From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753198Ab2DTI5G (ORCPT ); Fri, 20 Apr 2012 04:57:06 -0400 Received: from e28smtp04.in.ibm.com ([122.248.162.4]:44784 "EHLO e28smtp04.in.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751040Ab2DTI5D (ORCPT ); Fri, 20 Apr 2012 04:57:03 -0400 Message-ID: <4F911BCE.8030507@linux.vnet.ibm.com> Date: Fri, 20 Apr 2012 16:18:22 +0800 From: Xiao Guangrong User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0.1) Gecko/20120216 Thunderbird/10.0.1 MIME-Version: 1.0 To: Xiao Guangrong CC: Avi Kivity , Marcelo Tosatti , LKML , KVM Subject: [PATCH v3 3/9] KVM: VMX: export PFEC.P bit on ept References: <4F911B74.4040305@linux.vnet.ibm.com> In-Reply-To: <4F911B74.4040305@linux.vnet.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit x-cbid: 12042008-5564-0000-0000-00000247E41A Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Export the present bit of page fault error code, the later patch will use it Signed-off-by: Xiao Guangrong --- arch/x86/kvm/vmx.c | 9 ++++++++- 1 files changed, 8 insertions(+), 1 deletions(-) diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 52f6856..2c98057 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -4735,6 +4735,7 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu) { unsigned long exit_qualification; gpa_t gpa; + u32 error_code; int gla_validity; exit_qualification = vmcs_readl(EXIT_QUALIFICATION); @@ -4759,7 +4760,13 @@ static int handle_ept_violation(struct kvm_vcpu *vcpu) gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); trace_kvm_page_fault(gpa, exit_qualification); - return kvm_mmu_page_fault(vcpu, gpa, exit_qualification & 0x3, NULL, 0); + + /* It is a write fault? */ + error_code = exit_qualification & (1U << 1); + /* ept page table is present? */ + error_code |= (exit_qualification >> 3) & 0x1; + + return kvm_mmu_page_fault(vcpu, gpa, error_code, NULL, 0); } static u64 ept_rsvd_mask(u64 spte, int level) -- 1.7.7.6