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Date:	Thu, 10 Jul 2014 11:27:00 -0700
From:	Tony Luck <>
To:	Havard Skinnemoen <>
Cc:	Borislav Petkov <>,
	"" <>,
	Ewout van Bekkum <>
Subject: Re: [PATCH 3/6] x86-mce: Clear CMCI enable on all claimed CMCI banks
 before reboot.

On Thu, Jul 10, 2014 at 10:56 AM, Havard Skinnemoen
<> wrote:
> Even on kexec-enabled kernels, we might be doing a regular BIOS boot.
> Is there any way to detect that we're doing a kexec boot and only
> clearing the MSRs in that case?

I'm not sure if we should worry about that ... not having the code bloat
for the functions is kexec is not configured is a good goal. Worrying
about a few extra microseconds in the shutdown path if kexec is configured
but we are actually doing a normal shutdown/reboot doesn't seem as
big of a worry.

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