On Tue, 09 Jun 2009 21:42:55 +0300 Avi Kivity <avi@xxxxxxxxxx> wrote: > Stephen Hemminger wrote: > > > > >> This only affects reboots. But yes, the cpumask code has bugs. Does > >> the .config involved select MAXSMP? > >> > >> > > > > Patch does not fix the problem. Not sure if it is KVM only problem. > > Look like possible cpumask always equals what ACPI / SMP tables report. > > So currently looking into alloc_percpu which may not handle the possible > > but never used cpus. > > > > > > Right, it shouldn't have. > > > It is x86-64 config and does not have MAXSMP set. It does have NR_CPUS set. > > > > So it's not cpumask. Dare I suggest a bisect? > I did some testing of different versions. * Problem does not exist with 2.6.30-rc8 (so regression should be closed). * Problem does exist with 2.6.29.4 * Happens with both nosmp and maxcpus=1 Given that it is fixed in 2.6.30, at this point there really is no urgency to spend more time investigating the issue. There are certainly bigger problems to deal with. -- -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
