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When a BO is created, qaic will use the page allocator to request the memory chunks that the BO will be composed of in-memory. The number of chunks increases when memory is segmented. For example, a 16MB BO can be composed of four 4MB chunks or 4096 4KB chunks. A BO is then sliced into a single or multiple slices to be transferred to the device on the DBC's xfer queue. For that to happen, the slice needs to encode its memory chunks into DBC requests and keep track of them in an array, which is allocated using kcalloc(). Knowing that the BO might be very fragmented, this array can grow so large that the allocation may fail to find contiguous memory for it. Replace kcalloc() with kvcalloc() to allocate the DBC requests array for a slice. Signed-off-by: Youssef Samir <quic_yabdulra@quicinc.com> Signed-off-by: Youssef Samir <youssef.abdulrahman@oss.qualcomm.com> Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Reviewed-by: Carl Vanderlip <carl.vanderlip@oss.qualcomm.com> Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com> Link: https://lore.kernel.org/r/20251007121845.337382-1-youssef.abdulrahman@oss.qualcomm.com
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.