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[Why] Avoid conflict with address ranges mapped by SVM mechanism that try to be allocated again through ioctl_alloc in the same process. And viceversa. [How] For ioctl_alloc_memory_of_gpu allocations Check if the address range passed into ioctl memory alloc does not exist already in the kfd_process svms->objects interval tree. For SVM allocations Look for the address range into the interval tree VA from the VM inside of each pdds used in a kfd_process. Signed-off-by: Alex Sierra <alex.sierra@amd.com> Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.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 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.