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Date: Fri, 10 Feb 2017 11:14:59 -0500 (EST)
From: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <1847999171.20327674.1486743299204.JavaMail.zimbra@redhat.com>
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References: <589C7E96.9060905@huawei.com> <589D83CE.1090803@huawei.com>
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Subject: Re: [Qemu-devel] kvm bug in __rmap_clear_dirty during live migration
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To: Chris Friesen <chris.friesen@windriver.com>
Cc: "Herongguang (Stephen)" <herongguang.he@huawei.com>, rkrcmar@redhat.com, kvm@vger.kernel.org, qemu-devel@nongnu.org, fangying1@huawei.com, "wangxin (U)" <wangxinxin.wang@huawei.com>

> Well, not so much solved as worked around it.
> 
> It seems that the problem only showed up on Broadwell, which made us wonder
> about something hardware specific.

Yes, the bug seems to be related to PML.  I am looking at the code,
but I haven't found anything yet.

Paolo