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[Qemu-devel] Re: [kvm-devel] [PATCH] Add support for HPET periodic timer

From: Avi Kivity
Subject: [Qemu-devel] Re: [kvm-devel] [PATCH] Add support for HPET periodic timer.
Date: Mon, 13 Aug 2007 11:04:46 +0300
User-agent: Thunderbird (X11/20070419)

Luca Tettamanti wrote:
Linux operates the HPET timer in legacy replacement mode, which means that the
periodic interrupt of the CMOS RTC is not delivered (qemu won't be able to use
/dev/rtc). Add support for HPET (/dev/hpet) as a replacement for the RTC; the
periodic interrupt is delivered via SIGIO and is handled in the same way as the
RTC timer.
HPET must be explicitly enabled with -use-hpet.

Are there any downsides to using HPET? If not, I suggest making it the default, in order to reduce complexity for the user.

Something like:

- try to use HPET (unless -no-rtc selected)
- try to use RTC  (unless -no-rtc selected)
- fallback to normal unix facilities

error compiling committee.c: too many arguments to function

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