Re: Meltdown and Spectre

Well that's quite surprising....

I'm no chip head...but I was expecting the POWER/IBMi to be immune given
the protections in place for it's shared address space vs x86/windows
single process VM.

I wonder if it's PASE specific issue...that I could see...

And given the usage of PASE in the OS now (networking, Java, ect) you can't
have IBMi w/o PASE like you used to be able to have OS/400 without PASE.

Charles

On Fri, Jan 5, 2018 at 6:35 AM, Diego Kesselman <diegokesselman@xxxxxxxxx>
wrote:

Have you seen this?!?

https://www.ibm.com/blogs/psirt/potential-impact-processors-power-family/



El 5 ene. 2018 7:31 AM, "Darren Strong" <darren@xxxxxxxxx> escribió:

Last time I read about the subject, POWER processors were in-order
processors. This flaw sounds like its around the speculative processing
used by x86, so I doubt the flaw affects POWER. Its also why there is

talk

of x86 processor performance being affected by a patch. If they disable
this speculative processing, it neuters a significant paradigm used by
these processors.


___________________________________
Darren Strong
Dekko

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