virtio-net pci config space

最新推荐文章于 2024-11-11 07:35:29 发布

cl55

最新推荐文章于 2024-11-11 07:35:29 发布

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分类专栏： linux kernel virtio KVM qemu

本文链接：https://blog.youkuaiyun.com/cl55/article/details/51979241

本文详细介绍了virtio 1.0设备的PCI配置空间，以实际运行虚拟机中的virtio net设备配置空间十六进制转储为例，逐个字段解释其含义。

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Introduction
This article will focus on the details of virtio 1.0 device PCI config space. It will be centered around a sample virtio net PCI config taken from a real running virtual machine and explain every single field.

Sample PCI Config Space For Virtio Net Device
The following is the hexadecimal dump of the configuration space of a virtio net device:
00:04.0 Ethernet controller: Red Hat, Inc Device 1041 (rev 01)
00: f4 1a 41 10 07 05 10 00 01 00 00 02 00 00 00 00
10: 00 00 00 00 00 20 bd fe 00 00 00 00 00 00 00 00
20: 0c 00 00 fe 00 00 00 00 00 00 00 00 f4 1a 00 11
30: 00 00 b8 fe 98 00 00 00 00 00 00 00 0b 01 00 00
40: 09 00 10 01 04 00 00 00 00 00 00 00 00 10 00 00
50: 09 40 10 03 04 00 00 00 00 10 00 00 00 10 00 00
60: 09 50 10 04 04 00 00 00 00 20 00 00 00 10 00 00
70: 09 60 14 02 04 00 00 00 00 30 00 00 00 00 40 00
80: 00 10 00 00 09 70 14 05 00 00 00 00 00 00 00 00
90: 00 00 00 00 00 00 00 00 1