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186b169cf1
Fixing the ODP registration flow to set the iova correctly. The calculation in ib_umem_num_dma_blocks() function assumes the iova of the umem is set correctly. When iova is not set, the calculation in ib_umem_num_dma_blocks() is equivalent to length/page_size, which is true only when memory is aligned. For unaligned memory, iova must be set for the ALIGN() in the ib_umem_num_dma_blocks() to take effect and return a correct value. mlx5_ib uses ib_umem_num_dma_blocks() to decide the mkey size to use for the MR. Without this fix, when registering unaligned ODP MR, a wrong size mkey might be chosen and this might cause the UMR to fail. UMR would fail over insufficient size to update the mkey translation: infiniband mlx5_0: dump_cqe:273:(pid 0): dump error cqe 00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00000020: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00000030: 00 00 00 00 0f 00 78 06 25 00 00 58 00 da ac d2 infiniband mlx5_0: mlx5_ib_post_send_wait:806:(pid 20311): reg umr failed (6) infiniband mlx5_0: pagefault_real_mr:661:(pid 20311): Failed to update mkey page tables Fixes: |
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| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.