Re: Make QEmu HPET disabled by default for KVM?

Avi Kivity
2010-03-14T07:05:53Z

On 03/11/2010 09:08 PM, Marcelo Tosatti wrote:
>
>>
>>> I have kept --no-hpet in my setup for
>>> months...
>>>
>> Any details about the problems? HPET is important to some guests.
>>
> As Gleb mentioned in the other thread, reinjection will introduce
> another set of problems.
>
> Ideally all this timer related problems should be fixed by correlating
> timer interrupts and time source reads.
>

This still needs reinjection (or slewing of the timer frequency).
Correlation doesn't fix drift.

> Since one already has to use special timer parameters (-rtc-td-hack,
> -no-kvm-pit-reinjection), using -no-hpet for problematic Linux
> guests seems fine?
>

Depends on how common the problematic ones are. If they're common,
better to have a generic fix.

--
error compiling committee.c: too many arguments to function