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Re: [PATCH v3] SUPPORT: downgrade Physical CPU Hotplug to Experimental


  • To: Stefano Stabellini <sstabellini@xxxxxxxxxx>
  • From: Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • Date: Thu, 28 Sep 2023 10:32:03 +0200
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  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, andrew.cooper3@xxxxxxxxxx, jbeulich@xxxxxxxx, george.dunlap@xxxxxxxxxx, julien@xxxxxxx, bertrand.marquis@xxxxxxx, wl@xxxxxxx, Stefano Stabellini <stefano.stabellini@xxxxxxx>
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On Wed, Sep 27, 2023 at 04:20:04PM -0700, Stefano Stabellini wrote:
> From: Stefano Stabellini <stefano.stabellini@xxxxxxx>
> 
> The feature is not commonly used, and we don't have hardware to test it,
> not in OSSTest, not in Gitlab, and not even ad-hoc manually by community
> members. We could use QEMU to test it, but even that it is known not to
> work.

I think this last sentence is ambiguous.  QEMU ACPI CPU hotplug
implementation does work AFAIK, it's Xen implementation of ACPI
hotplug that explodes (or so I've been told).  I would drop or reword
the "but even that it is known not to work." part of the sentence.

> 
> Also take the opportunity to rename the feature to "ACPI CPU Hotplug"
> for clarity.
> 
> Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxx>

Acked-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>

Thanks, Roger.



 


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