From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Auger <eric.auger-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Subject: Re: [RFC v4 07/14] msi: Add a new MSI_FLAG_IRQ_REMAPPING flag
Date: Mon, 29 Feb 2016 16:25:39 +0100
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To: Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>
Cc: eric.auger-qxv4g6HH51o@public.gmane.org, jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org, kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, patches-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org, marc.zyngier-5wv7dgnIgG8@public.gmane.org, p.fedin-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org, Manish.Jaggi-M3mlKVOIwJVv6pq1l3V1OdBPR1lH4CV8@public.gmane.org, pranav.sawargaonkar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, kvmarm-FPEHb7Xf0XXUo1n7N8X6UoWGPAHP3yOg@public.gmane.org, christoffer.dall-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
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Hi Thomas,
On 02/26/2016 07:06 PM, Thomas Gleixner wrote:
> On Fri, 26 Feb 2016, Eric Auger wrote:
> 
>> Let's introduce a new msi_domain_info flag value, MSI_FLAG_IRQ_REMAPPING
>> meant to tell the domain supports IRQ REMAPPING, also known as Interrupt
>> Translation Service. On Intel HW this capability is abstracted on IOMMU
>> side while on ARM it is abstracted on MSI controller side.
>>
>> GICv3 ITS HW is the first HW advertising that feature.
> 
> No. We add the flag, epxlain what it does and then in a second step add the
> user _after_ all other preliminaries are implemented.
Sure I will proceed that way.

Best Regards

Eric
>  
> Thanks,
> 
> 	tglx
>