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Date:	Tue, 14 Nov 2006 19:04:21 +0100
From:	Andreas Mohr <>
To:	Andreas Mohr <>
Cc:	"Pallipadi, Venkatesh" <>,
	Len Brown <>, Ingo Molnar <>,
	Thomas Gleixner <>,,
	"Van De Ven, Arjan" <>
Subject: Re: CONFIG_NO_HZ: missed ticks, stall (keyb IRQ required) [2.6.18-rc4-mm1]

On Tue, Nov 14, 2006 at 06:30:54PM +0100, Andreas Mohr wrote:
> Hmm, hopefully it's easy to research where to enable HPET
> (if there is one at all!) on an el-cheapo VIA chipset...
"The VIA VT8237 chipset also support HPET."

And this is confirmed by:
"However, there is no guarantee that the timer actually has 64 bits, the
specification only recommends it.  My x86-64 system has a 32-bit timer
(AMD64 with a VT8237 southbridge). "

Hmm, and I'm afraid I have a VT8235 only which possibly doesn't have HPET :-P

A relatively detailed (covers Windows XP timer details) HPET etc.
x86 timers discussion is at
"[Comp-arch] x86 High Precision Event Timers support"

Andreas Mohr
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