From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gleb Natapov <gleb@redhat.com>
Subject: Re: commit f8f559422b (KVM: MMU: fast invalidate all mmio sptes)
 causes hang
Date: Wed, 17 Jul 2013 22:31:00 +0300
Message-ID: <20130717193100.GM13732@redhat.com>
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 <20130717164232.GI13732@redhat.com>
 <20130717165743.GA357@x4>
 <B438F263-D5D5-4755-AAAA-ED92F4F0379E@gmail.com>
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Cc: Markus Trippelsdorf <markus@trippelsdorf.de>, kvm@vger.kernel.org,
	Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>,
	Marcelo Tosatti <mtosatti@redhat.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	linux-kernel@vger.kernel.org
To: Xiao Guangrong <xiaoguangrong.eric@gmail.com>
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On Thu, Jul 18, 2013 at 03:07:11AM +0800, Xiao Guangrong wrote:
> Ouch!
>=20
> The guest is hang when boot from ubuntu iso, i bisected the code and =
found it is caused by:
>=20
> cad55f1aed000db46dfd1b5706707f33624d8604 is the first bad commit
> commit cad55f1aed000db46dfd1b5706707f33624d8604
> Author: Cornelia Huck <cornelia.huck@de.ibm.com>
> Date:   Wed Jul 3 16:30:53 2013 +0200
>=20
>     KVM: kvm-io: support cookies
>    =20
>     Add new functions kvm_io_bus_{read,write}_cookie() that allows us=
ers of
>     the kvm io infrastructure to use a cookie value to speed up looku=
p of a
>     device on an io bus.
>    =20
>     Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
>     Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
>=20
> Now, i have reset the code behind this commit and continue to install=
 the guest=85...
>=20
You are on an old queue branch (the commit was never in next). I fixed =
it not long time ago. Can you
pull?

--
			Gleb.