lkml.org 
[lkml]   [1998]   [May]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: Cyrix 6x86MX and Centaur C6 CPUs in 2.1.102
On Mon, 18 May 1998, Vojtech Pavlik wrote:

#*sigh* And this would also mean that my joystick driver will fallback into
#PIT timing mode on a Cyrix, though it could safely use the TSC timer, since
#there isn't a chance of the CPU getting a HLT instruction while it is timing
#the joystick input ...

Thank you SO much Vojtech. I've been trying to remember something that
REALLY relies on the TSC to support my suggestion all day. Now I can reply
to Linus' mail! Yay! }:)

#If I could suggest a solution, add a bug flag for this behaviour, and check
#for presence of TSC and absence of the bug in do_fast_gettimeofday. The TSC
#simply is there, though not suitable for all uses.

Perhaps, perhaps not. There IS a way to address it correctly in ALL
situations, I just don't remember it.

#Also, it'd be neat if the kernel had some public variable containing the
#real TSC increment speed for each CPU, say in ticks per second or
#microsecond, so that drivers using the TSC wouldn't need to calibrate it.

Oooo, that WOULD be *VERY* handy. Instant-sync. I like. :)

-Phil R. Jaenke (kernel@nls.net / prj@nls.net)
TheGuyInCharge(tm), Ketyra Designs - We get paid to break stuff :)
Linux pkrea.ketyra.INT 2.0.33 #15 Sat Apr 18 00:40:21 EDT 1998 i586
Linux eiterra.nls.net 2.0.33 #15 Fri Apr 17 00:22:13 EDT 1998 i586
- Linus says for 'brave people only.' I say 'keep a backup.' - :)


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu

\
 
 \ /
  Last update: 2005-03-22 13:42    [W:0.069 / U:0.392 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site