linux-kernel - Re: commit 3c2e7f7de3 (KVM use NPT page attributes) causes boot failures

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Date:	Tue, 1 Sep 2015 15:56:36 +0200
From:	Markus Trippelsdorf <markus@...ppelsdorf.de>
To:	Xiao Guangrong <guangrong.xiao@...ux.intel.com>
Cc:	Ingo Molnar <mingo@...nel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mike Galbraith <efault@....de>, Joerg Roedel <jroedel@...e.de>,
	Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org
Subject: Re: commit 3c2e7f7de3 (KVM use NPT page attributes) causes boot
 failures

On 2015.09.01 at 21:00 +0800, Xiao Guangrong wrote:
> 
> Did it trigger the BUG()/BUG_ON() in mtrr2protval()/fallback_mtrr_type()?
> If yes, could you please print the actual value out?

It is the BUG() in fallback_mtrr_type(). I changed it to a printk and
it prints 1 for the value of mtrr.

 MTRR_TYPE_WRCOMB     1

-- 
Markus
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