lkml.org 
[lkml]   [2019]   [May]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] cpu/speculation: Warn on unsupported mitigations= parameter

* Jiri Kosina <jikos@kernel.org> wrote:

> On Thu, 16 May 2019, Geert Uytterhoeven wrote:
>
> > Currently, if the user specifies an unsupported mitigation strategy on
> > the kernel command line, it will be ignored silently. The code will
> > fall back to the default strategy, possibly leaving the system more
> > vulnerable than expected.
>
> Honestly, I am not convinced. We are not doing this for vast majority of
> other cmdline options either, if for any at all.

That's really a weakness - I've been bitten by this previously: I typoed
or mis-remembered a command line option and didn't have it while I
thought I had it.

Our boot-commandline library is pretty user-unfriendly.

Thanks,

Ingo

\
 
 \ /
  Last update: 2019-05-16 10:16    [W:0.050 / U:0.228 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site