Took some serious effort though. 200+ seconds.
Security Researchers Detail New "BlindSide" Speculative Execution Attack
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Originally posted by starshipeleven View PostAre ARM immune or did they just not test them? Because they do speculative execution too
Cortex-A53 (2012) and newer A55 (2017) uses in order execution pipelines. The A53 is used in Raspberry Pi 3 (and 3+).
Cortex-A72 and newer versions (all the way to A77) uses a "out-of-order, speculative issue 3-way superscalar execution pipeline". The A72 is used in Raspberry Pi 4.
Hopefully the Raspberry Pi Foundation learns it's from this. ARM at least announces vulnerabilities while Raspberry Pi Foundation just ignores it. This is the ONLY post made by them and not updated after the release of the Raspberry Pi 4... "Why Raspberry Pi isn’t vulnerable to Spectre or Meltdown" -- https://www.raspberrypi.org/blog/why...e-or-meltdown/
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Originally posted by Vistaus View PostAn attack that works on an AMD CPU? Is this fake news or what? 'Cause everyone, esp. on this site, keeps saying AMD is 100% safe against this kind of stuff...
Next time you hear someone talking about 100% secure software or hardware, just tell them they don't understand shit.
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Originally posted by xfcemint View PostAlso, speculation is safe if done just on registers and a few buffers close to the ALU. The problem with current CPUs is that manufacturers are relentlessly and dangerously speculating on every shit they can think of to get out that last 1% performance. Than the CPU looks good on benchmarks when it is released.
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Originally posted by xfcemint View PostI wonder how many more years before the CPU manufacturers realize that they can offer a user-controlled option to disable speculation (a so-called "chicken bit") and carve out a niche marked there of customers who value additional security.Last edited by ed31337; 11 September 2020, 08:21 PM.
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Originally posted by CochainComplex View Postso where are the non speculative CPU's? is it still possible or will this push us back to pre-P4 era (performancewise)?
On the other hand, with the performance impact of mitigating those flaws we'd be better off with an overclocked 486 + modern extensions.
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Originally posted by elatllat View PostSo The Odroid C4 running RedoxOS would be the most secure, performant option. Amazon/Apple/Microsoft all have custom ARM chips and more money than everyone else, it would be nice if they stepped in and fixed this mess. (Intel and AMD can't be botherd apparently)
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