialization at
  :  the hypervisor, and rely on the handle to identify the VM.
  :
  :  Therefore, there is a potential gap between when the VM is (partially)
  :  setup at the host, but still without a valid pKVM handle to identify it
  :  when communicating with the hypervisor."
  KVM: arm64: Reserve pKVM handle during pkvm_init_host_vm()
  KVM: arm64: Introduce separate hypercalls for pKVM VM reservation and initialization
  KVM: arm64: Consolidate pKVM hypervisor VM initialization logic
  KVM: arm64: Separate allocation and insertion of pKVM VM table entries
  KVM: arm64: Decouple hyp VM creation state from its handle
  KVM: arm64: Clarify comments to distinguish pKVM mode from protected VMs
  KVM: arm64: Rename 'host_kvm' to 'kvm' in pKVM host code
  KVM: arm64: Rename pkvm.enabled to pkvm.is_protected
  KVM: arm64: Add build-time check for duplicate DECLARE_REG use

Signed-off-by: Marc Zyngier <maz@kernel.org>
This commit is contained in:
Marc Zyngier 2025-09-15 10:49:04 +01:00
commit 3064cee8c3
9 changed files with 221 additions and 75 deletions
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