linux-kernel - Re: [PATCH v5 01/23] iommu: introduce bind_pasid

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Message-ID: <20180828093616.30e1160f@jacob-builder>
Date:   Tue, 28 Aug 2018 09:36:16 -0700
From:   Jacob Pan <jacob.jun.pan@...ux.intel.com>
To:     Auger Eric <eric.auger@...hat.com>
Cc:     iommu@...ts.linux-foundation.org,
        LKML <linux-kernel@...r.kernel.org>,
        Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Alex Williamson <alex.williamson@...hat.com>,
        Jean-Philippe Brucker <jean-philippe.brucker@....com>,
        Yi L <yi.l.liu@...ux.intel.com>,
        Raj Ashok <ashok.raj@...el.com>,
        Rafael Wysocki <rafael.j.wysocki@...el.com>,
        Liu@...l.linuxfoundation.org, Jean Delvare <khali@...ux-fr.org>,
        jacob.jun.pan@...ux.intel.com
Subject: Re: [PATCH v5 01/23] iommu: introduce bind_pasid_table API function

On Tue, 28 Aug 2018 10:34:19 +0200
Auger Eric <eric.auger@...hat.com> wrote:

> > Anyway, for the new VT-d 3.0 spec. we no longer need this API. In
> > stead, I will introduce bind_guest_pasid() API, where per device
> > PASID table is allocated by the host.  
> 
> So what is the exact state of this series? Is it outdated as you don't
> target VT-d 2.5 anymore? Will you keep the rest of the API?

Hi Eric,

I am not targeting VT-d 2.5 for SVA related work. I am working on the
rest of the APIs for supporting VT-d v3, which includes guest PASID
bind, fault reporting, and invalidation passdown from the guest. These
are based on some recent patches from Baolu.
https://lkml.org/lkml/2018/7/16/62

So I feel it is better for you to take over bind_pasid_table() API in
your series. I will drop it from my next version.

Thanks,

Jacob