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If the trap is entered due to MODE.DEBUG_EN=1 and SAVECTX is raised concurrently the handler cannot identify the source of the exception. This causes the debugger to lose single step exception notification when a context save request arrives at the same time. When MODE.DEBUG_EN=1 and STATUS.HALT=0 (exception not already handled) jump to the second-level trap handler upon entering the trap. The second-level trap will set STATUS.HALT=1 and return to the shader. If SAVECTX was raised then control flow will return to the trap, which will then handle the context save request. Cc: Tony Tye <tony.tye@amd.com> Cc: Laurent Morichetti <laurent.morichetti@amd.com> Cc: Qingchuan Shi <qingchuan.shi@amd.com> Signed-off-by: Jay Cornwall <jay.cornwall@amd.com> Reviewed-by: Laurent Morichetti <laurent.morichetti@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.