https://blog.qife122.com/tags/pcie/ Recent content in PCIe on 办公AI智能小助手 Hugo zh-cn qife Wed, 31 Dec 2025 22:26:51 +0800 https://blog.qife122.com/p/%E6%97%A0%E9%9C%80%E5%A4%A7pc%E6%A0%91%E8%8E%93%E6%B4%BE%E9%A9%B1%E5%8A%A8%E9%AB%98%E6%80%A7%E8%83%BDgpu%E7%9A%84%E5%AE%9E%E6%88%98%E8%AF%84%E6%B5%8B/ Wed, 31 Dec 2025 22:26:51 +0800 https://blog.qife122.com/p/%E6%97%A0%E9%9C%80%E5%A4%A7pc%E6%A0%91%E8%8E%93%E6%B4%BE%E9%A9%B1%E5%8A%A8%E9%AB%98%E6%80%A7%E8%83%BDgpu%E7%9A%84%E5%AE%9E%E6%88%98%E8%AF%84%E6%B5%8B/ <h2 id="big-gpus-dont-need-big-pcs">Big GPUs don&rsquo;t need big PCs</h2> <p>自从我让AMD、Intel和Nvidia显卡在树莓派上运行以来，就一直萦绕着一个问题：这有什么意义？树莓派只有1条PCIe Gen 3通道带宽可用于连接eGPU。这并不多。尤其是考虑到现代台式机至少有一个支持16条PCIe Gen 5通道的插槽。那是8 GT/s对512 GT/s。并非公平竞争。</p> https://blog.qife122.com/p/pcie-6.0-%E5%AE%89%E5%85%A8%E5%8D%8F%E8%AE%AE%E9%87%8D%E5%A4%A7%E7%BC%BA%E9%99%B7ide%E8%A7%84%E8%8C%83%E4%B8%AD%E7%9A%84%E5%A4%9A%E4%B8%AA%E6%BC%8F%E6%B4%9E%E5%88%86%E6%9E%90/ Wed, 31 Dec 2025 04:49:17 +0800 https://blog.qife122.com/p/pcie-6.0-%E5%AE%89%E5%85%A8%E5%8D%8F%E8%AE%AE%E9%87%8D%E5%A4%A7%E7%BC%BA%E9%99%B7ide%E8%A7%84%E8%8C%83%E4%B8%AD%E7%9A%84%E5%A4%9A%E4%B8%AA%E6%BC%8F%E6%B4%9E%E5%88%86%E6%9E%90/ <h1 id="vu404544---pcie-完整性及数据加密ide协议规范中发现的漏洞">VU#404544 - PCIe 完整性及数据加密（IDE）协议规范中发现的漏洞</h1> <p><strong>漏洞说明 VU#404544</strong> <strong>最初发布日期：</strong> 2025-12-09 | <strong>最后修订日期：</strong> 2025-12-09</p> <h2 id="概述">概述</h2> <p>PCI Express 完整性及数据加密（PCIe IDE）在 PCIe 6.0 标准中引入，为跨 PCIe 连接传输的数据提供链路级加密和完整性保护。在 IDE 规范中发现的几个问题，可能允许具有本地访问权限的攻击者影响链路上消耗的数据。PCIe 6.0 IDE 勘误表提供了纠正指导，预计固件和硬件更新将解决这些问题。</p> https://blog.qife122.com/p/%E6%A0%91%E8%8E%93%E6%B4%BE%E4%B8%8A%E7%9A%84resizable-bar%E6%94%AF%E6%8C%81%E5%AE%9E%E7%8E%B0%E8%AF%A6%E8%A7%A3/ Wed, 05 Nov 2025 05:24:56 +0800 https://blog.qife122.com/p/%E6%A0%91%E8%8E%93%E6%B4%BE%E4%B8%8A%E7%9A%84resizable-bar%E6%94%AF%E6%8C%81%E5%AE%9E%E7%8E%B0%E8%AF%A6%E8%A7%A3/ <h1 id="resizeable-bar支持在树莓派上的实现">Resizeable BAR支持在树莓派上的实现</h1> <p>虽然并非Linux现代显卡支持的绝对必要条件，但Resizable BAR支持通过允许GPU在PCIe总线上以大于256MB的数据块传输数据，从而提升GPU性能。