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[Qemu-devel] RE: qemu fail to parse command line with "-pcidevice 00:19.
From: |
Hao, Xudong |
Subject: |
[Qemu-devel] RE: qemu fail to parse command line with "-pcidevice 00:19.0" |
Date: |
Fri, 25 Jun 2010 09:48:08 +0800 |
>Work-around: -device pci-assign,host=00:19.1
OK, this new way can work when create guest with static assignment.
But how to hot add a pci device to guest? the old hot add command "pci_add
pci_addr=auto host host=00:19.0" has the same parse error.
BTW: if we use add "-net none" in qemu command, guest can not be created and
nothing error printed.
Do you have plan to fix this parse issue?
Thanks,
Xudong
-----Original Message-----
From: Markus Armbruster [mailto:address@hidden
Sent: 2010年6月24日 14:08
To: Hao, Xudong
Cc: address@hidden; address@hidden; address@hidden
Subject: Re: qemu fail to parse command line with "-pcidevice 00:19.0"
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.