[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] Re: Question on virtual HPET's behavior
My reading of the (really bad) specification doc is that in periodic mode writes to the comparator register change the period only, unless VAL_SET_CNF is set in which case only the comparator counter value is set. The Linux HPET code agrees with this interpretation — it writes to the comparator register twice. Do you have an example of an OS that assumes different HPET behaviour? -- Keir On 26/12/07 12:37, "Shan, Haitao" <haitao.shan@xxxxxxxxx> wrote: Here hpet.period is updated only when timer 0 is in periodic mode and SET_VAL is not set. But from HPET spec 1.0a, I can not find the reason. The spec provides a recommended sequence to reset main counter and comparator. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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