修改QEMU

若系统环境为openEuler 22.03 LTS Arm系统，可跳过此章节。

操作步骤

  1. 安装必要的工具软件和库文件。

    • 若系统环境为openEuler 22.03 LTS x86/openEuler 20.03 LTS/Kylin V10 SP2/Kylin V10 Arm/BC Linux 21.10/UOS V20（1050e）/CULinux 3.0/CentOS 7.5（5.10.0）/Tlinux3.1/UOS V20（1050u2e）/Kylin V10 SP3/BC Linux 8.2操作系统，请执行2。
    • 若系统环境为Ubuntu 20.04/Ubuntu 22.04/veLinux 1.1操作系统，请执行3。
    • 若系统环境为Debian11.8/Debian10.13/veLinux 1.2操作系统，请执行4。

  2. 执行如下命令，安装必要的工具软件和库文件。

    yum install spice-server spice-server-devel -y

    显示如下，表示安装成功。

    Complete!

    对于Tlinux3.1：还需执行yum install -y python3 perl

    显示如下，表示安装成功。

    Complete!

  3. 执行如下命令，安装必要的工具软件和库文件。

    apt-get install -y ninja-build gcc pkg-config build-essential zlib1g-dev libglib2.0-dev libmount-dev libpixman-1-dev

    libpixman-1-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  binutils binutils-common binutils-x86-64-linux-gnu cpp cpp-9 dpkg-dev fakeroot g++ g++-9 gcc-10-base gcc-9 gcc-9-base libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libasan5
  libatomic1 libbinutils libblkid-dev libblkid1 libc-dev-bin libc6 libc6-dev libcc1-0 libcrypt-dev libctf-nobfd0 libctf0 libdpkg-perl libfakeroot libffi-dev libfile-fcntllock-perl libgcc-9-dev libgcc-s1
  libglib2.0-0 libglib2.0-bin libglib2.0-dev-bin libgomp1 libisl22 libitm1 liblsan0 libmount1 libmpc3 libpcre16-3 libpcre2-16-0 libpcre2-32-0 libpcre2-8-0 libpcre2-dev libpcre2-posix2 libpcre3
  libpcre3-dev libpcre32-3 libpcrecpp0v5 libquadmath0 libselinux1-dev libsepol1 libsepol1-dev libstdc++-9-dev libstdc++6 libtsan0 libubsan1 libuuid1 linux-libc-dev make manpages-dev uuid-dev zlib1g
Suggested packages:
  binutils-doc cpp-doc gcc-9-locales debian-keyring g++-multilib g++-9-multilib gcc-9-doc gcc-multilib autoconf automake libtool flex bison gdb gcc-doc gcc-9-multilib glibc-doc bzr libgirepository1.0-dev
  libglib2.0-doc libstdc++-9-doc make-doc
The following NEW packages will be installed:

    apt-get install -y libusbredirhost-dev libusbredirhost1 libusbredirparser-dev libusbredirparser1 usbredirserver

    libusbredirparser1 usbredirserver
Reading package lists... DoneBuilding dependency treeReading state information... Donelibusbredirhost1 is already the newest version (0.8.0-1ubuntu0.1).libusbredirhost1 set to manually installed.libusbredirparser1 is already the newest version (0.8.0-1ubuntu0.1).libusbredirparser1 set to manually installed.The following NEW packages will be installed:  libusbredirhost-dev libusbredirparser-dev usbredirserver0 upgraded, 3 newly installed, 0 to remove and 263 not upgraded.Need to get 30.5 kB of archives.After this operation, 121 kB of additional disk space will be used.Get:1 http://ports.ubuntu.com/ubuntu-ports focal-updates/main arm64 libusbredirparser-dev arm64 0.8.0-1ubuntu0.1 [8,164 B]Get:2 http://ports.ubuntu.com/ubuntu-ports focal-updates/main arm64 libusbredirhost-dev arm64 0.8.0-1ubuntu0.1 [14.4 kB]Get:3 http://ports.ubuntu.com/ubuntu-ports focal-updates/universe arm64 usbredirserver arm64 0.8.0-1ubuntu0.1 [7,896 B]

