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RTC usage bails out cleanly if accessing it goes wrong (e.g. HPET without generic RTC emulation)

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Richard Curnow
2005-07-19 21:22:52 +00:00
committed by Richard P. Curnow
parent 13ace061fa
commit 77da5b6144
3 changed files with 24 additions and 2 deletions
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chrony.texi
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@@ -836,7 +836,11 @@ compiled into the kernel). An estimate is made of the RTC error at a
particular RTC second, and the rate at which the RTC gains or loses time
relative to true time.
The RTC is fully supported in 2.2 and 2.4 kernels.
The RTC is fully supported in 2.2, 2.4 and 2.6 kernels.
On 2.6 kernels, if your motherboard has a HPET, you need to enable the
@samp{HPET_EMULATE_RTC} option in your kernel configuration. Otherwise, chrony
will not be able to interact with the RTC device and will give up using it.
For kernels in the 2.0 series prior to 2.0.32, the kernel was set up to
trim the RTC every 11 minutes. This would be disasterous for