Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [patch 00/53] x86/topology: The final installment | Date | Tue, 08 Aug 2023 20:55:52 +0200 |
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On Tue, Aug 08 2023 at 12:20, Andrew Cooper wrote: > On 08/08/2023 8:40 am, Juergen Gross wrote: >> Tested on an Intel system with Xen: >> >> - PV dom0 is working fine. I couldn't test physical cpu hotplug, but >> removing >> and then re-adding vcpus to dom0 worked. > > It turns out that physical CPU hotplug with XenPV is broken in at least > two ways. > > It's dom0 (not Xen) that gets the hot-unplug event, after which the Xen > code in Linux succumbs to a preempt-check failure while trying to > offline the vCPU that aliases the pCPU wanting to go offline.
That should be gone by now :)
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