From mboxrd@z Thu Jan  1 00:00:00 1970
From: Wanpeng Li <wanpeng.li@linux.intel.com>
Subject: Re: [PATCH v6 2/2] KVM: nVMX: nested TPR shadow/threshold emulation
Date: Fri, 22 Aug 2014 16:44:07 +0800
Message-ID: <20140822084407.GA6610@kernel>
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Reply-To: Wanpeng Li <wanpeng.li@linux.intel.com>
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Cc: Marcelo Tosatti <mtosatti@redhat.com>,
	Gleb Natapov <gleb@kernel.org>,
	Zhang Yang <yang.z.zhang@intel.com>, kvm@vger.kernel.org,
	linux-kernel@vger.kernel.org
To: Paolo Bonzini <pbonzini@redhat.com>
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On Fri, Aug 22, 2014 at 10:36:07AM +0200, Paolo Bonzini wrote:
>Il 22/08/2014 01:30, Wanpeng Li ha scritto:
>> Maybe I misunderstand your comments "On real hardware you could poin=
t
>> the virtual-APIC page to an invalid address."
>> http://lists.openwall.net/linux-kernel/2014/08/07/344
>>=20
>
>That referred to an address that doesn't correspond to RAM.  You can u=
se
>addresses like these in a real processor.
>
>But the manual says that "if the =E2=80=9Cuse TPR shadow=E2=80=9D VM-e=
xecution control
>is 1, VM entry ensures that the virtual-APIC address is 4-KByte aligne=
d"
>(24.6.8 Controls For APIC Virtualization).  This is the check that is
>missing.

Ok, thanks.

Regards,
Wanpeng Li=20
>
>Paolo