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It can reduce the > demands on DRAM bandwidth and reduces latency to the processor consuming > the I/O data. This copy&pasted text found in cover letter and patch 1 and now here seems to be the type of annoying repetitive text that Boris referred to [1]. Looking at this changelog again it may also be confusing to start with introduction of one feature (SDCI), but end with another SDCIAE. Here is a changelog that attempts to address issues, please feel free to improve: AMD's SDCIAE (SDCI Allocation Enforcement) PQE feature enables system software to control the portions of L3 cache used for direct insertion of data from I/O devices into the L3 cache. Introduce a generic resctrl cache resource property "io_alloc_capable" as the first part of the new "io_alloc" resctrl feature that will support AMD's SDCIAE. Any architecture can set a cache resource as "io_alloc_capable" if a portion of the cache can be allocated for I/O traffic. Set the "io_alloc_capable" property for the L3 cache resource on x86 (AMD) systems that support SDCIAE. > Introduce cache resource property "io_alloc_capable" that an architecture > can set if a portion of the cache can be allocated for I/O traffic. > > Set this property on x86 systems that support SDCIAE (L3 Smart Data Cache > Injection Allocation Enforcement). This property is set only for the L3 > cache resource on systems that support SDCIAE. > > Signed-off-by: Babu Moger > Reviewed-by: Reinette Chatre > --- Reinette [1] https://lore.kernel.org/lkml/20250911150850.GAaMLmAoi5fTIznQzY@fat_crate.local/