lkml.org 
[lkml]   [2019]   [Nov]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v10 6/6] x86/split_lock: Enable split lock detection by kernel parameter
On Wed, Nov 20, 2019 at 04:53:23PM -0800, Fenghua Yu wrote:
> Split lock detection is disabled by default. Enable the feature by
> kernel parameter "split_lock_detect".
>
> Usually it is enabled in real time when expensive split lock issues
> cannot be tolerated so should be fatal errors, or for debugging and
> fixing the split lock issues to improve performance.
>
> Please note: enabling this feature will cause kernel panic or SIGBUS
> to user application when a split lock issue is detected.

ARGGGHH, by having this default disabled, firmware will _NEVER_ be
exposed to this before it ships.

How will you guarantee the firmware will not explode the moment you
enable this?

\
 
 \ /
  Last update: 2019-11-21 09:01    [W:0.340 / U:0.696 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site