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[Qemu-devel] Re: qemu fail to parse command line with "-pcidevice 00:19.
From: |
Markus Armbruster |
Subject: |
[Qemu-devel] Re: qemu fail to parse command line with "-pcidevice 00:19.0" |
Date: |
Thu, 24 Jun 2010 08:08:03 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) |
Note to qemu-devel: this issue is qemu-kvm only.
"Hao, Xudong" <address@hidden> writes:
> When assign one PCI device, qemu fail to parse the command line:
> qemu-system_x86 -smp 2 -m 1024 -hda /path/to/img -pcidevice host=00:19.0
> Error:
> qemu-system-x86_64: Parameter 'id' expects an identifier
> Identifiers consist of letters, digits, '-', '.', '_', starting with a letter.
> pcidevice argument parse error; please check the help text for usage
> Could not add assigned device host=00:19.0
>
> https://bugs.launchpad.net/qemu/+bug/597932
>
> This issue caused by qemu-kvm commit b560a9ab9be06afcbb78b3791ab836dad208a239.
The bug is in add_assigned_device():
r = get_param_value(id, sizeof(id), "id", arg);
if (!r)
r = get_param_value(id, sizeof(id), "name", arg);
if (!r)
r = get_param_value(id, sizeof(id), "host", arg);
We end up with invalid ID "00:19.0".
Is there a technical reason why we must have an ID? I doubt it.
Work-around: -device pci-assign,host=00:19.1
See the last section of docs/qdev-device-use.txt for details.