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22a2f2e35f
Add error handling for the following VFIO_DEVICE_SET_IRQS cases with respect to the hdr struct: - More than one VFIO_IRQ_DATA_TYPE_MASK flag is set in hdr.flags - More than one VFIO_IRQ_ACTION_TYPE_MASK flag is set in hdr.flags - hdr.count is not specified Note that since hdr.count != 0, data_size != 0 is guaranteed unless vfio_set_irqs_validate_and_prepare fails and returns an error. So, we no longer need to check data_size before running memdup_user because checking the return value of the function is sufficient. v2: Use correct name for mask v3: Use is_power_of_2 over hweight32 as it's more efficient (Andi) Signed-off-by: Jonathan Cavitt <jonathan.cavitt@intel.com> Cc: Andi Shyti <andi.shyti@linux.intel.com> Reviewed-by: Zhenyu Wang <zhenyuw.linux@gmail.com> Reviewed-by: Krzysztof Karas <krzysztof.karas@intel.com> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Signed-off-by: Andi Shyti <andi.shyti@linux.intel.com> Link: https://lore.kernel.org/r/20250923212332.112137-2-jonathan.cavitt@intel.com |
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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 reStructuredText 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.