The N1 core was designed by Arm Austin. It includes "The traps for EL1 and EL0 cache controls, PSTATE SSBS (Speculative Store Bypass Safe) bit that supports software mitigation for Spectre Variant 4, and the speculation barriers (CSDB, SSBB, PSSBB) instructions..."
It's run by the same lady that made Intel buy McAffee in 2010 for several billion. Years after it was already a dumpster fire. Yeah, I'm staying away from their products.