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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
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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





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