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A subsequent change to KVM/arm64 will necessitate walking the device list outside of the kvm->lock. Prepare by converting to an rculist. This has zero effect on the VM destruction path, as it is expected every reader is backed by a reference on the kvm struct. On the other hand, ensure a given device is completely destroyed before dropping the kvm->lock in the release() path, as certain devices expect to be a singleton (e.g. the vfio-kvm device). Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Sean Christopherson <seanjc@google.com> Signed-off-by: Oliver Upton <oliver.upton@linux.dev> Reviewed-by: Sean Christopherson <seanjc@google.com> Link: https://lore.kernel.org/r/20240422200158.2606761-2-oliver.upton@linux.dev Signed-off-by: Marc Zyngier <maz@kernel.org> |
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