Re: [Xen-devel] 4.10.1 Xen crash and reboot

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 10.12.18 at 17:44, <andy@xxxxxxxxxxxxxx> wrote:
> Does setting pcid=0 leave me increasingly vulnerable to Meltdown
> and/or negatively impact performance?

I don't think there's any vulnerability concern with disabling use
of PCID. On hardware without the feature we consider ourselves
sufficiently mitigated after all. As to a performance effect, I can't
exclude it, but as with any such question part of the answer is
also "It'll depend on the workload."

Jan



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