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6.2.11 Downstream Port Containment (DPC)
原文第1句（Page 36）
Downstream Port Containment (DPC) is an optional normative feature of a Downstream Port. DPC halts PCI Express traffic below a Downstream Port after an unmasked uncorrectable error is detected at or below the Port, avoiding the potential spread of any data corruption, and supporting Containment Error Recovery (CER) if implemented by software. A Downstream Port indicates support for DPC by implementing a DPC Extended Capability structure, which contains all DPC control and status bits. See § Section 7.9.14.
翻译
下游端口隔离（DPC）是下游端口的一个可选规范特性。DPC 在端口处或其下方检测到未屏蔽的不可纠正错误后，会停止该下游端口下方的 PCIe 流量，避免任何数据损坏的潜在扩散，并支持软件实现的隔离错误恢复（CER）。下游端口通过实现DPC扩展能力结构
