Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758588AbXIQI5I (ORCPT ); Mon, 17 Sep 2007 04:57:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754904AbXIQIdk (ORCPT ); Mon, 17 Sep 2007 04:33:40 -0400 Received: from il.qumranet.com ([82.166.9.18]:45291 "EHLO il.qumranet.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754540AbXIQIce (ORCPT ); Mon, 17 Sep 2007 04:32:34 -0400 From: Avi Kivity To: kvm-devel@lists.sourceforge.net Cc: linux-kernel@vger.kernel.org, Rusty Russell Subject: [PATCH 086/104] KVM: Hoist SVM's get_cs_db_l_bits into core code. Date: Mon, 17 Sep 2007 10:32:08 +0200 Message-Id: <11900179492582-git-send-email-avi@qumranet.com> X-Mailer: git-send-email 1.5.3 In-Reply-To: <11900179463203-git-send-email-avi@qumranet.com> References: <11900179463203-git-send-email-avi@qumranet.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2837 Lines: 82 From: Rusty Russell SVM gets the DB and L bits for the cs by decoding the segment. This is in fact the completely generic code, so hoist it for kvm-lite to use. Signed-off-by: Rusty Russell Signed-off-by: Avi Kivity --- drivers/kvm/kvm.h | 1 + drivers/kvm/kvm_main.c | 10 ++++++++++ drivers/kvm/svm.c | 10 +--------- 3 files changed, 12 insertions(+), 9 deletions(-) diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h index 9bf9ac6..ee9f8bd 100644 --- a/drivers/kvm/kvm.h +++ b/drivers/kvm/kvm.h @@ -586,6 +586,7 @@ void set_cr4(struct kvm_vcpu *vcpu, unsigned long cr0); void set_cr8(struct kvm_vcpu *vcpu, unsigned long cr0); unsigned long get_cr8(struct kvm_vcpu *vcpu); void lmsw(struct kvm_vcpu *vcpu, unsigned long msw); +void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l); int kvm_get_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 *pdata); int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data); diff --git a/drivers/kvm/kvm_main.c b/drivers/kvm/kvm_main.c index 07a6d97..49a0ff4 100644 --- a/drivers/kvm/kvm_main.c +++ b/drivers/kvm/kvm_main.c @@ -2272,6 +2272,16 @@ static int kvm_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, return 0; } +void kvm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l) +{ + struct kvm_segment cs; + + get_segment(vcpu, &cs, VCPU_SREG_CS); + *db = cs.db; + *l = cs.l; +} +EXPORT_SYMBOL_GPL(kvm_get_cs_db_l_bits); + /* * List of msr numbers which we expose to userspace through KVM_GET_MSRS * and KVM_SET_MSRS, and KVM_GET_MSR_INDEX_LIST. diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c index e51f6b7..35f3f83 100644 --- a/drivers/kvm/svm.c +++ b/drivers/kvm/svm.c @@ -724,14 +724,6 @@ static void svm_get_segment(struct kvm_vcpu *vcpu, var->unusable = !var->present; } -static void svm_get_cs_db_l_bits(struct kvm_vcpu *vcpu, int *db, int *l) -{ - struct vmcb_seg *s = svm_seg(vcpu, VCPU_SREG_CS); - - *db = (s->attrib >> SVM_SELECTOR_DB_SHIFT) & 1; - *l = (s->attrib >> SVM_SELECTOR_L_SHIFT) & 1; -} - static void svm_get_idt(struct kvm_vcpu *vcpu, struct descriptor_table *dt) { struct vcpu_svm *svm = to_svm(vcpu); @@ -1771,7 +1763,7 @@ static struct kvm_arch_ops svm_arch_ops = { .get_segment_base = svm_get_segment_base, .get_segment = svm_get_segment, .set_segment = svm_set_segment, - .get_cs_db_l_bits = svm_get_cs_db_l_bits, + .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, .set_cr3 = svm_set_cr3, -- 1.5.3 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/