linux-kernel - Re: Hardware support for vt-posted interrupts described in vt-directed-io-spec for assigned devices

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Message-ID: <1426861282.3643.472.camel@redhat.com>
Date:	Fri, 20 Mar 2015 08:21:22 -0600
From:	Alex Williamson <alex.williamson@...hat.com>
To:	Eric Auger <eric.auger@...aro.org>
Cc:	bk rakesh <rakeshbkrish@...il.com>, linux-kernel@...r.kernel.org,
	kvm@...r.kernel.org, jiang.liu@...ux.intel.com
Subject: Re: Hardware support for vt-posted interrupts described in
 vt-directed-io-spec for assigned devices

On Fri, 2015-03-20 at 15:10 +0100, Eric Auger wrote:
> On 03/20/2015 03:04 PM, Alex Williamson wrote:
> > On Fri, 2015-03-20 at 15:24 +0530, bk rakesh wrote:
> >> Adding few more information regarding the setup which i had created to
> >> test the vt-d posted interrupts for assigned devices,
> >>
> >> Hardware used for evaluating vt-posted interrupts
> >>     cpu "E5-2620 v2 @ 2.10GHz" and "S2600CP server board"
> >>
> >> I had used kernel-3.18 patched with "KVM-VFIO IRQ forward
> >> control(posted by eric.auger@...aro.org)",
> > 
> > IRQ forwarding in an ARM technology for handling level triggered
> > interrupts, not Intel, not even x86.
> 
> Hi Alex,
> 
> Feng's series relies on few pacth files in "KVM-VFIO IRQ forward
> control", basically for KVM_DEV_VFIO_DEVICE group introduction in
> KVM-VFIO. This explains why you find some references to that patch here
> I guess.

Ah yes, makes sense.  Thanks,

Alex

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