I tested this on my T-bird athlon 800, and this is the result: Testing PAUSE instruction: Register esp changed: 0xbfbffb38 -> 0xbfbffafc
So I guess there's no problem. Ken On Fri, 24 May 2002, John Baldwin wrote: > Hey gang, although Intel's document seems to claim that they tested > proper operation of pause I'd like people with non-Intel processors > to verify that it actually works. Please compile the attached test > program and run it. The output should look like this: > > > ./pt > Testing PAUSE instruction: > Register esp changed: 0xbfbff9fc -> 0xbfbff9c0 > > If you get a signal or any of the other registers change their value, > please let me know. I've tested this on a Pentium III mobile, a K6-II, > and an Athlon. The program cmopiles ok on both stable and current. > > -----FW: <[EMAIL PROTECTED]>----- > > Date: Tue, 21 May 2002 15:26:36 -0700 (PDT) > Sender: [EMAIL PROTECTED] > From: John Baldwin <[EMAIL PROTECTED]> > To: [EMAIL PROTECTED], [EMAIL PROTECTED] > Subject: cvs commit: src/sys/kern kern_mutex.c > > jhb 2002/05/21 15:26:36 PDT > > Modified files: > sys/kern kern_mutex.c > Log: > Add appropriate IA32 "pause" instructions to improve performanec on > Pentium 4's and newer IA32 processors. The "pause" instruction has been > verified by Intel to be a NOP on all currently existing IA32 processors > prior to the Pentium 4. > > Revision Changes Path > 1.95 +17 -1 src/sys/kern/kern_mutex.c > > --------------End of forwarded message------------------------- > > -- > > John Baldwin <[EMAIL PROTECTED]> <>< http://www.FreeBSD.org/~jhb/ > "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
