lkml.org 
[lkml]   [2019]   [Jun]   [11]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH v4 05/21] x86/hpet: Reserve timer for the HPET hardlockup detector
On Thu, 23 May 2019, Ricardo Neri wrote:

> HPET timer 2 will be used to drive the HPET-based hardlockup detector.
> Reserve such timer to ensure it cannot be used by user space programs or
> for clock events.
>
> When looking for MSI-capable timers for clock events, skip timer 2 if
> the HPET hardlockup detector is selected.

Why? Both the changelog and the code change lack an explanation why this
timer is actually touched after it got reserved for the platform. The
reservation should make it inaccessible for other things.

Thanks,

tglx

\
 
 \ /
  Last update: 2019-06-11 21:55    [W:0.235 / U:1.088 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site