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References: <20180206203048.11096-1-rkagan@virtuozzo.com>
	<20180206203048.11096-34-rkagan@virtuozzo.com>
From: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <aad05cf2-fe8e-5d0a-a47c-2be496af39da@redhat.com>
Date: Wed, 7 Feb 2018 12:18:38 +0100
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Subject: Re: [Qemu-devel] [RFC PATCH 33/34] vmbus: add support for rom files
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To: Roman Kagan <rkagan@virtuozzo.com>, qemu-devel@nongnu.org
Cc: Ben Warren <ben@skyportsystems.com>, Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>, Krish Sadhukhan <krish.sadhukhan@oracle.com>, "Marcos E. Matsunaga" <Marcos.Matsunaga@oracle.com>, Jan Dakinevich <jan.dakinevich@virtuozzo.com>, Vadim Rozenfeld <vrozenfe@redhat.com>, "Denis V. Lunev" <den@openvz.org>, si-wei liu <si-wei.liu@oracle.com>, Vitaly Kuznetsov <vkuznets@redhat.com>, Cathy Avery <cavery@redhat.com>

On 06/02/2018 21:30, Roman Kagan wrote:
> In order to leverage third-party drivers for VMBus devices in firmware
> (in particular, there's a case with iPXE driver for hv-net in SeaBIOS
> and OVMF), introduce an infrastructure to supply such drivers as option
> ROMs.
> 
> To make it easy for the firmware to locate such ROMs, they are stored in
> fw_cfg with names "vmbus/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx.rom" for
> default class ROMs (where xxx... is the class GUID) and
> "vmbus/dev/yyyyyyyy-yyyy-yyyy-yyyy-yyyyyyyyyyyy.rom" for per-device
> (i.e. specified via .romfile property) ROMs (where yyy... is the device
> instance GUID).
> 
> The format and the calling convention for the ROMs is out of scope for
> this patch: QEMU doesn't try to interpret them.

Out of curiosity, do you have a SCSI driver for SeaBIOS and/or OVMF?

Thanks,

Paolo