From: Jacob Pan <jacob.pan.linux@gmail.com>
To: iommu@lists.linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
Jean-Philippe Brucker <jean-philippe@linaro.com>,
"Lu Baolu" <baolu.lu@linux.intel.com>,
Joerg Roedel <joro@8bytes.org>,
David Woodhouse <dwmw2@infradead.org>
Cc: Yi Liu <yi.l.liu@intel.com>, "Tian, Kevin" <kevin.tian@intel.com>,
Raj Ashok <ashok.raj@intel.com>,
Eric Auger <eric.auger@redhat.com>, Wu Hao <hao.wu@intel.com>
Subject: [PATCH v2 0/9] IOASID extensions for guest SVA
Date: Fri, 21 Aug 2020 21:35:09 -0700 [thread overview]
Message-ID: <1598070918-21321-1-git-send-email-jacob.jun.pan@linux.intel.com> (raw)
IOASID was introduced in v5.5 as a generic kernel allocator service for
both PCIe Process Address Space ID (PASID) and ARM SMMU's Sub Stream
ID. In addition to basic ID allocation, ioasid_set was defined as a
token that is shared by a group of IOASIDs. This set token can be used
for permission checking, but lack of some features to address the
following needs by guest Shared Virtual Address (SVA).
- Manage IOASIDs by group, group ownership, quota, etc.
- State synchronization among IOASID users
- Non-identity guest-host IOASID mapping
- Lifecycle management across many users
This patchset introduces the following extensions as solutions to the
problems above.
- Redefine and extend IOASID set such that IOASIDs can be managed by groups.
- Add notifications for IOASID state synchronization
- Add reference counting for life cycle alignment among users
- Support ioasid_set private IDs, which can be used as guest IOASIDs
Please refer to Documentation/ioasid.rst in enclosed patch 1/9 for more
details.
This patchset only included VT-d driver as users of some of the new APIs.
VFIO and KVM patches are coming up to fully utilize the APIs introduced
here.
You can find this series at:
https://github.com/jacobpan/linux.git ioasid_ext_v2
(VFIO and KVM patches will be available at this branch when published.)
This work is a result of collaboration with many people:
Liu, Yi L <yi.l.liu@intel.com>
Wu Hao <hao.wu@intel.com>
Ashok Raj <ashok.raj@intel.com>
Kevin Tian <kevin.tian@intel.com>
Thanks,
Jacob
Changelog
V2:
- Redesigned ioasid_set APIs, removed set ID
- Added set private ID (SPID) for guest PASID usage.
- Add per ioasid_set notification and priority support.
- Back to use spinlocks and atomic notifications.
- Added async work in VT-d driver to perform teardown outside atomic context
Jacob Pan (9):
docs: Document IO Address Space ID (IOASID) APIs
iommu/ioasid: Rename ioasid_set_data()
iommu/ioasid: Introduce ioasid_set APIs
iommu/ioasid: Add reference couting functions
iommu/ioasid: Introduce ioasid_set private ID
iommu/ioasid: Introduce notification APIs
iommu/vt-d: Listen to IOASID notifications
iommu/vt-d: Send IOASID bind/unbind notifications
iommu/vt-d: Store guest PASID during bind
Documentation/ioasid.rst | 618 ++++++++++++++++++++++++++++++++
drivers/iommu/intel/iommu.c | 27 +-
drivers/iommu/intel/pasid.h | 1 +
drivers/iommu/intel/svm.c | 97 ++++-
drivers/iommu/ioasid.c | 835 ++++++++++++++++++++++++++++++++++++++++++--
include/linux/intel-iommu.h | 2 +
include/linux/ioasid.h | 166 ++++++++-
7 files changed, 1699 insertions(+), 47 deletions(-)
create mode 100644 Documentation/ioasid.rst
--
2.7.4
next reply other threads:[~2020-08-22 4:28 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-22 4:35 Jacob Pan [this message]
2020-08-22 4:35 ` [PATCH v2 1/9] docs: Document IO Address Space ID (IOASID) APIs Jacob Pan
2020-08-23 7:05 ` Lu Baolu
2020-08-28 17:01 ` Jacob Pan
2020-08-24 10:32 ` Jean-Philippe Brucker
2020-08-27 16:21 ` Auger Eric
2020-09-01 16:56 ` Jacob Pan
2020-09-07 8:03 ` Auger Eric
2020-08-28 22:24 ` Jacob Pan
2020-08-22 4:35 ` [PATCH v2 2/9] iommu/ioasid: Rename ioasid_set_data() Jacob Pan
2020-08-24 18:29 ` Jean-Philippe Brucker
2020-09-01 11:51 ` Auger Eric
2020-08-22 4:35 ` [PATCH v2 3/9] iommu/ioasid: Introduce ioasid_set APIs Jacob Pan
2020-08-22 12:53 ` kernel test robot
2020-08-24 2:24 ` Lu Baolu
2020-09-01 21:28 ` Jacob Pan
2020-09-02 2:39 ` Lu Baolu
2020-08-24 18:28 ` Jean-Philippe Brucker
2020-08-24 18:30 ` Randy Dunlap
2020-09-02 21:46 ` Jacob Pan
2020-08-24 18:34 ` Randy Dunlap
2020-09-02 21:47 ` Jacob Pan
2020-09-02 21:44 ` Jacob Pan
2020-09-01 11:51 ` Auger Eric
2020-09-03 21:07 ` Jacob Pan
2020-09-07 8:04 ` Auger Eric
2020-08-22 4:35 ` [PATCH v2 4/9] iommu/ioasid: Add reference couting functions Jacob Pan
2020-08-24 2:26 ` Lu Baolu
2020-08-25 10:20 ` Jean-Philippe Brucker
2020-08-25 10:19 ` Jean-Philippe Brucker
2020-09-01 12:13 ` Auger Eric
2020-09-24 18:29 ` Shameerali Kolothum Thodi
2020-08-22 4:35 ` [PATCH v2 5/9] iommu/ioasid: Introduce ioasid_set private ID Jacob Pan
2020-08-22 8:36 ` kernel test robot
2020-08-22 9:03 ` kernel test robot
2020-08-25 10:22 ` Jean-Philippe Brucker
2020-09-08 22:19 ` Jacob Pan
2020-09-01 15:38 ` Auger Eric
2020-09-08 22:40 ` Jacob Pan
2020-09-10 9:18 ` Auger Eric
2020-08-22 4:35 ` [PATCH v2 6/9] iommu/ioasid: Introduce notification APIs Jacob Pan
2020-08-25 10:26 ` Jean-Philippe Brucker
2020-09-09 20:37 ` Jacob Pan
2020-09-01 16:49 ` Auger Eric
2020-09-09 22:58 ` Jacob Pan
2020-09-10 8:59 ` Auger Eric
2020-08-22 4:35 ` [PATCH v2 7/9] iommu/vt-d: Listen to IOASID notifications Jacob Pan
2020-09-01 17:03 ` Auger Eric
2020-08-22 4:35 ` [PATCH v2 8/9] iommu/vt-d: Send IOASID bind/unbind notifications Jacob Pan
2020-08-22 4:35 ` [PATCH v2 9/9] iommu/vt-d: Store guest PASID during bind Jacob Pan
2020-09-01 17:08 ` Auger Eric
2020-09-10 17:12 ` Jacob Pan
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