Hi, On 10/2/19 9:42 PM, Jacob Pan wrote: > This set consists of IOMMU APIs to support SVA in the guest, a.k.a nested > SVA. As the complete SVA support is complex, we break down the enabling > effort into three stages: > 1. PCI device direct assignment > 2. Fault handling, especially page request service support > 3. Mediated device assignment > > Each stage includes common API and vendor specific IOMMU driver changes. This > series is the common uAPI for stage #1. It is intended to build consensus on > the interface which all vendors reply on. > > This series is extracted from the complete stage1 set which includes VT-d > code. > https://lkml.org/lkml/2019/8/15/951 > > Changes: > - Use spinlock instead of mutex to protect ioasid custom allocators. This is > to support callers in atomic context > - Added more padding to guest PASID bind data for future extensions, > suggested > by Joerg. > After much thinking, I did not do name change from PASID to IOASID in the > uAPI, > considering we have been using PASID in the rest of uAPIs. IOASID will remain > used within the kernel. > > For more discussions lead to this series, checkout LPC 2019 VFIO/IOMMU/PCI > microconference materials. > https://linuxplumbersconf.org/event/4/sessions/66/#20190909 > > > Change log: > v4: - minor patch regroup and fixes based on review from Jean > v3: - include errno.h in ioasid.h to fix compile error > - rebased to v5.4-rc1, no change > > v2: > - Addressed review comments by Jean on IOASID custom allocators, locking > fix, misc control flow fix. > - Fixed a compile error with missing header errno.h > - Updated Jean-Philiippe's new email and updateded reviewed-by tag > > Jacob Pan (2): > iommu/ioasid: Add custom allocators > iommu: Introduce guest PASID bind function > > Jean-Philippe Brucker (1): > iommu: Add I/O ASID allocator > > Yi L Liu (1): > iommu: Introduce cache_invalidate API > > drivers/iommu/Kconfig | 4 + > drivers/iommu/Makefile | 1 + > drivers/iommu/ioasid.c | 422 > +++++++++++++++++++++++++++++++++++++++++++++ > drivers/iommu/iommu.c | 30 ++++ > include/linux/ioasid.h | 76 ++++++++ > include/linux/iommu.h | 36 ++++ > include/uapi/linux/iommu.h | 169 ++++++++++++++++++ > 7 files changed, 738 insertions(+) > create mode 100644 drivers/iommu/ioasid.c > create mode 100644 include/linux/ioasid.h
For the whole series, Reviewed-by: Eric Auger <[email protected]> Thanks Eric >
