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Linux kernel source tree
38b14e2e3d
Patch series "Invalidate secondary IOMMU TLB on permission upgrade", v4. The main change is to move secondary TLB invalidation mmu notifier callbacks into the architecture specific TLB flushing functions. This makes secondary TLB invalidation mostly match CPU invalidation while still allowing efficient range based invalidations based on the existing TLB batching code. This patch (of 5): The ARM SMMU has a specific command for invalidating the TLB for an entire ASID. Currently this is used for the IO_PGTABLE API but not for ATS when called from the MMU notifier. The current implementation of notifiers does not attempt to invalidate such a large address range, instead walking each VMA and invalidating each range individually during mmap removal. However in future SMMU TLB invalidations are going to be sent as part of the normal flush_tlb_*() kernel calls. To better deal with that add handling to use TLBI ASID when invalidating the entire address space. Link: https://lkml.kernel.org/r/cover.1eca029b8603ef4eebe5b41eae51facfc5920c41.1690292440.git-series.apopple@nvidia.com Link: https://lkml.kernel.org/r/ba5f0ec5fbc2ab188797524d3687e075e2412a2b.1690292440.git-series.apopple@nvidia.com Signed-off-by: Alistair Popple <apopple@nvidia.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Cc: Andrew Donnellan <ajd@linux.ibm.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com> Cc: Frederic Barrat <fbarrat@linux.ibm.com> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Kevin Tian <kevin.tian@intel.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Nicholas Piggin <npiggin@gmail.com> Cc: Nicolin Chen <nicolinc@nvidia.com> Cc: Robin Murphy <robin.murphy@arm.com> Cc: Sean Christopherson <seanjc@google.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com> Cc: Will Deacon <will@kernel.org> Cc: Zhi Wang <zhi.wang.linux@gmail.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: SeongJae Park <sj@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> |
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| kernel | ||
| lib | ||
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| COPYING | ||
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.