linux-kernel - Re: [PATCH 2/2] iommu/vt-d: Replace intel SVM APIs with generic SVA APIs

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Message-ID: <20200320094328.GC1702630@myrica>
Date:   Fri, 20 Mar 2020 10:43:28 +0100
From:   Jean-Philippe Brucker <jean-philippe@...aro.org>
To:     Jacob Pan <jacob.jun.pan@...ux.intel.com>
Cc:     "Tian, Kevin" <kevin.tian@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Raj Ashok <ashok.raj@...el.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.com>,
        LKML <linux-kernel@...r.kernel.org>,
        iommu@...ts.linux-foundation.org,
        David Woodhouse <dwmw2@...radead.org>
Subject: Re: [PATCH 2/2] iommu/vt-d: Replace intel SVM APIs with generic SVA
 APIs

On Fri, Mar 20, 2020 at 10:29:55AM +0100, Jean-Philippe Brucker wrote:
> > - success:
> > -	*pasid = svm->pasid;
> > +success:
> > +	sdev->pasid = svm->pasid;
> > +	sdev->sva.dev = dev;
> > +	if (sd)
> > +		*sd = sdev;
> 
> One thing that might be missing: calling bind() multiple times with the
> same (dev, mm) pair should take references to the svm struct, so device
> drivers can call unbind() on it that many times.

Please disregard this, I missed sdev->users

Thanks,
Jean