Re: Spectre on non-amd64

[Michael <macallan%netbsd.org@localhost>]

Hello,

On Fri, 19 Jan 2018 21:55:12 +0000
<Paul.Koning%dell.com@localhost> wrote:

> > On Jan 19, 2018, at 4:47 PM, <maya%netbsd.org@localhost> <maya%netbsd.org@localhost> wrote:
> > 
> > Hi folks.
> > 
> > I think that the spectre variant 2 situation is a lot worse for:
> > - Speculative CPU
> > - Weak memory protection
> > 
> > Then I don't need a JIT for gadgets.
> > 
> > Architectures that fall into this:
> > - default i386 netbsd, because it is missing NX bit (PAE is optional)
> > - MIPS for us, because we don't use kseg2 and then it doesn't go through
> >  MMU.  
> 
> which MIPS do speculative execution?

R1xk, Loongson ( at least since L2 ), probably quite a few modern ones.

have fun
Michael