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From: Katherine Cox-Buday <cox.katherine.e@gmail.com>
To: Aurora <rind38@disroot.org>
Cc: guix-devel@gnu.org
Subject: Re: Hardened toolchain
Date: Thu, 28 Apr 2022 12:41:07 -0500	[thread overview]
Message-ID: <87fslxds24.fsf@gmail.com> (raw)
In-Reply-To: <87k0b93yaj.fsf@disp3269> (Aurora's message of "Thu, 28 Apr 2022 13:36:36 -0400")

Aurora <rind38@disroot.org> writes:

> Katherine Cox-Buday <cox.katherine.e@gmail.com> writes:
>
>> Everyone has different threat models and needs. A lot of computers
>> have CPU speculative execution attack mitigation disabled because
>> those types of attacks will never affect those computers, and it
>> reduces the performance of the CPU a lot.
>
> There are multicore processors made in the last decade or two that
> aren't affected by speculative execution vulnerabilities?

They are vulnerable to them, but not necessarily affected by them.
Consider a computer not networked to the internet and only running
trusted workloads (e.g. scientific HPC, etc.). This is why acknowledging that everyone has a different threat model is important.

I hope this helps to clarify.

Sincerely,
-- 
Katherine


  reply	other threads:[~2022-04-28 18:03 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-21 13:34 Hardened toolchain zimoun
     [not found] ` <Mymdzxm--3-2@tutanota.com>
2022-03-22 19:06   ` zimoun
2022-03-22 20:02     ` kiasoc5--- via Development of GNU Guix and the GNU System distribution.
2022-03-25 19:39       ` kiasoc5--- via Development of GNU Guix and the GNU System distribution.
2022-03-25 22:54         ` zimoun
2022-03-26 19:33           ` kiasoc5--- via Development of GNU Guix and the GNU System distribution.
2022-03-26 22:02             ` kiasoc5--- via Development of GNU Guix and the GNU System distribution.
2022-03-27 20:06             ` zimoun
2022-03-27 20:22 ` Maxime Devos
2022-03-28  3:17   ` Maxim Cournoyer
2022-03-28  7:35     ` zimoun
2022-03-29  0:02     ` kiasoc5--- via Development of GNU Guix and the GNU System distribution.
2022-03-29 10:15     ` Ludovic Courtès
2022-04-14 18:59       ` kiasoc5--- via Development of GNU Guix and the GNU System distribution.
2022-04-15 15:18       ` jbranso
2022-04-15 16:04         ` Zhu Zihao
2022-04-15 16:34           ` raingloom
2022-04-26 11:07             ` Katherine Cox-Buday
2022-04-28 17:36               ` Aurora
2022-04-28 17:41                 ` Katherine Cox-Buday [this message]
2022-04-28 19:53                   ` Aurora
2022-04-28 17:50                 ` Vagrant Cascadian
2022-04-28 19:54                   ` Aurora
2022-04-29 10:31       ` zimoun
2022-04-29 15:51         ` kiasoc5--- via Development of GNU Guix and the GNU System distribution.
2022-05-02 14:55         ` Katherine Cox-Buday
2022-05-02 16:25         ` Maxime Devos
2022-05-02 17:41           ` zimoun
2022-05-02 21:10             ` Maxime Devos
  -- strict thread matches above, loose matches on Subject: below --
2022-04-15 20:36 Nathan Dehnel
2022-04-16  3:51 ` raingloom
2022-03-21  4:31 kiasoc5--- via Development of GNU Guix and the GNU System distribution.

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