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Date: Fri, 21 Oct 2011 09:09:10 +0200
From: Jan Kiszka <jan.kiszka@siemens.com>
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Subject: Re: [Qemu-devel] [RFC][PATCH 28/45] qemu-kvm: msix: Drop tracking
	of used vectors
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To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alex Williamson <alex.williamson@redhat.com>, Marcelo Tosatti <mtosatti@redhat.com>, Avi Kivity <avi@redhat.com>, "kvm@vger.kernel.org" <kvm@vger.kernel.org>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>

On 2011-10-21 00:02, Michael S. Tsirkin wrote:
>>> Yes. But this still makes an API for acquiring per-vector resources a requirement.
>>
>> Yes, but a different one than current use/unuse.
> 
> What's wrong with use/unuse as an API? It's already in place
> and virtio calls it.

Not for that purpose. It remains a useless API in the absence of KVM's
requirements.

> 
>> And it will be an
>> optional one, only for those devices that need to establish irq/eventfd
>> channels.
>>
>> Jan
> 
> Not sure this should be up to the device.

The device provides the fd. At least it acquires and associates it.

Jan

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