On 28/08/2020 21:53, Pancho wrote:
> On 28/08/2020 20:19, Dennis Lee Bieber wrote:
>>     If ARM is considered RISC, it is still pipelined:
>>
https://www.nccgroup.com/us/about-us/newsroom-and-events/blog/2011/september/ar
m-pipeline-and-gdb-oh-my/ 
>>
>>
https://en.wikipedia.org/wiki/ARM_architecture#Pipelines_and_other_implementati
on_issues 
>>
>>
>>
> ARM is pipelined, I think all chips are now.

Even the ARM2 was pipelined, you'll probably have to go back to the 8 
bit ear such as the 6502, to find one which wasn't.

Pipelining isn't the problem though, its the vastly more complex aspects
of modern processors such as branch prediction, speculative execution 
and caching which are targetted by these exploits.

No protected information is directly leaked by the bugs, but 
manipulations of these features can allow protected information to be 
deduced from timing differences of cached or uncached memory accesses.

---druck

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