Messages in this thread | | | Date | Thu, 9 Apr 2015 11:53:08 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH v8] x86: mce: kexec: switch MCE handler for kexec/kdump |
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On Thu, Apr 09, 2015 at 08:59:44AM +0000, Naoya Horiguchi wrote: > I replied about testing. That might be tricky a little, but I hope it helps.
Yeah, whatever we do, we need this properly tested before upstreaming. That's a given.
> Even if we raise tolerant level in running kdump, that doesn't prevent > idling CPUs from running MCE handlers when MCE arrives, which makes memory > accesses (losing information from kdump's viewpoint) and spits > "MCE synchronization timeout" messages (unclear and confusing for users.)
Why? Those CPUs are offlined and num_online_cpus() in mce_start() should account for that, no?
And if those are offlined, they're very very unlikely to trigger an MCE as they're idle and not executing code.
-- Regards/Gruss, Boris.
ECO tip #101: Trim your mails when you reply. --
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