Re: Meltdown and Spectre

the only ones affected. *Some platforms, such as SPARC and IBM's S390,
are immune to the problem*, as their processor memory management doesn't
need the split address space and shared kernel page tables; operating
systems on those platforms have always isolated their kernel page tables
from user mode ones.

Great article explain in depth what is know at this time.

https://arstechnica.com/gadgets/2018/01/whats-behind-
the-intel-design-flaw-forcing-numerous-patches/?comments=1&start=40


Jim W Grant
Senior VP, Chief Information Officer
Web: www.pdpgroupinc.com




From: "Bryan Dietz" <bdietz400@xxxxxxxxx>
To: midrange-l@xxxxxxxxxxxx
Date: 01/04/2018 09:59 AM
Subject: Re: Meltdown and Spectre
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>



I know should be moved to PCTECH list but the following is interesting.

I was doing some reading about the new flaw and found the following for
Linux changes ( https://lkml.org/lkml/2017/12/4/709 ).


<snip>
2) Namespace

Several people including Linus requested to change the KAISER name.

We came up with a list of technically correct acronyms:

User Address Space Separation, prefix uass_
Forcefully Unmap Complete Kernel With Interrupt Trampolines,
prefix fuckwit_
but we are politically correct people so we settled for
Kernel Page Table Isolation, prefix kpti_

Linus, your call :)
</snip>




Raul Jager wrote on 1/4/2018 9:23 AM:

According to the news, Meltdown is specific to Intel, if so, power will
be safe, but they say that Spectre does affect other microprocessors.
Only x86, or also power?


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