Re: [PATCH] x86: Plug racy xAPIC access of CPU hotplug code

[Jan Kiszka]

On 2014-01-28 22:17, Andi Kleen wrote:
> Also with irq-off you of course still always have races against
> the NMI-level machine check.

The self-IPI triggered over NMI won't touch the high-part of the ICR and
will properly wait for ICR to become free again. So we are safe.

Jan

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Siemens AG, Corporate Technology, CT RTC ITP SES-DE
Corporate Competence Center Embedded Linux
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