Messages in this thread | | | Subject | Re: [PATCH v5] x86: call smp vmxoff in smp stop | From | David Hildenbrand <> | Date | Thu, 20 Apr 2017 12:01:33 +0200 |
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On 19.04.2017 18:18, Paolo Bonzini wrote: > From: Tiantian Feng <fengtiantian@huawei.com> > > A CPU in VMX root mode will ignore INIT signals and fail to bring > up the APs after reboot. Therefore, on a panic we disable VMX on all > CPUs before rebooting or triggering kdump. > > Do this when halting the machine as well, in case a firmware-level reboot > does not perform a cold reset for all processors. Without doing this, > rebooting the host may hang.
Guess this make sense, just wonder if something like that is actually expected to work? Not doing a cold reset feels like leaving a lot of stuff in an uninitialized state. Shouldn't that specific firmware then care about performing any necessary resets?
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Thanks,
David
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