    apt-get install libspice-server-dev libspice-server1

    Reading package lists... DoneBuilding dependency treeReading state information... Donelibspice-server1 is already the newest version (0.14.2-4ubuntu3.1).libspice-server1 set to manually installed.The following NEW packages will be installed:  libspice-protocol-dev libspice-server-dev0 upgraded, 2 newly installed, 0 to remove and 263 not upgraded.Need to get 31.8 kB of archives.After this operation, 198 kB of additional disk space will be used.Get:1 http://ports.ubuntu.com/ubuntu-ports focal/main arm64 libspice-protocol-dev all 0.14.0-0ubuntu1 [21.5 kB]Get:2 http://ports.ubuntu.com/ubuntu-ports focal-updates/main arm64 libspice-server-dev arm64 0.14.2-4ubuntu3.1 [10.3 kB]Fetched 31.8 kB in 8s (3,903 B/s)Selecting previously unselected package libspice-protocol-dev.(Reading database ... 97326 files and directories currently installed.)Preparing to unpack .../libspice-protocol-dev_0.14.0-0ubuntu1_all.deb ...

  4. 执行如下命令，安装必要的工具软件和库文件。

    apt install -y make gcc pkg-config build-essential zlib1g-dev libglib2.0-dev libmount-dev libpixman-1-dev --allow-unauthenticated

    Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
pkg-config is already the newest version (0.29.2-1).
gcc is already the newest version (4:10.2.1-1).
make is already the newest version (4.3-4.1).
build-essential is already the newest version (12.9).
zlib1g-dev is already the newest version (1:1.2.11.dfsg-2+deb11u2).
libmount-dev is already the newest version (2.36.1-8+deb11u1).
libglib2.0-dev is already the newest version (2.66.8-1).
libpixman-1-dev is already the newest version (0.40.0-1.1~deb11u1).

    apt install -y libusbredirhost1 libusbredirparser1

    Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
libusbredirparser1 is already the newest version (0.8.0-1+b1).
libusbredirhost1 is already the newest version (0.8.0-1+b1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

    apt install libspice-server1

    Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
libspice-server1 is already the newest version (0.14.3-2.1).
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

  5. 执行如下命令，查看当前环境使用的QEMU版本。

    virsh version

    Compiled against library: libvirt 7.0.0
Using library: libvirt 7.0.0
Using API: QEMU 7.0.0
Running hypervisor: QEMU 4.1.0

  6. 单击QEMU网站下载4.1.0版本的QEMU源码包，并将下载的源码包上传至环境中。

    对于Atlas 200T A2 Box16 异构子框，建议下载5.2.0版本的QEMU源码包。

  7. 执行如下命令，修改目录权限。

    chmod +x ./qemu-4.1.0.tar.xz

  8. 执行如下命令，解压QEMU源码包。

    tar -xf ./qemu-4.1.0.tar.xz

  9. 执行如下命令，进入QEMU源码目录。

    cd qemu-4.1.0/

  10. 修改QEMU源码。

    1. 执行如下命令，修改“pci-quirks.c”文件。

      vi ./hw/vfio/pci-quirks.c

      增加如下加粗字体标注的代码并保存：

      …
#include "hw/nvram/fw_cfg.h"
#include "pci.h"
#include "trace.h"
 
