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Re: [Qemu-devel] [PATCH] Use qemu_eventfd for POSIX AIO

From: Anthony Liguori
Subject: Re: [Qemu-devel] [PATCH] Use qemu_eventfd for POSIX AIO
Date: Tue, 27 Sep 2011 09:57:53 -0500
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20110516 Lightning/1.0b2 Thunderbird/3.1.10

On 09/27/2011 09:54 AM, Avi Kivity wrote:
On 09/27/2011 05:50 PM, Jan Kiszka wrote:
On 2011-09-27 16:48, Avi Kivity wrote:
> On 09/27/2011 05:45 PM, Jan Kiszka wrote:
>> I don't disagree that there is still room for improving the existing
>> interface, generalizing to qemu_event. But that's not in the scope of
>> this patch.
> Why not use event_notify.c?

It doesn't solve the wrapping issue, it mandates eventfd support.

We can add pipe fallbacks too (though if it was meant to use with vhost, that's
not what we want).

vhost cannot exist on a kernel that doesn't support eventfd so I don't think we need to worry about it.


Anthony Liguori

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