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Re: [Qemu-devel] [PATCH 0/2] port over extboot from kvm

From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH 0/2] port over extboot from kvm
Date: Wed, 11 Nov 2009 07:25:09 -0600
User-agent: Thunderbird (X11/20090825)

Hannes Reinecke wrote:
But why? Why do we have to emulate the entire HBA for the BIOS?
The HBA is emulated, too, and just uses the bdrv interface
internally anyway.
So IMHO it makes far more sense to skip the HBA emulation in
the BIOS completely and just use the bdrv interface directly

If you use the bdrv interface (ala extboot), you couldn't boot via scsi passthrough.

VirtualBox implements a paravirtual SCSI bus to allow SCSI boot without having to implement a full LSI driver. That's another way to solve the problem.


Anthony Liguori

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