Re: Meltdown and Spectre

[Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>]

As I understand it, this vulnerability is in the CPU itself - and that's 
below SLIC and PASE - apparently there's a way to intercept traffic 
within the CPU itself - something like that.

Cheers anyhow!
Vern

On 1/5/2018 5:35 PM, Paul Roy wrote:
> I am also very surprised.. I thought IBM i has its own memory management
> ... implemented in the SLIC.. with security bits and tags...
> I am also surprised that we have to wait 5 weeks for the IBM i or AIX
> patch ...  while the patch is available for Linux..
>
> Paul
>
>
>
>
> From:   Charles Wilt <charles.wilt@xxxxxxxxx>
> To:     Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
> Date:   05/01/2018 17:23
> Subject:        Re: Meltdown and Spectre
> Sent by:        "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>
>
>
>
> 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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