From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH v4] KVM: vmx: fix ept reserved bits for 1-GByte page
Date: Wed, 20 Aug 2014 10:13:07 +0200
Message-ID: <53F45893.6050305@redhat.com>
References: <1408519913-8943-1-git-send-email-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: Wanpeng Li <wanpeng.li@linux.intel.com>
Return-path: <linux-kernel-owner@vger.kernel.org>
In-Reply-To: <1408519913-8943-1-git-send-email-wanpeng.li@linux.intel.com>
Sender: linux-kernel-owner@vger.kernel.org
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Il 20/08/2014 09:31, Wanpeng Li ha scritto:
> EPT misconfig handler in kvm will check which reason lead to EPT
> misconfiguration after vmexit. One of the reasons is that an EPT
> paging-structure entry is configured with settings reserved for
> future functionality. However, the handler can't identify if
> paging-structure entry of reserved bits for 1-GByte page are
> configured, since PDPTE which point to 1-GByte page will reserve
> bits 29:12 instead of bits 7:3 which are reserved for PDPTE that
> references an EPT Page Directory. This patch fix it by reserve
> bits 29:12 for 1-GByte page.

Thanks, the patch looks good.

Can you describe how you detected the problem and how you're testing for it?

Paolo