Re: [SeaBIOS] [PATCH v2 3/6] boot: bump priority of storage-device option ROMs

[Paolo Bonzini]

Il 28/10/2012 02:09, Kevin O'Connor ha scritto:
> On Wed, Oct 17, 2012 at 06:23:45PM +0200, Paolo Bonzini wrote:
> > Right now, BCVs have DefaultHDPrio priority, while BEVs have
> > DefaultBEVPrio priority.  The right thing to do instead is to
> > look at the PCI class, while keeping DefaultHDPrio priority
> > for legacy option ROMs.
>
> Thanks Paolo.  Sorry for the delay in reviewing.
>
> Can you explain this further?  How could a device register a BCV
> that's not for a hard drive?  The BCV system is designed to allow roms
> to be ordered when they hook the int13 vector - if they're not
> registering a hard drive in that process it seems like a bug.

I was confused by KVM's virtual APIC option ROM, which uses a dummy BCV.

Paolo