From: "Tian, Kevin" <kevin.tian@intel.com>
To: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>,
valmiki <valmikibow@gmail.com>,
Alex Williamson <alex.williamson@redhat.com>
Cc: "iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
"linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>,
"Lan, Tianyu" <tianyu.lan@intel.com>,
"Pan, Jacob jun" <jacob.jun.pan@intel.com>
Subject: RE: Support SVM without PASID
Date: Fri, 4 Aug 2017 01:49:38 +0000 [thread overview]
Message-ID: <AADFC41AFE54684AB9EE6CBC0274A5D190D57191@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <564ba70b-db95-7fe0-86bb-bb4eefcd87ec@arm.com>
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WARNING: multiple messages have this Message-ID (diff)
From: "Tian, Kevin" <kevin.tian-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
To: Jean-Philippe Brucker
<jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>,
valmiki <valmikibow-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
Alex Williamson
<alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: "Lan,
Tianyu" <tianyu.lan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org"
<iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org>,
"Pan,
Jacob jun"
<jacob.jun.pan-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<kvm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: RE: Support SVM without PASID
Date: Fri, 4 Aug 2017 01:49:38 +0000 [thread overview]
Message-ID: <AADFC41AFE54684AB9EE6CBC0274A5D190D57191@SHSMSX101.ccr.corp.intel.com> (raw)
In-Reply-To: <564ba70b-db95-7fe0-86bb-bb4eefcd87ec-5wv7dgnIgG8@public.gmane.org>
> From: Jean-Philippe Brucker
> Sent: Tuesday, August 1, 2017 4:26 PM
>
> It depends what type you use when registering the IOMMU with
> VFIO_SET_IOMMU:
>
> * If the type is VFIO_TYPE1v2_IOMMU, then
> VFIO_IOMMU_MAP/UNMAP_DMA
> affects the stage-1 non-PASID context (already the case in mainline).
> In addition, with my patch the BIND ioctl will affect stage-1 PASID
> contexts, and bind process page directories to the device (host SVM).
>
> * If the type is VFIO_TYPE1_NESTING_IOMMU, then
> VFIO_IOMMU_MAP/UNMAP_DMA
> will affect stage-2 mappings (already in mainline).
> With my SMMU patch series, the BIND ioctl is not supported in this mode.
> But in the future, BIND would allow to manage stage-1 as well:
> - bind a process page directory (host SVM with added stage-2), or
I thought host SVM will only go through VFIO_TYPE1v2_IOMMU,
since you said stage-2 in ARM SMMU is only for GPA->HPA usage
in previous explanation. then what does "host SVM with added
stage-2" mean here?
> - bind a guest page directory (viommu), or
> - bind the full stage-1 context table (viommu).
>
> Thanks,
> Jean
next prev parent reply other threads:[~2017-08-04 1:49 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-08 17:03 Support SVM without PASID valmiki
2017-07-08 17:03 ` valmiki
2017-07-08 20:02 ` Alex Williamson
2017-07-08 20:02 ` Alex Williamson
2017-07-09 3:15 ` valmiki
2017-07-09 9:29 ` Liu, Yi L
2017-07-10 0:14 ` Bob Liu
2017-07-10 0:14 ` Bob Liu
2017-07-10 19:31 ` Jerome Glisse
2017-07-12 16:23 ` valmiki
2017-07-12 16:23 ` valmiki
2017-07-11 10:56 ` Jean-Philippe Brucker
2017-07-11 10:56 ` Jean-Philippe Brucker
2017-07-12 16:27 ` valmiki
2017-07-12 16:27 ` valmiki
2017-07-12 16:48 ` Jean-Philippe Brucker
2017-07-22 2:05 ` valmiki
2017-08-01 8:26 ` Jean-Philippe Brucker
2017-08-01 8:26 ` Jean-Philippe Brucker
2017-08-01 17:38 ` valmiki
2017-08-01 17:38 ` valmiki
2017-08-01 18:40 ` Jean-Philippe Brucker
2017-08-05 5:14 ` valmiki
2017-08-07 10:31 ` Jean-Philippe Brucker
2017-08-07 12:18 ` Bob Liu
2017-08-07 12:18 ` Bob Liu
2017-08-07 12:52 ` Jean-Philippe Brucker
2017-08-08 0:51 ` Bob Liu
2017-08-08 0:51 ` Bob Liu
2017-08-09 15:01 ` Jean-Philippe Brucker
2017-08-11 6:41 ` Tian, Kevin
2017-08-11 9:25 ` Jean-Philippe Brucker
2017-08-11 9:25 ` Jean-Philippe Brucker
2017-08-11 9:36 ` Bob Liu
2017-08-12 12:10 ` valmiki
2017-08-14 7:49 ` Tian, Kevin
2017-08-28 13:10 ` Bharat Kumar Gogada
2017-08-28 13:10 ` Bharat Kumar Gogada
2017-08-29 1:32 ` Tian, Kevin
2017-08-04 1:49 ` Tian, Kevin [this message]
2017-08-04 1:49 ` Tian, Kevin
2017-08-04 9:42 ` Jean-Philippe Brucker
2017-08-11 6:29 ` Tian, Kevin
2017-08-11 6:29 ` Tian, Kevin
2017-08-11 16:25 ` Raj, Ashok
2017-08-14 8:00 ` Tian, Kevin
2017-08-14 8:00 ` Tian, Kevin
2017-08-14 9:07 ` Jean-Philippe Brucker
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