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Re: [PATCH v7 4/6] arm/sysctl: Implement cpu hotplug ops
- To: Mykyta Poturai <Mykyta_Poturai@xxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 9 Apr 2026 17:34:15 +0200
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Timothy Pearson <tpearson@xxxxxxxxxxxxxxxxxxxxx>, Alistair Francis <alistair.francis@xxxxxxx>, Connor Davis <connojdavis@xxxxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, "Daniel P. Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Thu, 09 Apr 2026 15:34:27 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 09.04.2026 16:34, Mykyta Poturai wrote:
> On 3/30/26 15:28, Jan Beulich wrote:
>> On 30.03.2026 13:59, Mykyta Poturai wrote:
>>> --- a/xen/common/Kconfig
>>> +++ b/xen/common/Kconfig
>>> @@ -638,9 +638,9 @@ config SYSTEM_SUSPEND
>>> If unsure, say N.
>>>
>>> config CPU_HOTPLUG
>>> - bool "CPU online/offline support"
>>> - depends on X86
>>> - default y
>>> + bool "CPU online/offline support" if EXPERT || X86
>>
>> Why not just EXPERT?
>
> Should it be marked as EXPERT on x86? I considered that if the option
> was non configurable (always enabled), it should stay enabled by default
> and always visible.
As you say, it wasn't configurable before. Imo that's a good sign that, at
least for starters, we should limit its disabling to experts.
Jan
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