Apple, Nvidia, Qualcomm, Marvell, and Cavium all make custom ARM cores and none of them have any info on whether their cores are affected by Spectre/Meltdown and available mitigations. Don't forget about non-Cortex cores!
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It would be cute to use Meltdown to read the MAC keys used to protect the Switch kernel from GPU DMA attacks.
It would, but given the speed at which Switch hacking has been moving recently... I think that won't be necessary.
