linux-kernel - Re: [PATCH v2 0/4] iommu: Add device fault reporting API

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Message-ID: <20190612115858.733edacc@jacob-builder>
Date:   Wed, 12 Jun 2019 11:58:58 -0700
From:   Jacob Pan <jacob.jun.pan@...ux.intel.com>
To:     Joerg Roedel <joro@...tes.org>
Cc:     Jean-Philippe Brucker <jean-philippe.brucker@....com>,
        "alex.williamson@...hat.com" <alex.williamson@...hat.com>,
        "eric.auger@...hat.com" <eric.auger@...hat.com>,
        "ashok.raj@...el.com" <ashok.raj@...el.com>,
        "yi.l.liu@...el.com" <yi.l.liu@...el.com>,
        "robdclark@...il.com" <robdclark@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "iommu@...ts.linux-foundation.org" <iommu@...ts.linux-foundation.org>,
        Robin Murphy <Robin.Murphy@....com>,
        jacob.jun.pan@...ux.intel.com
Subject: Re: [PATCH v2 0/4] iommu: Add device fault reporting API

On Wed, 12 Jun 2019 15:11:43 +0200
Joerg Roedel <joro@...tes.org> wrote:

> On Wed, Jun 12, 2019 at 12:54:51PM +0100, Jean-Philippe Brucker wrote:
> > Thanks! As discussed I think we need to add padding into the
> > iommu_fault structure before this reaches mainline, to make the
> > UAPI easier to extend in the future. It's already possible to
> > extend but requires introducing a new ABI version number and
> > support two structures. Adding some padding would only require
> > introducing new flags. If there is no objection I'll send a
> > one-line patch bumping the structure size to 64 bytes (currently
> > 48)  
> 
> Sounds good, please submit the patch.
> 
Could you also add padding to page response per our discussion here?
https://lkml.org/lkml/2019/6/12/1131

> Regards,
> 
> 	Joerg

[Jacob Pan]