From mboxrd@z Thu Jan  1 00:00:00 1970
From: Borislav Petkov <bp-Gina5bIWoIWzQB+pC5nmwQ@public.gmane.org>
Subject: Re: EFI mixed mode + perf = rampant triple faults
Date: Wed, 14 Jan 2015 19:35:46 +0100
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To: Andy Lutomirski <luto-kltTT9wpgjJwATOyAt5JVQ@public.gmane.org>
Cc: Matt Fleming <matt-HNK1S37rvNbeXh+fF434Mdi2O/JbrIOy@public.gmane.org>, LKML <linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" <linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>, "H. Peter Anvin" <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>, Thomas Gleixner <tglx-hfZtesqFncYOwBW4kG4KsQ@public.gmane.org>, Ingo Molnar <mingo-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>, Peter Zijlstra <peterz-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org>
List-Id: linux-efi@vger.kernel.org

On Wed, Jan 14, 2015 at 10:27:47AM -0800, Andy Lutomirski wrote:
> How are you manually triggering an MCE?  I've been playing with some
> MCE stuff recently, but the only reasonably reliable way I know of to
> trigger an MCE is using WHEA, and I don't have a box with WHEA, and I
> assume your ASUS T100 doesn't either.

asm volatile("int $18");

> Tianocore makes assumptions about the kernel's GDT layout?  Yuck.

Yuck indeed.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
--