linux-kernel - Re: [PATCH v8 0/6] kvm: level irqfd support

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Date:	Thu, 16 Aug 2012 19:54:04 +0300
From:	Avi Kivity <avi@...hat.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
CC:	Alex Williamson <alex.williamson@...hat.com>, gleb@...hat.com,
	kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 0/6] kvm: level irqfd support

On 08/16/2012 07:54 PM, Michael S. Tsirkin wrote:
> On Thu, Aug 16, 2012 at 07:39:35PM +0300, Avi Kivity wrote:
>> On 08/16/2012 07:36 PM, Michael S. Tsirkin wrote:
>> 
>> >> What if a level irqfd shares a line with a KVM_IRQ_LINE ioctl?  Then an
>> >> EOI can de-assert the irqfd source, but the line is kept high by the
>> >> last KVM_IRQ_LINE invocation.
>> > 
>> > Exactly. So 1 ID for userspace and 1 for irqfd.
>> 
>> Gaa, this mess belongs in userspace.
> 
> Not sure I understand what you refer to.
> 
> I meant simply
> #define KVM_IRQFD_IRQ_SOURCE_ID    1
> request it at kvm init.
> 
> As opposed to using KVM_USERSPACE_IRQ_SOURCE_ID like we do now
> for edge.
> Does this seem acceptable to you?

I meant the pic/ioapic, not this particular bit.


-- 
error compiling committee.c: too many arguments to function
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