Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
IronPort-SDR: EQuy1YXZU1ZUHsEIbiMPSGfPewYu0IulUvXyeM0EYiMXUenlvL3FLMXt5Ha7WFKRrKnQGrBQp0
 ukMPLP0AUZrA==
IronPort-SDR: FWGMRCIDKc+4rShY/k2btbmNpB2Vde5BU/A9n1poyY3PXe4Ws5w3Xl/N5BgmtT1pk2Wkr9ZZko
 cDdb4dYAUqXA==
Date:   Wed, 8 Apr 2020 09:11:52 -0700
From:   Jacob Pan <jacob.jun.pan@linux.intel.com>
To:     Joerg Roedel <joro@8bytes.org>
Cc:     Lu Baolu <baolu.lu@linux.intel.com>,
        iommu@lists.linux-foundation.org,
        LKML <linux-kernel@vger.kernel.org>,
        David Woodhouse <dwmw2@infradead.org>,
        Jean-Philippe Brucker <jean-philippe@linaro.com>,
        Eric Auger <eric.auger@redhat.com>,
        Yi Liu <yi.l.liu@intel.com>,
        "Tian, Kevin" <kevin.tian@intel.com>,
        Raj Ashok <ashok.raj@intel.com>,
        Alex Williamson <alex.williamson@redhat.com>,
        Christoph Hellwig <hch@infradead.org>,
        Jonathan Cameron <jic23@kernel.org>,
        jacob.jun.pan@linux.intel.com
Subject: Re: [PATCH v11 02/10] iommu/uapi: Define a mask for bind data
Message-ID: <20200408091152.7e2a2fef@jacob-builder>
In-Reply-To: <20200408130722.GA27140@8bytes.org>
References: <1585939334-21396-1-git-send-email-jacob.jun.pan@linux.intel.com>
        <1585939334-21396-3-git-send-email-jacob.jun.pan@linux.intel.com>
        <20200408130722.GA27140@8bytes.org>
Organization: OTC
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

On Wed, 8 Apr 2020 15:07:22 +0200
Joerg Roedel <joro@8bytes.org> wrote:

> On Fri, Apr 03, 2020 at 11:42:06AM -0700, Jacob Pan wrote:
> > Memory type related flags can be grouped together for one simple
> > check.
> > 
> > ---
> > v9 renamed from EMT to MTS since these are memory type support
> > flags. ---
> > 
> > Reviewed-by: Eric Auger <eric.auger@redhat.com>
> > Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
> > ---
> >  include/uapi/linux/iommu.h | 5 ++++-
> >  1 file changed, 4 insertions(+), 1 deletion(-)
> > 
> > diff --git a/include/uapi/linux/iommu.h b/include/uapi/linux/iommu.h
> > index 4ad3496e5c43..d7bcbc5f79b0 100644
> > --- a/include/uapi/linux/iommu.h
> > +++ b/include/uapi/linux/iommu.h
> > @@ -284,7 +284,10 @@ struct iommu_gpasid_bind_data_vtd {
> >  	__u32 pat;
> >  	__u32 emt;
> >  };
> > -
> > +#define IOMMU_SVA_VTD_GPASID_MTS_MASK
> > (IOMMU_SVA_VTD_GPASID_CD | \
> > +					 IOMMU_SVA_VTD_GPASID_EMTE
> > | \
> > +					 IOMMU_SVA_VTD_GPASID_PCD
> > |  \
> > +
> > IOMMU_SVA_VTD_GPASID_PWT)  
> 
> Where and how will this be used? Can you add this in the patch that
> actually makes use of it?
> 
They are used in later patch when setting up PASID entry for guest SVA.
[PATCH v11 04/10] iommu/vt-d: Add nested translation helper function

> Also please add newlines before and after that define.
> 
Will do, thanks.

> 
> Regards,
> 
> 	Joerg

[Jacob Pan]