On Thursday, 4 January 2018 at 00:55:45 UTC, Jack Stouffer wrote:
On Wednesday, 3 January 2018 at 15:51:35 UTC, Jack Stouffer
wrote:
The gist of the story is that an Intel vulnerability is
requiring OS vendors to institute Page Table Isolation in
their kernels. This fix has an _across the board_ 5-7%
slowdown on Intel chips.
Worse yet, programs which do lots of syscalls will see around
a 30% slowdown or more, including compilation.
AMD is not effected.
Details and discussion:
Reddit:
https://www.reddit.com/r/sysadmin/comments/7nl8r0/intel_bug_incoming/
HN: https://news.ycombinator.com/item?id=16046636
Attack details published by Google Project Zero with official
names https://meltdownattack.com
https://www.phoronix.com/scan.php?page=news_item&px=x86-PTI-EPYC-Linux-4.15-Test
The linux kernel is not trusting even AMD chips. Supposedly even
ARM is affected
