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Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue

From: Stefan Hajnoczi
Subject: Re: [Qemu-devel] [PATCH v5 2/4] virtio-pci: Use ioeventfd for virtqueue notify
Date: Tue, 25 Jan 2011 14:07:21 +0000 
On Tue, Jan 25, 2011 at 1:20 PM, Stefan Hajnoczi <address@hidden> wrote:
> eventfd does not seem to support O_ASYNC.

linux-2.6/fs/eventfd.c does not implement file_operations::fasync() so
I'm convinced SIGIO is not possible here.

I have sent a patch to disable virtio-ioeventfd when !CONFIG_IOTHREAD.

Stefan
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