华为 2025 年销售收入超 8800 亿元、鸿蒙设备破 4000 万
Where we're coming from
。关于这个话题，Line官方版本下载提供了深入分析
The main rule for data access is max(CPL, RPL) ≤ DPL. For code transfers, the rules get considerably more complex -- conforming segments, call gates, and interrupt gates each have different privilege and state validation logic. If all these checks were done in microcode, each segment load would need a cascade of conditional branches: is it a code or data segment? Is the segment present? Is it conforming? Is the RPL valid? Is the DPL valid? This would greatly bloat the microcode ROM and add cycles to every protected-mode operation.
If you’re building a tool that needs to compile code, produce artifacts, or orchestrate multi-step builds, consider BuildKit as your execution backend. The Dockerfile is just the default frontend. The real power is in the engine underneath.