From: "Petr Vandrovec" <VANDROVE@vc.cvut.cz>
To: Dave Jones <davej@suse.de>
Cc: Nico Schottelius <nicos@pcsystems.de>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
andrew.grover@intel.com
Subject: RE: cpu not detected(x86)
Date: Tue, 7 Aug 2001 22:22:55 MET-1 [thread overview]
Message-ID: <232AAD1EBC@vcnet.vc.cvut.cz> (raw)
On 7 Aug 01 at 22:09, Dave Jones wrote:
>
> "The counter is incremented on every processor clock cycle,
> even when the processor is halted by the HLT instruction or
> the external STPCLK# pin"
But not if clocks are completely stopped, not through STPCLK, but
just stopped.
> "The RDTSC instruction reads the time-stamp counter and is
> _guaranteed_ to return a monotonically increasing unique value
> _whenever_ executed, except for 64-bit wraparound".
This only says that two consecutive RDTSC do not return same value.
Best regards,
Petr Vandrovec
vandrove@vc.cvut.cz
next reply other threads:[~2001-08-07 20:23 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-07 22:22 Petr Vandrovec [this message]
-- strict thread matches above, loose matches on Subject: below --
2001-08-21 20:33 cpu not detected(x86) Grover, Andrew
[not found] <no.id>
2001-08-07 20:03 ` Alan Cox
2001-08-07 19:40 Grover, Andrew
2001-08-07 20:09 ` Dave Jones
2001-08-07 15:09 Nico Schottelius
2001-08-07 15:27 ` Dave Jones
2001-08-07 23:51 ` Luigi Genoni
2001-08-21 20:12 ` Nico Schottelius
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