XDV Specification Corpus

Cross-Domain Virtualizer (K / Q / Φ Native Operating System)

Organization: Dust LLC
Project: XDV — Cross-Domain Virtualizer
Corpus Version: 0.1-draft
Status: Foundational Specification Development

---

Overview

The XDV Specification Corpus defines the complete architectural, mathematical, operational, and security foundations of XDV — a K/Q/Φ-native operating system designed to virtualize and coordinate multiple computational substrates within a unified deterministic control plane.

XDV is not an extension of legacy operating systems.

It is a formal redefinition of the operating system for hybrid compute systems.

---

Core Definition

XDV — Cross-Domain Virtualizer
A K-domain (classical), Q-domain (quantum), and Φ-domain (phase-native) operating system that virtualizes and coordinates multiple computational substrates into a unified deterministic execution environment.

---

Design Doctrine

XDV is built upon five non-negotiable principles:

1. Domain Equivalence
   K, Q, and Φ are first-class computational domains.

2. Deterministic Orchestration
   The global control plane remains deterministic, even when managing probabilistic or coherence-sensitive substrates.

3. Virtualization over Emulation
   XDV virtualizes computational domains instead of emulating foreign paradigms.

4. Zero-Trust Domain Boundaries
   All cross-domain interaction is capability-scoped and policy-verified.

5. Φ-Native Compatibility
   The architecture explicitly supports coherent phase-structured computation.

---

Domain Model (K / Q / Φ)

XDV formalizes three computational domains:

K-Domain

Deterministic classical execution.

• Threaded computation
• Persistent memory
• System control plane
• Stable state authority

Q-Domain

Probabilistic quantum computation.

• Logical qubit abstraction
• Measurement-bound result extraction
• Decoherence constraints
• Error correction models

Φ-Domain

Coherent phase-native computation.

• Structured phase evolution
• Interference-based transformation
• Coherence-window constraints
• Deterministic or structured semantics (architecture dependent)

Each domain is abstracted as a schedulable substrate.

---

Corpus Structure

The XDV Specification Corpus is divided into the following volumes:

---

VOLUME I — Foundational Architecture

XDV-001 — Architectural Principles
XDV-002 — Formal Domain Model (K/Q/Φ)
XDV-003 — System State Formalization
XDV-004 — Execution Semantics
XDV-005 — Deterministic Orchestration Model

---

VOLUME II — Kernel Core Specifications

XDV-010 — Kernel Architecture
XDV-011 — Domain Abstraction Layer
XDV-012 — Cross-Domain Scheduler
XDV-013 — Unified Memory Fabric
XDV-014 — Domain Hypervisor
XDV-015 — Secure Domain Boundary Manager

---

VOLUME III — Hybrid Execution Layer

XDV-020 — Hybrid Process Model
XDV-021 — Cross-Domain IPC
XDV-022 — Domain Transition Protocol
XDV-023 — Domain Resource Contracts
XDV-024 — Hybrid Fault Model

---

VOLUME IV — Security & Integrity

XDV-030 — Cross-Domain Security Model
XDV-031 — Cryptographic Architecture
XDV-032 — Q-State Non-Cloning Enforcement
XDV-033 — Φ-State Integrity Constraints
XDV-034 — Deterministic Audit & Attestation

---

VOLUME V — Networking & Distributed Systems

XDV-040 — Cross-Domain Network Stack
XDV-041 — Distributed Hybrid Scheduling
XDV-042 — Φ-Native Distributed Consensus
XDV-043 — Cross-Domain Cloud Runtime

---

VOLUME VI — Dust Programming Language Integration

XDV-050 — DPL Kernel Subset
XDV-051 — Domain Type System Extensions
XDV-052 — Hybrid Runtime ABI
XDV-053 — Formal Verification Targets

---

VOLUME VII — Hardware Integration

XDV-060 — Q-Hardware Provider Interface
XDV-061 — Φ-Hardware Provider Interface
XDV-062 — Hybrid Boot Architecture

---

VOLUME VIII — Observability & Diagnostics

XDV-070 — Cross-Domain Telemetry Model
XDV-071 — Deterministic Replay Engine
XDV-072 — Coherence & Decoherence Diagnostics

---

VOLUME IX — Reference Implementation

XDV-080 — Kernel Reference Implementation (DPL)
XDV-081 — Hybrid Runtime Reference
XDV-082 — Cross-Domain Scheduler Reference
XDV-083 — Domain Hypervisor Reference
XDV-084 — Conformance Test Suite

---

Specification Numbering Scheme

Each specification document follows the pattern:

XDV-XXX — Title

Where:

• 000–009: Foundational axioms
• 010–019: Kernel core
• 020–029: Execution layer
• 030–039: Security
• 040–049: Networking
• 050–059: DPL integration
• 060–069: Hardware interfaces
• 070–079: Observability
• 080–099: Reference implementation

Future expansions may introduce additional volumes.

---

Normative Language

The following terms are used as defined in RFC-style standards:

• MUST
• MUST NOT
• REQUIRED
• SHALL
• SHALL NOT
• SHOULD
• SHOULD NOT
• MAY

All normative requirements will be explicitly marked.

---

Development Phases

Phase 1 — Architectural Formalization
Phase 2 — Kernel Prototype (DPL)
Phase 3 — Cross-Domain Runtime Integration
Phase 4 — Hardware Provider Integration
Phase 5 — Distributed Hybrid Deployment

---

Intended Audience

This corpus is intended for:

• Systems architects
• Kernel engineers
• Quantum runtime engineers
• Φ-domain researchers
• Formal methods engineers
• Hybrid infrastructure developers

---

Status

This corpus is in draft stage.

Interfaces, invariants, and domain semantics may evolve during formalization.

Backward compatibility is not guaranteed prior to 1.0 specification freeze.

---

Closing Statement

XDV does not extend classical operating systems.

It formalizes a multi-domain computational reality.

K, Q, and Φ are peers.

The operating system is the deterministic boundary between them.

XDV virtualizes computation itself.

Normative Freeze Artifacts

The current requirement freeze and indexing artifacts for XDV-001..084 are maintained in:

• NORMATIVE_FREEZE.md
• requirements/xdv_requirement_index.csv
• requirements/xdv_requirement_pass_fail.md

These artifacts define frozen status tags and pass/fail criteria baselines.