// ascend-patch begin
#define PCI_VENDOR_ID_HUAWEI      0x19e5
#define PCI_DEVICE_ID_ASCEND910   0xd801
#define PCI_DEVICE_ID_ASCEND910B  0xd802
#define PCI_DEVICE_ID_ASCEND310P   0xd500
#define PCI_DEVICE_ID_ASCEND310B   0xd105
#define PCI_DEVICE_ID_ASCEND310   0xd100
#define PCI_SUB_DEVICE_ID_ASCEND310P_1P_MIN  0x100
#define PCI_SUB_DEVICE_ID_ASCEND310P_1P_MAX  0x10f
#define PCI_SUB_DEVICE_ID_ASCEND310P_2P_MIN  0x110
#define PCI_SUB_DEVICE_ID_ASCEND310P_2P_MAX  0x11f
#define ASCEND910_XLOADER_SIZE    4
#define ASCEND910_XLOADER_OFFSET  0x80400
#define ASCEND910B_XLOADER_SIZE   4
#define ASCEND910B_XLOADER_OFFSET    0x18208430
#define ASCEND310P_2P_BASE         (128 * 1024 * 1024)
#define ASCEND310P_1P_DEVNUM       1
#define ASCEND310P_2P_DEVNUM       2
#define ASCEND310P_XLOADER_SIZE    4
#define ASCEND310P_XLOADER_OFFSET  0x100430
#define ASCEND310B_XLOADER_SIZE    4
#define ASCEND310B_XLOADER_OFFSET  0x4430
#define ASCEND310_XLOADER_SIZE    4
#define ASCEND310_XLOADER_OFFSET  0x400
typedef struct VFIOAscendBarQuirk {
    struct VFIOPCIDevice *vdev;
    pcibus_t offset;
    uint8_t bar;
    MemoryRegion *mem;
} VFIOAscendBarQuirk;
static uint64_t vfio_ascend_quirk_read(void *opaque,
                                       hwaddr addr, unsigned size)
{
    VFIOAscendBarQuirk *quirk = opaque;
    VFIOPCIDevice *vdev = quirk->vdev;
    qemu_log("read RO region! addr=0x%" HWADDR_PRIx ", size=%d\n",
            addr + quirk->offset, size);
    return vfio_region_read(&vdev->bars[quirk->bar].region,
                            addr + quirk->offset, size);
}
static void vfio_ascend_quirk_write(void *opaque, hwaddr addr,
                                    uint64_t data, unsigned size)
{
    VFIOAscendBarQuirk *quirk = opaque;
    qemu_log("modifying RO region is not allowed! addr=0x%"
            HWADDR_PRIx ", data=0x%" PRIx64 ", size=%d\n",
            addr + quirk->offset, data, size);
}
static const MemoryRegionOps vfio_ascend_intercept_regs_quirk = {
    .read = vfio_ascend_quirk_read,
    .write = vfio_ascend_quirk_write,
    .endianness = DEVICE_LITTLE_ENDIAN,
};
static void vfio_probe_ascend910b_bar2_quirk(VFIOPCIDevice *vdev, int nr)
{
    VFIOQuirk *quirk;
    VFIOAscendBarQuirk *bar2_quirk;
 
    if (vdev->vendor_id != PCI_VENDOR_ID_HUAWEI || nr != 2
        || vdev->device_id != PCI_DEVICE_ID_ASCEND910B) {
        return;
    }
 
    quirk = g_malloc0(sizeof(*quirk));
    quirk->nr_mem = 1;
    quirk->mem = g_new0(MemoryRegion, quirk->nr_mem);
    bar2_quirk = quirk->data = g_new0(typeof(*bar2_quirk), quirk->nr_mem);
    bar2_quirk[0].vdev = vdev;
    bar2_quirk[0].offset = ASCEND910B_XLOADER_OFFSET;
    bar2_quirk[0].bar = nr;
 
