Comment by saagarjha
5 months ago
Apple has implemented synchronous MTE with almost neutral overhead and also mitigated Spectre v1 using a novel technique that I haven't heard of before (which, alas, they don't really go into detail here); what's more, they plan to ship this to (hundreds of) millions of devices. I think these are significant improvements of the state of the art.
> also mitigated Spectre v1 using a novel technique that I haven't heard of before
Unsure about iOS, but back then, Webkit published their initial mitigations (like: Index masking, Pointer poisoning): https://webkit.org/blog/8048/what-spectre-and-meltdown-mean-...
Yeah, this is what they came up with in the wake of those being released. They have a performance impact though.