Re: cpu hotplug

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On Sat, 2010-09-18 at 10:32 -0400, Kevin O'Connor wrote:
> On Fri, Sep 17, 2010 at 11:39:36PM +0200, Conrad Wood wrote:
> > Hi everyone,
> > 
> > I'm currently looking into hotplugging CPUs. 
> > This exclusively with linux-guests and linux-host.
> > I have found some (conflicting) information about this on the net.
> > 
> > As far as I read:
> > * seabios doesn't support SMP (but why does the linux-guest show
> > multiple cpus?)
> > * there is no uniform way of informing the linux kernel that a cpu has
> > added (Found references to a unisys way of doing it though, which seems
> > to be still implemented)
> > * the kernel needs the acpi tables to determine how many cpus it has,
> > thus the support in the bios would involve an aml-compiler to
> > hot-compile new acpi tables.
> 
> SeaBIOS version 0.6.1 has ACPI support for cpu-hotplug.  It's been
> tested on Linux and Windows.  Search the mail archive for "cpu
> hotplug" for the details.
> 
> -Kevin
> 

Now... that would save some time ;)
Thank you! 

Conrad


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