    /* intercept w/r to the xloader-updating register,
     * so the vm can't enable xloader-updating
     */
    memory_region_init_io(&quirk->mem[0], OBJECT(vdev),
                          &vfio_ascend_intercept_regs_quirk,
                          &bar2_quirk[0],
                          "vfio-ascend910b-bar2-intercept-regs-quirk",
                          ASCEND910B_XLOADER_SIZE);
    memory_region_add_subregion_overlap(vdev->bars[nr].region.mem,
                                        bar2_quirk[0].offset,
                                        &quirk->mem[0], 1);
    QLIST_INSERT_HEAD(&vdev->bars[nr].quirks, quirk, next);
}
static void vfio_probe_ascend910_bar0_quirk(VFIOPCIDevice *vdev, int nr)
{
    VFIOQuirk *quirk;
    VFIOAscendBarQuirk *bar0_quirk;
    if (vdev->vendor_id != PCI_VENDOR_ID_HUAWEI || nr != 0 ||
        vdev->device_id != PCI_DEVICE_ID_ASCEND910) {
        return;
    }
    quirk = g_malloc0(sizeof(*quirk));
    quirk->nr_mem = 1;
    quirk->mem = g_new0(MemoryRegion, quirk->nr_mem);
    bar0_quirk = quirk->data = g_new0(typeof(*bar0_quirk), quirk->nr_mem);
    bar0_quirk[0].vdev = vdev;
    bar0_quirk[0].offset = ASCEND910_XLOADER_OFFSET;
    bar0_quirk[0].bar = nr;
    /*
     * intercept w/r to the xloader-updating register,
     * so the vm can't enable xloader-updating
     */
    memory_region_init_io(&quirk->mem[0], OBJECT(vdev),
                          &vfio_ascend_intercept_regs_quirk,
                          &bar0_quirk[0],
                          "vfio-ascend910-bar0-intercept-regs-quirk",
                          ASCEND910_XLOADER_SIZE);
    memory_region_add_subregion_overlap(vdev->bars[nr].region.mem,
                                        bar0_quirk[0].offset,
                                        &quirk->mem[0], 1);
    QLIST_INSERT_HEAD(&vdev->bars[nr].quirks, quirk, next);
}
static void vfio_probe_ascend310p_bar2_quirk(VFIOPCIDevice *vdev, int nr)
{
    VFIOQuirk *quirk;
    VFIOAscendBarQuirk *bar2_quirk;
    int sub_device_id;
    int devnum = 0;
    if (vdev->vendor_id != PCI_VENDOR_ID_HUAWEI || nr != 2 ||
        vdev->device_id != PCI_DEVICE_ID_ASCEND310P) {
        return;
    }
    sub_device_id = pci_get_word(vdev->pdev.config + PCI_SUBSYSTEM_ID);
    if (sub_device_id >= PCI_SUB_DEVICE_ID_ASCEND310P_1P_MIN &&
        sub_device_id <= PCI_SUB_DEVICE_ID_ASCEND310P_1P_MAX) {
        devnum = ASCEND310P_1P_DEVNUM;
    } else if (sub_device_id >= PCI_SUB_DEVICE_ID_ASCEND310P_2P_MIN &&
               sub_device_id <= PCI_SUB_DEVICE_ID_ASCEND310P_2P_MAX) {
        devnum = ASCEND310P_2P_DEVNUM;
    }
    if (devnum != ASCEND310P_1P_DEVNUM && devnum != ASCEND310P_2P_DEVNUM) {
        return;
    }
    quirk = g_malloc0(sizeof(*quirk));
    quirk->nr_mem = devnum;
    quirk->mem = g_new0(MemoryRegion, quirk->nr_mem);
    bar2_quirk = quirk->data = g_new0(typeof(*bar2_quirk), quirk->nr_mem);
    bar2_quirk[0].vdev = vdev;
    bar2_quirk[0].offset = ASCEND310P_XLOADER_OFFSET;
    bar2_quirk[0].bar = nr;
    /*
     * intercept w/r to the xloader-updating register,
     * so the vm can't enable xloader-updating
     */
    memory_region_init_io(&quirk->mem[0], OBJECT(vdev),
                          &vfio_ascend_intercept_regs_quirk,
                          &bar2_quirk[0],
                          "vfio-ascend310p-bar2-1p-intercept-regs-quirk",
                          ASCEND310P_XLOADER_SIZE);
    memory_region_add_subregion_overlap(vdev->bars[nr].region.mem,
                                        bar2_quirk[0].offset,
                                        &quirk->mem[0], 1);
    if (devnum == ASCEND310P_2P_DEVNUM) {
        bar2_quirk[1].vdev = vdev;
        bar2_quirk[1].offset = (ASCEND310P_2P_BASE + ASCEND310P_XLOADER_OFFSET);
        bar2_quirk[1].bar = nr;
        memory_region_init_io(&quirk->mem[1], OBJECT(vdev),
                              &vfio_ascend_intercept_regs_quirk,
                              &bar2_quirk[1],
                              "vfio-ascend310p-bar2-2p-intercept-regs-quirk",
                              ASCEND310P_XLOADER_SIZE);
        memory_region_add_subregion_overlap(vdev->bars[nr].region.mem,
                                            bar2_quirk[1].offset,
                                            &quirk->mem[1], 1);
    }
    QLIST_INSERT_HEAD(&vdev->bars[nr].quirks, quirk, next);
}
static void vfio_probe_ascend310b_bar2_quirk(VFIOPCIDevice *vdev, int nr)
{
    VFIOQuirk *quirk;
    VFIOAscendBarQuirk *bar2_quirk;
 
    if (vdev->vendor_id != PCI_VENDOR_ID_HUAWEI || nr != 2
        || vdev->device_id != PCI_DEVICE_ID_ASCEND310B) {
        return;
    }
 
    quirk = g_malloc0(sizeof(*quirk));
    quirk->nr_mem = 1;
    quirk->mem = g_new0(MemoryRegion, quirk->nr_mem);
    bar2_quirk = quirk->data = g_new0(typeof(*bar2_quirk), quirk->nr_mem);
    bar2_quirk[0].vdev = vdev;
    bar2_quirk[0].offset = ASCEND310B_XLOADER_OFFSET;
    bar2_quirk[0].bar = nr;
 
