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When set, starting xe3p_lpg, the L2 flush optimization feature will control whether L2 is in Persistent or Transient mode through monitoring of media activity. To enable L2 flush optimization include new feature flag GUC_CTL_ENABLE_L2FLUSH_OPT for Novalake platforms when media type is detected. Tighten UAPI validation to restrict userptr, svm and dmabuf mappings to be either 2WAY or XA+1WAY V5(Thomas): logic correction V4(MattA): Modify uapi doc and commit V3(MattA): check valid op and pat_index value V2(MattA): validate dma-buf bos and madvise pat-index Acked-by: José Roberto de Souza <jose.souza@intel.com> Acked-by: Michal Mrozek <michal.mrozek@intel.com> Acked-by: Carl Zhang <carl.zhang@intel.com> Reviewed-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Link: https://patch.msgid.link/20260305121902.1892593-9-tejas.upadhyay@intel.com Signed-off-by: Tejas Upadhyay <tejas.upadhyay@intel.com>