Are ARM64 and RISC-V more secure than AMD64? In what way?
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The question was somewhat different: the overall system architecture is carrying luggage which, ultimately, comes from the 1981 PC and has hardly evolved except for layers and layers of "stuff". It is not just the microarchitecture but the overall system which insecure by design.
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Greg meant well. The folks at AMD had to do what they did. The real problem is that x86 is still a thing.
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I think it is a fundamental misunderstanding of the question to imply there was ill-meaning… what they did should have rewarded AMD far more than it actually did - many forget the first microcoded emulation of AMD64 in the Xeon…
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The end users are ultimately who decide. Most of us don't want to throw away or old apps and start over. x86 emulation isn't a good solution yet. Look at what it takes to emulate a 7 or 10 year old console.
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current x86 chips are nothing other than an emulation of x86 running on a RISCy engine via uops decoding of x86.
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The "secure design" concept you are mentioning is not well defined and hiding an expected performance level. Would it be acceptable a secure AMD64 running at 1MHz?
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I said the overall system architecture - most of what makes a current PC is still modelled on the 1981 design, see the boot process or the BIOS.
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From Patterson’s and Hennessy’s “Computer Organization and Design”pic.twitter.com/wDZq5NxMiJ
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