OT: Evidence of A Intel Virtual Memory Vulnerability

Uknown sireeshkodali1 at gmail.com
Thu Jan 4 01:35:11 UTC 2018


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


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