On 24/05/18 15:41, Jan Beulich wrote:
> In commit d1d6fc97d6 ("x86/xpti: really hide almost all of Xen image")
> I've failed to remember the fact that multiple CPUs share a stub
> mapping page. Therefore it is wrong to unconditionally zap the mapping
> when bringing down a CPU; it may only be unmapped when no other online
> CPU uses that same page.
>
> Reported-by: Simon Gaiser <[email protected]>
> Signed-off-by: Jan Beulich <[email protected]>
Release-acked-by: Juergen Gross <[email protected]>
Juergen
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