From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753233AbaHTUyJ (ORCPT ); Wed, 20 Aug 2014 16:54:09 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56559 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753185AbaHTUyE (ORCPT ); Wed, 20 Aug 2014 16:54:04 -0400 From: =?UTF-8?q?Radim=20Kr=C4=8Dm=C3=A1=C5=99?= To: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Paolo Bonzini , Gleb Natapov , Raghavendra KT , Vinod Chegu , Hui-Zhi , Christian Borntraeger Subject: [PATCH v2 1/6] KVM: add kvm_arch_sched_in Date: Wed, 20 Aug 2014 22:53:12 +0200 Message-Id: <1408567997-21222-2-git-send-email-rkrcmar@redhat.com> In-Reply-To: <1408567997-21222-1-git-send-email-rkrcmar@redhat.com> References: <1408567997-21222-1-git-send-email-rkrcmar@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introduce preempt notifiers for architecture specific code. Advantage over creating a new notifier in every arch is slightly simpler code and guaranteed call order with respect to kvm_sched_in. Signed-off-by: Radim Krčmář --- arch/arm/kvm/arm.c | 4 ++++ arch/mips/kvm/mips.c | 4 ++++ arch/powerpc/kvm/powerpc.c | 4 ++++ arch/s390/kvm/kvm-s390.c | 4 ++++ arch/x86/kvm/x86.c | 4 ++++ include/linux/kvm_host.h | 2 ++ virt/kvm/kvm_main.c | 2 ++ 7 files changed, 24 insertions(+) diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index a99e0cd..9f788eb 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -288,6 +288,10 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) { } +void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) +{ +} + void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { vcpu->cpu = cpu; diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index cd71141..2362df2 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -1002,6 +1002,10 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) { } +void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) +{ +} + int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu, struct kvm_translation *tr) { diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index 4c79284..cbc432f 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -720,6 +720,10 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) kvmppc_subarch_vcpu_uninit(vcpu); } +void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) +{ +} + void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { #ifdef CONFIG_BOOKE diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index ce81eb2..a3c324e 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -555,6 +555,10 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) /* Nothing todo */ } +void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) +{ +} + void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { save_fp_ctl(&vcpu->arch.host_fpregs.fpc); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 8f1e22d..d7c214f 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -7146,6 +7146,10 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) static_key_slow_dec(&kvm_no_apic_vcpu); } +void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu) +{ +} + int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) { if (type) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index a4c33b3..ebd7236 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -624,6 +624,8 @@ void kvm_arch_exit(void); int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu); void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu); +void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu); + void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu); void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu); void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu); diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 33712fb..d3c3ed0 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -3123,6 +3123,8 @@ static void kvm_sched_in(struct preempt_notifier *pn, int cpu) if (vcpu->preempted) vcpu->preempted = false; + kvm_arch_sched_in(vcpu, cpu); + kvm_arch_vcpu_load(vcpu, cpu); } -- 2.0.4