Original release notes
kleidiai: Add SME vs SME2 distinction in kernel dispatch (#25478)
The current integration treats SME as a single capability (CPU_FEATURE_SME) with no distinction between SME(v1) and SME2. The kernels dispatched under CPU_FEATURE_SME use SME2-specific instructions, making dispatch incorrect on SME(v1)-only hardware.
We introduce build-time and runtime distinction between SME and SME2, and wire SME(v1) and SME2 kernels based on actual hardware support.
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