From patchwork Tue Feb 16 10:35:13 2010 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Avi Kivity X-Patchwork-Id: 79629 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o1GAglf6020706 for ; Tue, 16 Feb 2010 10:42:48 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932800Ab0BPKmB (ORCPT ); Tue, 16 Feb 2010 05:42:01 -0500 Received: from mx1.redhat.com ([209.132.183.28]:40347 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932796Ab0BPKfk (ORCPT ); Tue, 16 Feb 2010 05:35:40 -0500 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o1GAZdki002878 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 16 Feb 2010 05:35:40 -0500 Received: from cleopatra.tlv.redhat.com (cleopatra.tlv.redhat.com [10.35.255.11]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o1GAZc56003436; Tue, 16 Feb 2010 05:35:39 -0500 Received: from localhost.localdomain (file.tlv.redhat.com [10.35.255.8]) by cleopatra.tlv.redhat.com (Postfix) with ESMTP id DDF21250ADE; Tue, 16 Feb 2010 12:35:36 +0200 (IST) From: Avi Kivity To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH 15/38] KVM: Activate fpu on clts Date: Tue, 16 Feb 2010 12:35:13 +0200 Message-Id: <1266316536-28936-16-git-send-email-avi@redhat.com> In-Reply-To: <1266316536-28936-1-git-send-email-avi@redhat.com> References: <1266316536-28936-1-git-send-email-avi@redhat.com> X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.3 (demeter.kernel.org [140.211.167.41]); Tue, 16 Feb 2010 10:42:48 +0000 (UTC) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index d73ed48..7ebf9fe 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -511,6 +511,7 @@ struct kvm_x86_ops { void (*cache_reg)(struct kvm_vcpu *vcpu, enum kvm_reg reg); unsigned long (*get_rflags)(struct kvm_vcpu *vcpu); void (*set_rflags)(struct kvm_vcpu *vcpu, unsigned long rflags); + void (*fpu_activate)(struct kvm_vcpu *vcpu); void (*fpu_deactivate)(struct kvm_vcpu *vcpu); void (*tlb_flush)(struct kvm_vcpu *vcpu); diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index a281368..800208a 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -1259,12 +1259,17 @@ static int ud_interception(struct vcpu_svm *svm) return 1; } -static int nm_interception(struct vcpu_svm *svm) +static void svm_fpu_activate(struct kvm_vcpu *vcpu) { + struct vcpu_svm *svm = to_svm(vcpu); svm->vmcb->control.intercept_exceptions &= ~(1 << NM_VECTOR); svm->vcpu.fpu_active = 1; update_cr0_intercept(svm); +} +static int nm_interception(struct vcpu_svm *svm) +{ + svm_fpu_activate(&svm->vcpu); return 1; } @@ -2977,6 +2982,7 @@ static struct kvm_x86_ops svm_x86_ops = { .cache_reg = svm_cache_reg, .get_rflags = svm_get_rflags, .set_rflags = svm_set_rflags, + .fpu_activate = svm_fpu_activate, .fpu_deactivate = svm_fpu_deactivate, .tlb_flush = svm_flush_tlb, diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index b7e812e..fad871c 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -3002,6 +3002,7 @@ static int handle_cr(struct kvm_vcpu *vcpu) vmx_set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~X86_CR0_TS)); trace_kvm_cr_write(0, kvm_read_cr0(vcpu)); skip_emulated_instruction(vcpu); + vmx_fpu_activate(vcpu); return 1; case 1: /*mov from cr*/ switch (cr) { diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index c61ec9c..4db0c8a 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3269,6 +3269,7 @@ int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address) int emulate_clts(struct kvm_vcpu *vcpu) { kvm_x86_ops->set_cr0(vcpu, kvm_read_cr0_bits(vcpu, ~X86_CR0_TS)); + kvm_x86_ops->fpu_activate(vcpu); return X86EMUL_CONTINUE; }