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Older HW only supports debugging on a single process because the SPI debug mode setting registers are device global. The HWS has supplied a single pinned VMID (0xf) for MAP_PROCESS for debug purposes. To pin the VMID, the KFD will remove the VMID from the HWS dynamic VMID allocation via SET_RESOUCES so that a debugged process will never migrate away from its pinned VMID. The KFD is responsible for reserving and releasing this pinned VMID accordingly whenever the debugger attaches and detaches respectively. Signed-off-by: Jonathan Kim <jonathan.kim@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.