On Mon, May 02, 2016 at 02:33:21PM +0200, Igor Mammedov wrote: > on old machine types CPU hotplug was uncondtionally > enabled since it was introduced, consuming IO ports > and providing AML regardles of whether it was actually > in use or not. Keep it so for 2.6 and older machines. > > New machine types will have an option to turn CPU > hotplug on if it's needed while by default it stays > disabled not consuming extra RAM/IO resources. > > Signed-off-by: Igor Mammedov <imamm...@redhat.com>
What if people are using "-machine pc -smp N,max_cpus=M"? Shouldn't we at least warning about missing CPU hotplug support when using just "max_cpus" with no "cpu-hotplug=on" with pc-2.7 and newer? Should max_cpus > smp_cpus automatically set cpu-hotplug=on? -- Eduardo
