linux-kernel - Re: [PATCH v3 6/8] iommu/vt-d: Replace Intel specific PASID allocator with IOASID

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Message-ID: <20191120151946.2a94c1ee@jacob-builder>
Date:   Wed, 20 Nov 2019 15:19:46 -0800
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>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        David Woodhouse <dwmw2@...radead.org>,
        "Tian, Kevin" <kevin.tian@...el.com>,
        Raj Ashok <ashok.raj@...el.com>, Yi Liu <yi.l.liu@...el.com>,
        "Mehta, Sohil" <sohil.mehta@...el.com>,
        jacob.jun.pan@...ux.intel.com
Subject: Re: [PATCH v3 6/8] iommu/vt-d: Replace Intel specific PASID
 allocator with IOASID

On Wed, 20 Nov 2019 22:06:24 +0100
Auger Eric <eric.auger@...hat.com> wrote:

> Hi Jacob,
> 
> On 11/19/19 6:56 PM, Jacob Pan wrote:
> > Make use of generic IOASID code to manage PASID allocation,
> > free, and lookup. Replace Intel specific code.
> > IOASID allocator is inclusive for both start and end of the
> > allocation range. The current code is based on IDR, which is
> > exclusive for the end of the allocation range. This patch fixes the
> > off-by-one error in intel_svm_bind_mm, where pasid_max - 1 is used
> > for the end of allocation range.  
> no more as this is handled in 5/8
oops, forgot that. will remove this comment.
Thanks!
>  [...]  
> Besides
> Reviewed-by: Eric Auger <eric.auger@...hat.com>
> 
> Thanks
> 
> Eric
> 

[Jacob Pan]