Re: [Xen-devel] [PATCH 4/5] x86/alternative: Implement NMI/#MC-safe patching

[Juergen Gross <jgross@xxxxxxxx>]

On 30/01/18 20:26, Andrew Cooper wrote:
> However, there is literally nothing we can do to prevent #MC from
> arriving.  We can stop servicing #MC by disabling CR4.MCE, but then the
> processor will shut down.

Hmm, there is a way to avoid #MC on other processors, but this
requires the really big hammer: stop all other cpus and restart
them after patching.


Juergen

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