Thomas Gleixner wrote:
On Tue, 9 Oct 2007, John Sigler wrote:
Alessio Igor Bogani wrote:
On Tue, 2007-10-09 at 11:06 +0200, John Sigler wrote:
I enabled high resolution timer support and disabled ACPI support.
http://www.mail-archive.com/linux-rt-users@xxxxxxxxxxxxxxx/msg00375.html
There are other clock sources on my system.
The timestamp counter is reliable (as far as I can tell).
See previous mail.
The LAPIC timer is reliable.
LAPIC timer is a clock event device, not a clock source. It can be
used to program the next event, but not to read the time.
(I've just disabled the PM timer.)
Yup, which in turn disables highres.
OK. I have two more questions.
Can the kernel verify the correctness of the TSC with the PIT?
When I enable the ACPI PM timer, the kernel tells me:
* The chipset may have PM-Timer Bug. Due to workarounds for a bug,
* this clock source is slow. If you are sure your timer does not have
* this bug, please use "acpi_pm_good" to disable the workaround
How can I tell whether my PM timer has this bug or not?
(Specific revision? Test app?)
Regards.
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