linux-kernel - Re: [RFC 12/17] irq: bypass: Extend skeleton for ARM forwarding control

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Date:	Fri, 3 Jul 2015 09:02:44 +0200
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	Eric Auger <eric.auger@...aro.org>, "Wu, Feng" <feng.wu@...el.com>,
	"eric.auger@...com" <eric.auger@...com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"kvmarm@...ts.cs.columbia.edu" <kvmarm@...ts.cs.columbia.edu>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"christoffer.dall@...aro.org" <christoffer.dall@...aro.org>,
	"marc.zyngier@....com" <marc.zyngier@....com>,
	"alex.williamson@...hat.com" <alex.williamson@...hat.com>,
	"avi.kivity@...il.com" <avi.kivity@...il.com>,
	"mtosatti@...hat.com" <mtosatti@...hat.com>,
	"joro@...tes.org" <joro@...tes.org>,
	"b.reynal@...tualopensystems.com" <b.reynal@...tualopensystems.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"patches@...aro.org" <patches@...aro.org>
Subject: Re: [RFC 12/17] irq: bypass: Extend skeleton for ARM forwarding
 control



On 03/07/2015 08:54, Eric Auger wrote:
>> > Oh... we can get gsi from irq_bypass_consumer -> _irqfd -> gsi, so it
>> > is not needed in irq_bypass_consumer. Got it! :)
> The issue I have is that struct _irqfd is local to eventfd.c so it
> cannot be used in archi specific code. Is it acceptable to move it to
> kvm_host.h, naming it something like kvm_kernel_irqfd (as done for
> kvm_kernel_irq_routing_entry)? Would also need to move _irqfd_resampler
> there (kvm_kernel_irqfd_resampler).

Yes, that's okay.  Can you put it in a new header file kvm_irqfd.h though?

Paolo

> irqfd user struct cannot be used in a standalone manner since we miss
> the kvm handle.
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