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SubjectRe: [PATCH -v2 5/5] x86: use dmi check to treat disabled cpus as hotplug cpus.
On 01/12/2010 03:56 PM, Suresh Siddha wrote:
> On Tue, 2010-01-12 at 15:17 -0800, Yinghai Lu wrote:
>> some systems that have disable cpus entries because same
>> BIOS will support 2 sockets and 4 sockets and more at
>> same time, BIOS just leave some disable entries, but
>> those system do not support cpu hotplug. we don't need
>> treat disabled_cpus as hotplug cpus.
>> so we can make nr_cpu_ids smaller and save more space
>> (pcpu data allocations), and could make some systems run
>> with logical flat instead of physical flat apic mode
>> -v2: change to black list instead
> I don't think this list will work because every HT system with HT
> disabled in the bios shows that logical cpu as disabled.

so you want to treat those disabled cpus in the those system as hotplug cpus or not?


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