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[Qemu-devel] Re: [PATCH v3] Do not try loading option ROM for hotplug PC
From: |
Jes Sorensen |
Subject: |
[Qemu-devel] Re: [PATCH v3] Do not try loading option ROM for hotplug PCI device in pc-0.11 compat mode |
Date: |
Mon, 30 Aug 2010 15:59:59 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.8) Gecko/20100806 Fedora/3.1.2-1.fc13 Lightning/1.0b2pre Thunderbird/3.1.2 |
On 08/30/10 15:45, Anthony Liguori wrote:
> On 08/30/2010 08:11 AM, Jes Sorensen wrote:
>> If you run in -M pc-0.11 or older option ROMs are provided via fw_cfg,
>> which means QEMU is unable to load it after boot time if you try to
>> hot-plug a new network device via the monitor. Instead it decides to
>> exit with an error.
>>
>
> Which network device?
>
> Take a look at ne2k.c's rom loading. It's got logic for rom loading
> with hotplug but e1000 and rtl8139 don't. Maybe it's because ne2k also
> supports an ISA mode?
It happens with virtio-net as well which is where I saw it first.
However, it's really only an issue in compat mode since with 0.12
onwards we can load option ROMs on the fly.
Cheers,
Jes