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From: Jacob Pan <jacob.pan@linux.microsoft.com>
To: Yi Liu <yi.l.liu@intel.com>
Cc: <linux-kernel@vger.kernel.org>,
	"iommu@lists.linux.dev" <iommu@lists.linux.dev>,
	Jason Gunthorpe <jgg@nvidia.com>,
	Alex Williamson <alex@shazbot.org>,
	Joerg Roedel <joro@8bytes.org>,
	Mostafa Saleh <smostafa@google.com>,
	David Matlack <dmatlack@google.com>,
	Robin Murphy <robin.murphy@arm.com>,
	Nicolin Chen <nicolinc@nvidia.com>,
	"Tian, Kevin" <kevin.tian@intel.com>,
	Baolu Lu <baolu.lu@linux.intel.com>,
	Saurabh Sengar <ssengar@linux.microsoft.com>,
	<skhawaja@google.com>, <pasha.tatashin@soleen.com>,
	Will Deacon <will@kernel.org>,
	jacob.pan@linux.microsoft.com
Subject: Re: [PATCH v6 7/7] Documentation: Update VFIO NOIOMMU mode
Date: Fri, 22 May 2026 20:42:10 -0700	[thread overview]
Message-ID: <20260522204210.00002858@linux.microsoft.com> (raw)
In-Reply-To: <18733b82-9f59-4a4b-b37c-69a2e367a0ab@intel.com>

Hi Yi,

On Fri, 22 May 2026 17:42:42 +0800
Yi Liu <yi.l.liu@intel.com> wrote:

> > ++------+-------+-----------+------+---------+---------------------------+
> > +| Case | GROUP | Container | CDEV | NOIOMMU | Notes
> >      |
> > ++======+=======+===========+======+=========+===========================+
> > +|  1   |   y   |     y     |  n   |   yes   | Group noiommu works
> >      |
> > ++------+-------+-----------+------+---------+---------------------------+
> > +|  2   |   y   |     n     |  n   |   no    | Blocked - no
> > container    |
> > ++------+-------+-----------+------+---------+---------------------------+
> > +|  3   |   y   |     y     |  y   |   yes   | Both paths work
> >      |
> > ++------+-------+-----------+------+---------+---------------------------+
> > +|  4   |   y   |     n     |  y   |   no    | Blocked - no
> > container    |
> > ++------+-------+-----------+------+---------+---------------------------+
> > +|  5   |   n   |     -     |  y   |   yes   | Cdev-only works
> >      |
> > ++------+-------+-----------+------+---------+---------------------------+
> > +|  6   |   n   |     -     |  n   |   no    | No access path
> >      |
> > ++------+-------+-----------+------+---------+---------------------------+
> > +  
> 
> Does "Bloked" mean no access path or no chance to compile? :)
By “Blocked”, I mean Kconfig prevents that combination from being
selected, so it is not buildable as such; consequently there is no
access path at runtime.

  reply	other threads:[~2026-05-23  3:42 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-21 22:11 [PATCH v6 0/7] iommufd: Enable noiommu mode for cdev Jacob Pan
2026-05-21 22:11 ` [PATCH v6 1/7] iommufd: Support a HWPT without an iommu driver for noiommu Jacob Pan
2026-05-21 22:11 ` [PATCH v6 2/7] iommufd: Move igroup allocation to a function Jacob Pan
2026-05-22  6:00   ` Baolu Lu
2026-05-21 22:11 ` [PATCH v6 3/7] iommufd: Allow binding to a noiommu device Jacob Pan
2026-05-22  6:01   ` Baolu Lu
2026-05-21 22:11 ` [PATCH v6 4/7] iommufd: Add an ioctl to query PA from IOVA for noiommu mode Jacob Pan
2026-05-22  9:22   ` Yi Liu
2026-05-23 22:09     ` Jacob Pan
2026-05-21 22:11 ` [PATCH v6 5/7] vfio: Enable cdev noiommu mode under iommufd Jacob Pan
2026-05-22  9:19   ` Yi Liu
2026-05-23 22:01     ` Jacob Pan
2026-05-25  6:29       ` Yi Liu
2026-05-28 18:52         ` Jacob Pan
2026-05-29  7:27           ` Yi Liu
2026-05-21 22:11 ` [PATCH v6 6/7] selftests/vfio: Add iommufd noiommu mode selftest for cdev Jacob Pan
2026-05-21 22:39   ` David Matlack
2026-06-03  0:13     ` Jacob Pan
2026-05-21 22:11 ` [PATCH v6 7/7] Documentation: Update VFIO NOIOMMU mode Jacob Pan
2026-05-22  9:42   ` Yi Liu
2026-05-23  3:42     ` Jacob Pan [this message]
2026-05-25  6:29       ` Yi Liu
2026-05-25  8:30 ` [PATCH v6 0/7] iommufd: Enable noiommu mode for cdev Tian, Kevin
2026-05-26 15:32   ` Jacob Pan
2026-05-26 17:57     ` Alex Williamson
2026-05-27 22:34       ` Jacob Pan

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