[开发环境]: 使用从源码编译的qemu启动内核失败(PVH模式识别成功) - acpi_init(): ACPI not provided by bootloader - mb_entry_info/HvmStartInfo rsdp_paddr = 0?

[Sunrisepeak]

问题描述

• 代码构建 + 生成镜像正常
• qemu PVH模式识别成功
• qemu运行报错: acpi_init(): ACPI not provided by bootloader
• ubuntu构建的qemu系统包 可以运行并地址非0

环境

• ubuntu24.04
• qemu-10 (从源码构建

一些尝试和分析

自己编译安装的qemu 必须要用 vnc链接吗

似乎qemu传进来的时候 rsdp_addr 就是被设置成了0

这里 bios/uefi 在 -kernel下并不能执行初始化acpi?

期望/疑问

• 自己编译安装的qemu 必须要用 vnc链接吗
• acpi/rsdp_addr是0的原因是什么
• qemu PVH模式下, 默认就是要qemu提供地址呢, 还是自己提供acpitable然后通过内核命令行参数指定地址

[fslongjin]

acpi那个，应该是因为你的电脑上面，没有acpi的库，然后qemu默认就没有添加acpi支持。这里应该是文档写的不全，可以试试加一下--enable-slirp --enable-acpi看看呢

[Sunrisepeak]

@fslongjin 安装了acpi工具链也有问题, 系统的qemu好像是下游加了很多非qemu官方和acpi相关的patch

• 1.目前 make qemu-nographic 以 pvh 方式启动 hvm info 结构里传进来的 rsdp确实是0
• 2.使用 make qemu 能识别acpi 并运行 (可能是bios固件中做了相关初始化?

---

make qemu 启动遇到的问题 (自己编译的 和 系统自带的 8.2 版本都是

默认使用 /bin/dragonreach 会报tty问题

[ DEBUG ] (src/driver/disk/ahci/mod.rs:93)	 <ahci_rust_init> Find a SATAPI type Disk.
[41m[ ERROR ] [0m(src/driver/disk/ahci/ahcidisk.rs:212)	 Read disk error
[41m[ ERROR ] [0m(src/init/initial_kthread.rs:44)	 ahci_init failed: EIO
[ INFO ] (src/filesystem/vfs/vcore.rs:122)	 Try to mount root fs...
[ DEBUG ] (src/driver/base/block/manager.rs:209)	 All gendisks: ["/dev/vda1"]
[ DEBUG ] (src/driver/block/cache/cached_block_device.rs:47)	 BlockCache Initialized!
[ INFO ] (src/filesystem/vfs/vcore.rs:67)	 VFS: Migrating filesystems...
[ INFO ] (src/filesystem/devpts/mod.rs:292)	 DevPtsFs mounted.
[ INFO ] (src/filesystem/vfs/vcore.rs:108)	 VFS: Migrate filesystems done!
[ INFO ] (src/filesystem/vfs/vcore.rs:153)	 Successfully migrate rootfs to FAT32!
[ DEBUG ] (src/net/net_core.rs:58)	 dhcp_query: net_face=eth0
[ DEBUG ] (src/net/net_core.rs:74)	 DHCP try round: 0
[ INFO ] (src/net/net_core.rs:102)	 Successfully allocated ip by Dhcpv4! Ip:10.0.2.15/24
[ DEBUG ] (src/init/initial_kthread.rs:58)	 initial kernel thread done.
[ INFO ] (src/init/initial_kthread.rs:92)	 Boot with specified init process: "/bin/dragonreach"
[ DEBUG ] (src/init/initial_kthread.rs:132)	 Trying to run init process at "/bin/dragonreach"
[1;33m[ WARN ] [0m(src/syscall/mod.rs:381)	 SYS_SIGALTSTACK has not yet been implemented
 ____                                      ___   ____ 

|  _ \  _ __   __ _   __ _   ___   _ __   / _ \ / ___| 

| | | || '__| / _` | / _` | / _ \ | '_ \ | | | |\___ \  

| |_| || |   | (_| || (_| || (_) || | | || |_| | ___) |

|____/ |_|    \__,_| \__, | \___/ |_| |_| \___/ |____/ 

                     |___/     

 DragonOS - An opensource operating system.

 Copyright: DragonOS Community. 2022-2024, All rights reserved.

 Version: [1;32mV0.1.10

[0m Git commit SHA1: 

 Build time: Sep  2 2025 22:58:22

 

You can visit the project via:



[1;36m    Official Website: https://DragonOS.org

[0m[1;33m    GitHub: https://github.com/DragonOS-Community/DragonOS

[0m

 Maintainer: longjin <[email protected]>

 Get contact with the community: <[email protected]>



 Join our development community:

[1;33m    https://bbs.dragonos.org.cn

[0m

[1;33m[ WARN ] [0m(src/syscall/mod.rs:381)	 SYS_SIGALTSTACK has not yet been implemented
[1;33m[ WARN ] [0m(src/syscall/mod.rs:381)	 SYS_SIGALTSTACK has not yet been implemented
[92mroot@DragonOS[0m:[96m/[0m$ [ DEBUG ] (src/driver/tty/tty_job_control.rs:83)	 tty_check_change: orphaned pgrp
read char failed: I/O error (os error 5)
[ DEBUG ] (src/driver/tty/tty_job_control.rs:83)	 tty_check_change: orphaned pgrp
read char failed: I/O error (os error 5)
[ DEBUG ] (src/driver/tty/tty_job_control.rs:83)	 tty_check_change: orphaned pgrp
read char failed: I/O error (os error 5)
[ DEBUG ] (src/driver/tty/tty_job_control.rs:83)	 tty_check_change: orphaned pgrp
read char failed: I/O error (os error 5)

---

• serial_opt.txt
• 如果手动修改 grub 的 引导配置 dragonreach -> busybox init 可以进入sh

---

问题汇总

• 1. nographic: -kernel + pvh 模式 rsdp 的值 会不会在执行内核代码前被设置, 受影响的因素是什么, 还是只是下游非qemu官方的patch设置的
• 2. make qemu 默认dragonreach的tty问题