d2f51c50b9
xa_alloc_cyclic() returns 1 on successful allocation, if wrapping occurs, but the code incorrectly treats that as an error. Fix that. Also, xa_alloc_cyclic() requires xa_init_flags(..., XA_FLAGS_ALLOC), so fix that, and assuming we don't want a zero ASID, instead of using XA_FLAGS_ALLOC1, adjust the xa limits at alloc_cyclic time. v2: - On CONFIG_DRM_XE_DEBUG, Initialize the cyclic ASID allocation in such a way that the next allocated ASID will be the maximum one, and the one following will cause an ASID wrap, (all to have CI test high ASIDs and ASID wraps). v3: - Stricter return value checking from xa_alloc_cyclic() (Matthew Auld) Suggested-by: Ohad Sharabi <osharabi@habana.ai> Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/946 Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Ohad Sharabi <osharabi@habana.ai> #v1 Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20231124153345.97385-5-thomas.hellstrom@linux.intel.com Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.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.