linux-kernel - Re: [PATCH v5 1/9] iommu/vt-d: Global PASID name space

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Message-ID: <20180716052815.GA20520@xz-mi>
Date:   Mon, 16 Jul 2018 13:28:15 +0800
From:   Peter Xu <peterx@...hat.com>
To:     Lu Baolu <baolu.lu@...ux.intel.com>
Cc:     Joerg Roedel <joro@...tes.org>,
        David Woodhouse <dwmw2@...radead.org>, ashok.raj@...el.com,
        sanjay.k.kumar@...el.com, jacob.jun.pan@...el.com,
        kevin.tian@...el.com, yi.l.liu@...el.com, yi.y.sun@...el.com,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Jacob Pan <jacob.jun.pan@...ux.intel.com>
Subject: Re: [PATCH v5 1/9] iommu/vt-d: Global PASID name space

On Sat, Jul 14, 2018 at 03:46:54PM +0800, Lu Baolu wrote:
> This adds the system wide PASID name space for the PASID
> allocation. Currently we are using per IOMMU PASID name
> spaces which are not suitable for some use cases. For an
> example, one application (associated with a PASID) might
> talk to two physical devices simultaneously while the two
> devices could reside behind two different IOMMU units.
> 
> Cc: Ashok Raj <ashok.raj@...el.com>
> Cc: Jacob Pan <jacob.jun.pan@...ux.intel.com>
> Cc: Kevin Tian <kevin.tian@...el.com>
> Cc: Liu Yi L <yi.l.liu@...el.com>
> Suggested-by: Ashok Raj <ashok.raj@...el.com>
> Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
> Reviewed-by: Kevin Tian <kevin.tian@...el.com>
> Reviewed-by: Liu Yi L <yi.l.liu@...el.com>

Reviewed-by: Peter Xu <peterx@...hat.com>

-- 
Peter Xu