lkml.org 
[lkml]   [2000]   [Nov]   [10]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Fwd: CPU detection revamp (Request for comments)]
davej@suse.de wrote:
>
> Hi hpa,
>
> First test, the AMD K6-2.
>
> Also, look at the feature flags:
> before:
> flags : fpu vme de pse tsc msr mce cx8 sep mtrr pge mmx 3dnow
>
> after:
> features : fpu vme de pse tsc msr mce cx8 pge mmx syscall 3dnow
>
> Note, I lost MTRR & sep. This may be related to the stepping bug
> though. I'll recompile a kernel with the &15 fix, and see if that cures
> all.

The K6's don't support sysenter/sysexit. It really should have been
marked differently before. The early K6's used extended bit 10 to
indicate syscall/sysret capabality, but this version has some quirks
that make it pretty much unusable. Later K6's use extended bit 11 to
indicate syscall/sysret.

--

Brian Gerst
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 12:45    [W:1.977 / U:0.000 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site