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From: "Sebastian Herbszt" <herbszt@gmx.de>
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Subject: Re: [Qemu-devel] Re: qdev property bug?
Date: Mon, 14 Dec 2009 21:38:25 +0100
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To: Gerd Hoffmann <kraxel@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>
Cc: glommer@redhat.com, Kevin O'Connor <kevin@koconnor.net>, Alexander Graf <agraf@suse.de>, qemu-devel@nongnu.org

Gerd Hoffmann wrote:
> On 12/14/09 21:20, Michael S. Tsirkin wrote:
>>> So far, it's not clear to me that anyone has demonstrated how this is
>>> harmful for people that don't want pxe booting.  Assuming we fix the bug
>>> about rom loading, then there's really no impact to users.
> 
> Fix (v2) is on the list already.
> 
>> PXE booting might have security impact. You do not want to
>> do this if you are on a hostile network.
> 
> Option rom loaded doesn't imply pxe boot will be tried.  It only means 
> PXE boot can be selected, either via
> 
>   -boot order=[something with 'n' here]
> 
> or via
> 
>   -boot menu=on + F12 + picking menu entry
> 
> By default qemu doesn't try to PXE-boot, even if no other bootable 
> device is available.

Tho this depends on the option rom, e.g. Etherboot hooks INT 19h.

- Sebastian