添加内核补丁

下载网址

内核源码rpm包（例如：kernel-3.10.0-957.el7.src.rpm）地址如下：

redhat官网：https://access.redhat.com/downloads/

centos网站：https://vault.centos.org/7.6.1810/os/Source/SPackages/

操作步骤

1. 安装并解压源码。
   1. 执行如下命令，安装源码包。

      rpm -ivh kernel-3.10.0-957.el7.src.rpm

   2. 执行如下命令，进入/root/rpmbuild/SOURCES目录。

      cd /root/rpmbuild/SOURCES/

   3. 执行如下命令，解压源码包。

      xz -d linux-3.10.0-957.el7.tar.xz

      tar xvf linux-3.10.0-957.el7.tar

2. 修改内核代码。
   1. 执行如下命令，进入/root/rpmbuild/SOURCES/linux-3.10.0-957.el7目录。

      cd /root/rpmbuild/SOURCES/linux-3.10.0-957.el7

   2. 使用vi命令修改“drivers/firmware/dmi_scan.c”和“include/linux/dmi.h”文件中的相关函数。修改内容如下，具体请参见https://lore.kernel.org/lkml/1448575344-19107-1-git-send-email-jordan_hargrave@dell.com/#Z30drivers:firmware:dmi_scan.c。
      

      以下代码行前“+”表示新增该行内容，代码行前“-”表示删除该行内容。

      图1 “drivers/firmware/dmi_scan.c”文件
      
      图2 “include/linux/dmi.h”文件
      
3. 重新压缩内核代码。
   1. 执行如下命令，进入linux-3.10.0-957.el7文件夹所在目录。

      cd /root/rpmbuild/SOURCES

   2. 执行如下命令，压缩源码文件。

      tar -cf linux-3.10.0-957.el7.tar linux-3.10.0-957.el7

      xz -z linux-3.10.0-957.el7.tar

   3. 删除源码文件夹。

      rm -rf linux-3.10.0-957.el7

4. 编译源码包。
   1. 执行如下命令，进入/root/rpmbuild/SPECS/目录。

      cd ../SPECS/

   2. 执行如下命令，重构源码包。

      rpmbuild -ba kernel.spec

      

      生成的rpm包在/root/rpmbuild/RPMS/x86_64目录。

5. 卸载OS上原有的内核rpm包，安装新编译好的内核rpm包。
   1. 执行如下命令，查询OS上的原有的内核rpm包。

      rpm -qa |grep kernel

      如下所示：

      

   2. 执行如下命令，卸载OS上原有的内核rpm包。

      rpm -e 文件名

      如下所示：

      

      

      保留abrt-addon-kerneloops-2.1.11-60.el7.centos.x86_64文件。

   3. 执行如下命令，安装4新编译的kernel、kernel-devel、kernel-headers、kernel-tools-libs、kernel-tools内核rpm包。

      rpm -Uvh kernel-3.10.0-957.el7.x86_64.rpm

      rpm -Uvh kernel-devel-3.10.0-957.el7.x86_64.rpm

      rpm -Uvh kernel-headers-3.10.0-957.el7.x86_64.rpm

      rpm -Uvh kernel-tools-libs-3.10.0-957.el7.x86_64.rpm

      rpm -Uvh kernel-tools-3.10.0-957.el7.x86_64.rpm

      如下所示：

      

故障处理

执行rpmbuild命令报编译错误，请添加如下依赖。

报错内容：

error: Failed build dependencies:
        xmlto is needed by kernel-3.10.0-957.el7.x86_64
        asciidoc is needed by kernel-3.10.0-957.el7.x86_64
        hmaccalc is needed by kernel-3.10.0-957.el7.x86_64
        pesign >= 0.109-4 is needed by kernel-3.10.0-957.el7.x86_64
        elfutils-devel is needed by kernel-3.10.0-957.el7.x86_64
        zlib-devel is needed by kernel-3.10.0-957.el7.x86_64
        binutils-devel is needed by kernel-3.10.0-957.el7.x86_64
        newt-devel is needed by kernel-3.10.0-957.el7.x86_64
        python-devel is needed by kernel-3.10.0-957.el7.x86_64
        perl(ExtUtils::Embed) is needed by kernel-3.10.0-957.el7.x86_64
        audit-libs-devel is needed by kernel-3.10.0-957.el7.x86_64
        numactl-devel is needed by kernel-3.10.0-957.el7.x86_64
        pciutils-devel is needed by kernel-3.10.0-957.el7.x86_64

添加如下依赖：

rpm -ivh zlib-devel-1.2.7-13.el7.x86_64.rpm 
rpm -ivh boost-regex-1.53.0-18.el7.x86_64.rpm
rpm -ivh source-highlight-3.1.6-6.el7.x86_64.rpm
rpm -ivh asciidoc-8.6.8-5.el7.noarch.rpm
rpm -ivh hmaccalc-0.9.13-4.el7.x86_64.rpm
rpm -ivh opensc-0.13.0-9.el7.x86_64.rpm
rpm -ivh pesign-0.109-6.el7.x86_64.rpm 
rpm -ivh elfutils-libelf-devel-0.158-3.el7.x86_64.rpm 
rpm -ivh elfutils-devel-0.158-3.el7.x86_64.rpm
rpm -ivh binutils-devel-2.23.52.0.1-16.el7.x86_64.rpm
rpm -ivh newt-0.52.15-4.el7.x86_64.rpm
rpm -ivh slang-devel-2.2.4-11.el7.x86_64.rpm 
rpm -ivh newt-devel-0.52.15-4.el7.x86_64.rpm 
rpm -ivh python-devel-2.7.5-16.el7.x86_64.rpm
rpm -ivh perl-ExtUtils-Embed-1.30-283.el7.noarch.rpm
rpm -ivh audit-libs-devel-2.3.3-4.el7.x86_64.rpm
rpm -ivh numactl-devel-2.0.9-2.el7.x86_64.rpm
rpm -ivh pciutils-3.2.1-4.el7.x86_64.rpm
rpm -ivh pciutils-devel-3.2.1-4.el7.x86_64.rpm
rpm -ivh xmlto-0.0.25-7.el7.x86_64.rpm –nodeps