From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763525AbYDCTkq (ORCPT ); Thu, 3 Apr 2008 15:40:46 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1761164AbYDCTdU (ORCPT ); Thu, 3 Apr 2008 15:33:20 -0400 Received: from bzq-179-150-194.static.bezeqint.net ([212.179.150.194]:39117 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760720AbYDCTdC (ORCPT ); Thu, 3 Apr 2008 15:33:02 -0400 From: Avi Kivity To: kvm-devel@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, Izik Eidus Subject: [PATCH 34/35] KVM: x86: add functions to get the cpl of vcpu Date: Thu, 3 Apr 2008 22:32:49 +0300 Message-Id: <1207251170-5013-35-git-send-email-avi@qumranet.com> X-Mailer: git-send-email 1.5.4.5 In-Reply-To: <1207251170-5013-1-git-send-email-avi@qumranet.com> References: <1207251170-5013-1-git-send-email-avi@qumranet.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Izik Eidus Signed-off-by: Izik Eidus Signed-off-by: Avi Kivity --- arch/x86/kvm/svm.c | 8 ++++++++ arch/x86/kvm/vmx.c | 15 +++++++++++++++ include/asm-x86/kvm_host.h | 1 + 3 files changed, 24 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 51741f9..c1c1b97 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -792,6 +792,13 @@ static void svm_get_segment(struct kvm_vcpu *vcpu, var->unusable = !var->present; } +static int svm_get_cpl(struct kvm_vcpu *vcpu) +{ + struct vmcb_save_area *save = &to_svm(vcpu)->vmcb->save; + + return save->cpl; +} + static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) { struct vcpu_svm *svm = to_svm(vcpu); @@ -1822,6 +1829,7 @@ static struct kvm_x86_ops svm_x86_ops = { .get_segment_base = svm_get_segment_base, .get_segment = svm_get_segment, .set_segment = svm_set_segment, + .get_cpl = svm_get_cpl, .get_cs_db_l_bits = kvm_get_cs_db_l_bits, .decache_cr4_guest_bits = svm_decache_cr4_guest_bits, .set_cr0 = svm_set_cr0, diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 0155931..9b56032 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1395,6 +1395,20 @@ static void vmx_get_segment(struct kvm_vcpu *vcpu, var->unusable = (ar >> 16) & 1; } +static int vmx_get_cpl(struct kvm_vcpu *vcpu) +{ + struct kvm_segment kvm_seg; + + if (!(vcpu->arch.cr0 & X86_CR0_PE)) /* if real mode */ + return 0; + + if (vmx_get_rflags(vcpu) & X86_EFLAGS_VM) /* if virtual 8086 */ + return 3; + + vmx_get_segment(vcpu, &kvm_seg, VCPU_SREG_CS); + return kvm_seg.selector & 3; +} + static u32 vmx_segment_access_rights(struct kvm_segment *var) { u32 ar; @@ -2665,6 +2679,7 @@ static struct kvm_x86_ops vmx_x86_ops = { .get_segment_base = vmx_get_segment_base, .get_segment = vmx_get_segment, .set_segment = vmx_set_segment, + .get_cpl = vmx_get_cpl, .get_cs_db_l_bits = vmx_get_cs_db_l_bits, .decache_cr4_guest_bits = vmx_decache_cr4_guest_bits, .set_cr0 = vmx_set_cr0, diff --git a/include/asm-x86/kvm_host.h b/include/asm-x86/kvm_host.h index 2773f91..06bd154 100644 --- a/include/asm-x86/kvm_host.h +++ b/include/asm-x86/kvm_host.h @@ -387,6 +387,7 @@ struct kvm_x86_ops { u64 (*get_segment_base)(struct kvm_vcpu *vcpu, int seg); void (*get_segment)(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); + int (*get_cpl)(struct kvm_vcpu *vcpu); void (*set_segment)(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg); void (*get_cs_db_l_bits)(struct kvm_vcpu *vcpu, int *db, int *l); -- 1.5.4.5