linux-kernel - RE: [PATCH 0/3] iommu: Expose IOMMU information in sysfs

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Message-ID: <092459cf6aa04425bae1bd19b746f0fc@BL2PR03MB468.namprd03.prod.outlook.com>
Date:	Thu, 3 Jul 2014 17:43:26 +0000
From:	Varun Sethi <Varun.Sethi@...escale.com>
To:	Alex Williamson <alex.williamson@...hat.com>,
	Joerg Roedel <joro@...tes.org>
CC:	"iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH 0/3] iommu: Expose IOMMU information in sysfs

Hi Alex,
This is on my todo list. I have a requirement for adding sysfs support for PAMU.

Regards
Varun
> -----Original Message-----
> From: Alex Williamson [mailto:alex.williamson@...hat.com]
> Sent: Thursday, July 03, 2014 9:39 PM
> To: Joerg Roedel
> Cc: iommu@...ts.linux-foundation.org; dwmw2@...radead.org; linux-
> kernel@...r.kernel.org; Sethi Varun-B16395
> Subject: Re: [PATCH 0/3] iommu: Expose IOMMU information in sysfs
> 
> On Mon, 2014-06-16 at 09:24 -0600, Alex Williamson wrote:
> > On Mon, 2014-06-16 at 17:16 +0200, Joerg Roedel wrote:
> > > On Thu, Jun 12, 2014 at 04:12:18PM -0600, Alex Williamson wrote:
> > > > Alex Williamson (3):
> > > >       iommu: Add sysfs support for IOMMUs
> > > >       iommu/intel: Make use of IOMMU sysfs support
> > > >       iommu/amd: Add sysfs support
> > >
> > > I like the general approach. But why do you only enable the x86
> iommus?
> > > Some ARM IOMMUs and PAMU would certainly also benefit from a sysfs
> > > representation of which device is translated by which IOMMU.
> >
> > Only because I have no ability to test the others platforms.  I'd be
> > thrilled if someone working on those IOMMUs could validate this on
> > non-x86.  Thanks,
> 
> Should I re-send this series or are you hoping I'll attempt to piece
> together a non-x86 user for which I have no hardware and can't test?
> Varun, do you have any interest in this for the fsl iommu to try a proof
> of concept?  Thanks,
> 
> Alex