linux-kernel - Re: [KVM PATCH v2 2/2] kvm: add support for irqfd via eventfd-notification interface

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Date:	Tue, 28 Apr 2009 12:35:56 +0300
From:	Avi Kivity <avi@...hat.com>
To:	Gregory Haskins <ghaskins@...ell.com>
CC:	kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
	davidel@...ilserver.org
Subject: Re: [KVM PATCH v2 2/2] kvm: add support for irqfd via	eventfd-notification
 interface

Gregory Haskins wrote:

  

>> Sure, the interface remains the same (write 8 bytes), but the
>> implementation can change.  For example, we can implement it to work
>> from interrupt context, once we hack the locking appropriately.
>>     
>
> I was thinking more along the lines of eventfd_signal().  AIO and vbus
> currently use this interface, as opposed to the more polymorhpic
> f_ops->write().
>
>   

But eventfd_signal basically marries us to eventfd.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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