</p> https://blog.qife122.com/p/nvme%E8%AE%BE%E5%A4%87%E7%94%B5%E6%BA%90%E7%8A%B6%E6%80%81%E5%88%87%E6%8D%A2%E6%95%85%E9%9A%9C%E7%9A%84%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88/ Tue, 04 Nov 2025 14:44:00 +0800 https://blog.qife122.com/p/nvme%E8%AE%BE%E5%A4%87%E7%94%B5%E6%BA%90%E7%8A%B6%E6%80%81%E5%88%87%E6%8D%A2%E6%95%85%E9%9A%9C%E7%9A%84%E8%A7%A3%E5%86%B3%E6%96%B9%E6%A1%88/ <h1 id="nvme无法从d3cold状态切换到d0状态设备无法访问">NVMe：无法从D3cold状态切换到D0状态，设备无法访问</h1> <h2 id="问题描述">问题描述</h2> <p>突然，在无明显触发因素的情况下，我的NVMe驱动器出现故障，<code>/dev/nvme0n1p1</code> 设备消失：</p> <div class="highlight"><div class="chroma"> <table class="lntable"><tr><td class="lntd"> <pre tabindex="0" class="chroma"><code><span class="lnt">1 </span><span class="lnt">2 </span><span class="lnt">3 </span><span class="lnt">4 </span><span class="lnt">5 </span></code></pre></td> <td class="lntd"> <pre tabindex="0" class="chroma"><code class="language-fallback" data-lang="fallback"><span class="line"><span class="cl">[136975.461964] nvme nvme0: controller is down; will reset: CSTS=0xffffffff, PCI_STATUS=0xffff </span></span><span class="line"><span class="cl">[136975.461978] nvme nvme0: Does your device have a faulty power saving mode enabled? </span></span><span class="line"><span class="cl">[136975.461983] nvme nvme0: Try &#34;nvme_core.default_ps_max_latency_us=0 pcie_aspm=off pcie_port_pm=off&#34; and report a bug </span></span><span class="line"><span class="cl">[136975.533762] nvme 0000:03:00.0: Unable to change power state from D3cold to D0, device inaccessible </span></span><span class="line"><span class="cl">[136975.534208] nvme nvme0: Disabling device after reset failure: -19write </span></span></code></pre></td></tr></table> </div> </div><p>随后出现了大量底层设备的缓冲区I/O错误。我尝试卸载并重新加载nvme和nvme-core模块，但问题仍未解决：</p> https://blog.qife122.com/p/oculink-egpu%E6%89%A9%E5%B1%95%E5%9D%9E%E5%85%BC%E5%AE%B9%E6%80%A7%E6%B7%B1%E5%BA%A6%E8%A7%A3%E6%9E%90%E7%BA%BF%E7%BC%86%E4%B8%8E%E9%80%82%E9%85%8D%E5%99%A8%E7%9A%84%E5%85%B3%E9%94%AE%E5%BD%B1%E5%93%8D/ Sun, 02 Nov 2025 00:55:59 +0800 https://blog.qife122.com/p/oculink-egpu%E6%89%A9%E5%B1%95%E5%9D%9E%E5%85%BC%E5%AE%B9%E6%80%A7%E6%B7%B1%E5%BA%A6%E8%A7%A3%E6%9E%90%E7%BA%BF%E7%BC%86%E4%B8%8E%E9%80%82%E9%85%8D%E5%99%A8%E7%9A%84%E5%85%B3%E9%94%AE%E5%BD%B1%E5%93%8D/ <h1 id="并非所有oculink-egpu扩展坞都相同">并非所有OCuLink eGPU扩展坞都相同</h1> <p>我最近尝试将Minisforum DEG1 GPU扩展坞与树莓派500+配合使用，使用了M.2转OCuLink适配器和这条晨扬SFF-8611线缆。</p>