[lkml]   [2000]   [Nov]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectCPU detection revamp (Request for comments)
Hi guys,

I wanted to give you a preview of the CPUID revision patch; it is not
100% ready yet in that (a) it still has a bunch of debugging printk() and
(b) I haven't ported over mtrr.c yet.

This code took a lot longer to write than I had expected, mostly because
I kept running into various forms of bugs with the *old* code. In fact,
it looks like some of the bugs involving CPUID feature flags in the past
have been due to the inconsistent handling of these flags in Linux. I
believe the new code should be a lot better in this aspect, and should
avoid bugs as much as possible.

I would very much like this code to be tested and get success/fail
reports on various CPUs, *especially* AMD (Athlon especially) and Cyrix

As I mentioned, you will have to compile without MTRR support in this
version. I should have that fixed soon.

The patch is at:

In case of success, please send me the output of the new /proc/cpuinfo on
your system. In case of failure, please compile and run the following
program and send me the output, as well as /proc/cpuinfo from an
unpatched kernel version:

Many thanks,


<> at work, <> in private!
"Unix gives you enough rope to shoot yourself in the foot."
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:45    [W:0.047 / U:6.472 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site