Re: [PATCH] config, x86 enable boot cpu hotplug

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On Sun, Jan 19, 2014 at 07:43:06AM -0500, Prarit Bhargava wrote:
> 
> 
> On 01/14/2014 08:40 AM, Josh Boyer wrote:
> > On Tue, Jan 14, 2014 at 7:36 AM, Prarit Bhargava <prarit@xxxxxxxxxx> wrote:
> >> Set CONFIG_BOOTPARAM_HOTPLUG_CPU0 to 'y'.  Currently, to disable CPU0,
> >> the "boot" cpu, one must specify cpu0_hotplug as a kernel parameter.
> >> Setting this config variable to 1 enables it by default.
> >>
> >> I've tested this on systems where it was expected to work and it seems to
> >> function properly.
> > 
> > Looking this over, it simply makes it _possible_ to offline CPU0, but
> > doesn't do it by default, correct?
> > 
> > I've got it queued locally and assuming the answer to my question is
> > what I think it is, I'll push it out soonish.  Thanks.
> > 
> 
> Josh, after some additional testing it looks like we should not do this yet.
> There are some odd bugs that have popped up on older hardware and a few issues
> on new hardware that need to be resolved.
> 
> So ... I think this should be rejected or reverted.

OK.  Have a link to where these problems cropped up?

josh
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