    /* intercept w/r to the xloader-updating register,
     * so the vm can't enable xloader-updating
     */
    memory_region_init_io(&quirk->mem[0], OBJECT(vdev),
                          &vfio_ascend_intercept_regs_quirk,
                          &bar2_quirk[0],
                          "vfio-ascend310b-bar2-intercept-regs-quirk",
                          ASCEND310B_XLOADER_SIZE);
    memory_region_add_subregion_overlap(vdev->bars[nr].region.mem,
                                        bar2_quirk[0].offset,
                                        &quirk->mem[0], 1);
    QLIST_INSERT_HEAD(&vdev->bars[nr].quirks, quirk, next);
}
static void vfio_probe_ascend310_bar4_quirk(VFIOPCIDevice *vdev, int nr)
{
    VFIOQuirk *quirk;
    VFIOAscendBarQuirk *bar4_quirk;
    if (vdev->vendor_id != PCI_VENDOR_ID_HUAWEI || nr != 4 ||
        vdev->device_id != PCI_DEVICE_ID_ASCEND310) {
        return;
    }
    quirk = g_malloc0(sizeof(*quirk));
    quirk->nr_mem = 1;
    quirk->mem = g_new0(MemoryRegion, quirk->nr_mem);
    bar4_quirk = quirk->data = g_new0(typeof(*bar4_quirk), quirk->nr_mem);
    bar4_quirk[0].vdev = vdev;
    bar4_quirk[0].offset = ASCEND310_XLOADER_OFFSET;
    bar4_quirk[0].bar = nr;
    /*
     * intercept w/r to the xloader-updating register,
     * so the vm can't enable xloader-updating
     */
    memory_region_init_io(&quirk->mem[0], OBJECT(vdev),
                          &vfio_ascend_intercept_regs_quirk,
                          &bar4_quirk[0],
                          "vfio-ascend310-bar4-intercept-regs-quirk",
                          ASCEND310_XLOADER_SIZE);
    memory_region_add_subregion_overlap(vdev->bars[nr].region.mem,
                                        bar4_quirk[0].offset,
                                        &quirk->mem[0], 1);
    QLIST_INSERT_HEAD(&vdev->bars[nr].quirks, quirk, next);
}
// ascend-patch end

 
…
    2. 修改vfio_bar_quirk_setup函数，增加如下加粗字体标注的代码并保存：
      void vfio_bar_quirk_setup(VFIOPCIDevice *vdev, int nr)
{
    vfio_probe_ati_bar4_quirk(vdev, nr);
    vfio_probe_ati_bar2_quirk(vdev, nr);
    vfio_probe_nvidia_bar5_quirk(vdev, nr);
    vfio_probe_nvidia_bar0_quirk(vdev, nr);
 
    // ascend-patch begin
    vfio_probe_ascend910b_bar2_quirk(vdev, nr);
    vfio_probe_ascend910_bar0_quirk(vdev, nr);
    vfio_probe_ascend310p_bar2_quirk(vdev, nr);
    vfio_probe_ascend310b_bar2_quirk(vdev, nr);
    vfio_probe_ascend310_bar4_quirk(vdev, nr);
    // ascend-patch end
 
    vfio_probe_rtl8168_bar2_quirk(vdev, nr);
    vfio_probe_igd_bar4_quirk(vdev, nr);
}…
    3. 执行如下命令，修改配置文件“./linux-user/syscall.c”的TARGET_NR_stime函数。

      对于Atlas 800 训练服务器（型号：9000）/Atlas 800 训练服务器（型号：9010），请跳过此步骤。

      vi ./linux-user/syscall.c

      修改前TARGET_NR_stime函数代码如下：

      #ifdef TARGET_NR_stime /* not on alpha */
       case TARGET_NR_stime:
             {
                  time_t host_time;
                  if (get_user_sal(host_time, argl))
                       return -TARGET_EFAULT;
                  return get_errno(stime(&host_time));
             }
#endif
      修改后TARGET_NR_stime函数的代码段如下加粗字体标注。 
      #ifdef TARGET_NR_stime /* not on alpha */
       case TARGET_NR_stime:
             {
                  time_t host_time;
                  if (get_user_sal(host_time, argl))
                       return -TARGET_EFAULT;
                struct timespec res;
                res.tv_sec = host_time;
                return get_errno(clock_settime(CLOCK_REALTIME, &res));
             }
#endif
    4. 对于Atlas 200T A2 Box16 异构子框，执行如下命令修改配置文件“target/i386/cpu.c”的x86_cpu_realizefn函数。

      vi ./target/i386/cpu.c

      修改前x86_cpu_realizefn函数代码如下：

      static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
{
    …
    if (env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) {
        if (accel_uses_host_cpuid()) {
            uint32_t host_phys_bits = x86_host_phys_bits();
            static bool warned;
 
