Stuff like this is why hppa and itanic are explicitly excluded from @musllibc's future arch targets. https://twitter.com/kittenpies3/status/879024041809633283 …
Designing new hardware features to provide needed safety/security properties/mitigations is a complete non-starter.
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If for no other reason than the state of the patent system. Any attempt to do so is just a grab for monopolization.
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Viable hardening or privilege models need to be equally implementable everywhere, not limited to one vendor's machines.
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at the time, the cost of everyone jumping to a new arch seemed too steep for what one could get from it (DOS wasn't even fully dead yet...)
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Yes, that's a huge problem in itself. I was probably wrong to jump just on wacky hardening features at hw level...
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...when Itanic also overlapped somewhat into the domain of "wacky new computation model" stuff.
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yeah, would need fancy/new compiler magic to make it work well; and for the older software which worked (Win32 only), it takes a perf hit...
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likewise, the rise of ARM is more because of mobile, vs competing directly with x86 on PCs, and binary-only fixed-media SW distrib is dying.
End of conversation
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