Geoffrey McRae 4477ac0de1 [idd] clipboard: optimize write-combined reads ...

Add a reusable copy path for moving data from write-combined mappings
into normal cacheable memory. Dispatch to MOVNTDQA-based SSE4.1 or AVX2
loads when the processor and OS support them, with a fenced fallback.

Use the optimized path when staging inbound clipboard stream records from
the IVSHMEM mapping.

2026-08-15 16:09:28 +10:00

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