lkml.org 
[lkml]   [2018]   [Mar]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH v3] x86: i8237: Register based on FADT legacy boot flag
From
Date
> Can we probe safely for this device?

99% of the time yes the inb gives us a straight answer. However (and
we've hit this with port 0x81 for real) there are concerns that some
systems will trap those addresses into SMM and do weirdness that makes
the 0xFF check fail.

Alan

\
 
 \ /
  Last update: 2018-03-26 16:56    [W:0.090 / U:54.900 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site