Sherlock's blog

本文分析Linux内核里PCIe热插拔的代码架构

本文简单记录cpio.gz格式的压缩和解压缩命令

In server system, we often use ACPI table in UEFI to stort parametres of system. For a PCIe subsystem, IORT table will be used to store configurations of ITS, SMMU and RC. This document analyzes how to parse ITS configuration in kernel.

This document shares a code analysis based on Linux-v4.9 about how to parse SMMU information in ACPI IORT table, and how does a PCIe device get its SMMUv3 device.

Linux PCI code parses MEM/IO range, which are described in _CRS method in ACPI DSDT table. This document tries to share an analysis about this part of code.

There are a lot things should be done in software to support PCIe SR-IOV. Using qemu(for example) to use a VF, at least, we should: 1. host PCI subsystem finds VF and allocate resources for VF. 2. vfio driver exports VF's configure space, MEM/IO range to user space. 3. vfio driver allocate DMA for VF by IOMMU. 4. vfio driver builds the interrupt flow for VF. 5. qemu vfio driver simulates PCIe device for guest kernel. This document just tries to share an outline about point 1.

本文用来收集ssh使用的一些技巧

This doc helps to introduce how to test PCIe SR-IOV in HiSilicon D05 board. We can use same way to test SR-IOV in Hi1620.

本文是Linux sed命令的一个学习笔记

docker的三个最基本的概念是镜像(Image)，容器(Container)和仓库(Repository)。本文简单介绍有关他们的基础操作。