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Date: Fri, 31 Jul 2015 06:22:05 +0200
From: Borislav Petkov <bp@alien8.de>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Paolo Bonzini <pbonzini@redhat.com>, Peter Zijlstra <peterz@infradead.org>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        Willy Tarreau <w@1wt.eu>, Steven Rostedt <rostedt@goodmis.org>,
        X86 ML <x86@kernel.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>, Brian Gerst <brgerst@gmail.com>
Subject: Re: Dealing with the NMI mess
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On Thu, Jul 30, 2015 at 02:22:06PM -0700, Andy Lutomirski wrote:
> Great.  There's an opcode that invokes an interrupt gate that's not
> marked as allowing unprivileged access, and that opcode doesn't appear
> in the SDM.  It appears in the APM opcode map with no explanation at
> all.
> 
> Thanks, CPU vendors.

Here's something better:

http://www.rcollins.org/secrets/opcodes/ICEBP.html

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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