Re: [PATCH 22/25] x86/mcheck: Do the init in one place

From: Borislav Petkov
Date: Mon Nov 07 2016 - 15:12:33 EST

On Mon, Nov 07, 2016 at 10:55:24AM -0800, Luck, Tony wrote:
> I don't think that helps as much as you'd like it to help (at
> least on Intel). A broadcast machine check that finds the boot
> CPU has set CR4[MCE]=1 is still going to end up in reset if any
> other CPU still has CR4[MCE]=0

By leaving/moving the setting of CR4 earlier on all cores, we'll
at least make the possible window for such potential resets a lot


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