On Fri, Jul 15, 2005 at 06:54:30PM +0100, Maciej W. Rozycki wrote: > On Fri, 15 Jul 2005, Venkatesh Pallipadi wrote: > > > I wouldn't say it is totally impossible. There are ways in which Linux can > > work > > without a reliable Local APIC timer. One option being - make one CPU that > > gets > > the external timer interrupt multicast an IPI to all the other CPUs that > > wants to get periodic timer interrupt. > > That's like scratching your left ear with your right hand -- broadcasting > that external timer interrupt in the first place is more straightforward. > If you want to exclude CPUs from the list of receivers, just use the > logical destination mode appropriately. >
Well.. I tried a patch to do the broadcast thing couple of months ago and failed to convince everyone :(. Further, it doesn't work well if you want to exclude some CPUs from the list of recievers. Logical destination is simple only for less than 8 CPUs. Beyond that with clustered or physical configuration it is difficult. Thanks, Venki - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
