Re: [edk2] KVM: MTRR: fix memory type handling if MTRR is completely disabled

From: Laszlo Ersek <lersek@redhat.com>
To: Janusz <januszmk6@gmail.com>, kvm@vger.kernel.org
Cc: edk2-devel@ml01.01.org, guangrong.xiao@linux.intel.com
Subject: Re: [edk2] KVM: MTRR: fix memory type handling if MTRR is completely disabled
Date: Fri, 18 Sep 2015 12:07:04 +0200	[thread overview]
Message-ID: <55FBE248.4010809@redhat.com> (raw)
In-Reply-To: <55FBDB6D.4040207@gmail.com>

On 09/18/15 11:37, Janusz wrote:
> Hello,
> 
> I am writting about this patch that was posted by Xiao:
> http://www.spinics.net/lists/kvm/msg119044.html and this:
> http://www.spinics.net/lists/kvm/msg119045.html
> I've tested both kernel 4.2 and 4.3 and problem still exists when I use
> OVMF - 100% cpu usage, VM resetting, while it works properly on kernel 4.1

My last (still current) request remains "please quirk it". See the end
of <http://thread.gmane.org/gmane.linux.kernel/1952205/focus=1996025>,
and other messages in that subthread.

I haven't been following kernel development, so maybe the quirk has not
happened. No clue.

... "VM resetting" looks something different though; I've been under the
impression that the pedantic (=unquirked) MTRR configuration didn't
impact other things than speed. Janusz, maybe you could contribute with
a host kernel bisection for the VM reset symptom.

Thanks
Laszlo

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