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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>
d2f51c50b9