            …
        } else {
           …
}
…
}

      修改后x86_cpu_realizefn函数段如下加粗字体标注。

      static void x86_cpu_realizefn(DeviceState *dev, Error **errp)
{
    …
    if (env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) {
        if (accel_uses_host_cpuid()) {
            uint32_t host_phys_bits = x86_host_phys_bits();
            static bool warned;
          cpu->host_phys_bits = true;
            …
        } else {
           …
}
…
}
    5. 对于Atlas 200T A2 Box16 异构子框+CentOS 7.5（5.10.0），执行如下命令修改“linux-user/strace.c”文件。

      vi ./linux-user/strace.c

      增加如下加粗字体内容并保存。

      #include "qemu/osdep.h"
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/select.h>
#include <sys/mount.h>
#include <arpa/inet.h>
#include <netinet/tcp.h>
#include <linux/if_packet.h>
#include <linux/netlink.h>
#include <linux/falloc.h>
#include <sched.h>
#include "qemu.h"
    6. 执行如下命令，修改“configure”文件。

      Debian11.8/Debian10.13/veLinux 1.2操作系统可跳过此步骤。

      vi ./configure

      修改如下加粗字体的参数取值为“yes”并保存。

      qom_cast_debug="yes"
trace_backends="log"
trace_file="trace"
spice="yes"
rbd=""
smartcard=""
libusb=""
usb_redir=""
opengl=""
opengl_dmabuf="no"
cpuid_h="no"
avx2_opt=""

  11. 构建并安装QEMU。

    • 对于Atlas 200T A2 Box16 异构子框+CentOS 7.5（5.10.0），需要执行11.a.i~11.a.iii。
    • 对于Atlas 200T A2 Box16 异构子框+Tlinux3.1，需要执行11.a.ii。
    • 其他OS请跳过步骤1。
    1. 安装依赖文件。
      1. 执行如下命令，配置网络源。

        yum install -y http://mirrors.aliyun.com/epel/epel-release-latest-7.noarch.rpm

        显示如下，表示安装成功。

        Complete!
      2. 执行如下命令，安装依赖。

        yum install -y ninja-build libffi-devel unzip

        显示如下，表示安装成功。

        Complete!
      3. 升级python3（以上以3.75为例）。
        1. 用户自行准备Python-3.7.5源码包并上传至服务器任意目录（例如/opt），执行如下命令解压。

          unzip Python-3.7.5.zip

        2. 进入解压后的文件夹，执行如下命令。

          配置命令：cd Python-3.7.5

          编译命令：./configure --prefix=/usr/local/python3.7.5 --enable-loadable-sqlite-extensions --enable-shared

          安装命令：make -j && make install

        3. 安装完成之后，执行如下命令查看安装版本，如果返回相关版本信息，则说明安装成功。

          python3 --version

    2. 执行如下命令，配置QEMU的构建环境和构建参数。

      ./configure --enable-kvm

    3. 执行如下命令，启动构建。

      make -j 64

    4. 执行如下命令，安装QEMU。

      make install

  12. 检查QEMU版本。

    1. 执行如下命令，重启libvirtd服务。

      service libvirtd restart

      Redirecting to /bin/systemctl restart libvirtd.service
    2. 执行如下命令，关闭AppArmor。

      systemctl disable apparmor

      若系统环境为openEuler 22.03 LTS/openEuler 20.03 LTS/Kylin V10 SP2/Kylin V10/UOS V20（1050e）/CULinux 3.0/Tlinux3.1/UOS V20（1050u2e）/Kylin V10 SP3/Debian11.8/BC Linux 8.2/Debian10.13/veLinux 1.2系统，可跳过此步骤。

    3. 执行如下命令，重启系统。

      reboot

      若系统环境为openEuler 22.03 LTS/openEuler 20.03 LTS/Kylin V10 SP2/Kylin V10/UOS V20（1050e）/CULinux 3.0/Tlinux3.1/UOS V20（1050u2e）/Kylin V10 SP3/BC Linux 8.2系统，可跳过此步骤。

    4. 执行如下命令，查看QEMU版本。

      virsh version

      Compiled against library: libvirt 6.0.0
Using library: libvirt 6.0.0
Using API: QEMU 6.0.0
Running hypervisor: QEMU 4.1.0

父主题： 安装前准备