From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753065AbcGMRZz (ORCPT ); Wed, 13 Jul 2016 13:25:55 -0400 Received: from www.linutronix.de ([62.245.132.108]:40586 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752486AbcGMRTk (ORCPT ); Wed, 13 Jul 2016 13:19:40 -0400 Message-Id: <20160713153337.900484868@linutronix.de> User-Agent: quilt/0.63-1 Date: Wed, 13 Jul 2016 17:17:02 -0000 From: Anna-Maria Gleixner To: LKML Cc: Peter Zijlstra , Ingo Molnar , Thomas Gleixner , rt@linutronix.de, Anna-Maria Gleixner , Andre Przywara , Christoffer Dall , Eric Auger , Linus Torvalds , Marc Zyngier , Paolo Bonzini , Radim Krcmar , kvm@vger.kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Subject: [patch V2 60/67] KVM/arm/arm64/vgic-new: Convert to hotplug state machine References: <20160713153219.128052238@linutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15 Content-Disposition: inline; filename=0059-KVM-arm-arm64-vgic-new-Convert-to-hotplug-state-mach.patch X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001,URIBL_BLOCKED=0.001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Anna-Maria Gleixner Install the callbacks via the state machine and let the core invoke the callbacks on the already online CPUs. Signed-off-by: Anna-Maria Gleixner Cc: Andre Przywara Cc: Christoffer Dall Cc: Eric Auger Cc: Linus Torvalds Cc: Marc Zyngier Cc: Paolo Bonzini Cc: Peter Zijlstra Cc: Radim Krcmar Cc: Thomas Gleixner Cc: kvm@vger.kernel.org Cc: kvmarm@lists.cs.columbia.edu Cc: linux-arm-kernel@lists.infradead.org --- include/linux/cpuhotplug.h | 1 + virt/kvm/arm/vgic/vgic-init.c | 31 +++++++++---------------------- 2 files changed, 10 insertions(+), 22 deletions(-) diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 078bd22..822df54 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -52,6 +52,7 @@ enum cpuhp_state { CPUHP_AP_QCOM_TIMER_STARTING, CPUHP_AP_MIPS_GIC_TIMER_STARTING, CPUHP_AP_KVM_STARTING, + CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, CPUHP_AP_KVM_ARM_VGIC_STARTING, CPUHP_AP_KVM_ARM_TIMER_STARTING, CPUHP_AP_ARM_XEN_STARTING, diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c index a1442f7..2c7f0d5 100644 --- a/virt/kvm/arm/vgic/vgic-init.c +++ b/virt/kvm/arm/vgic/vgic-init.c @@ -353,32 +353,19 @@ out: /* GENERIC PROBE */ -static void vgic_init_maintenance_interrupt(void *info) +static int vgic_init_cpu_starting(unsigned int cpu) { enable_percpu_irq(kvm_vgic_global_state.maint_irq, 0); + return 0; } -static int vgic_cpu_notify(struct notifier_block *self, - unsigned long action, void *cpu) -{ - switch (action) { - case CPU_STARTING: - case CPU_STARTING_FROZEN: - vgic_init_maintenance_interrupt(NULL); - break; - case CPU_DYING: - case CPU_DYING_FROZEN: - disable_percpu_irq(kvm_vgic_global_state.maint_irq); - break; - } - return NOTIFY_OK; +static int vgic_init_cpu_dying(unsigned int cpu) +{ + disable_percpu_irq(kvm_vgic_global_state.maint_irq); + return 0; } -static struct notifier_block vgic_cpu_nb = { - .notifier_call = vgic_cpu_notify, -}; - static irqreturn_t vgic_maintenance_handler(int irq, void *data) { /* @@ -434,14 +421,14 @@ int kvm_vgic_hyp_init(void) return ret; } - ret = __register_cpu_notifier(&vgic_cpu_nb); + ret = cpuhp_setup_state(CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, + "AP_KVM_ARM_VGIC_INIT_STARTING", + vgic_init_cpu_starting, vgic_init_cpu_dying); if (ret) { kvm_err("Cannot register vgic CPU notifier\n"); goto out_free_irq; } - on_each_cpu(vgic_init_maintenance_interrupt, NULL, 1); - kvm_info("vgic interrupt IRQ%d\n", kvm_vgic_global_state.maint_irq); return 0; -- 2.8.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anna-Maria Gleixner Subject: [patch V2 60/67] KVM/arm/arm64/vgic-new: Convert to hotplug state machine Date: Wed, 13 Jul 2016 17:17:02 -0000 Message-ID: <20160713153337.900484868@linutronix.de> References: <20160713153219.128052238@linutronix.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org, Eric Auger , Peter Zijlstra , Andre Przywara , kvmarm@lists.cs.columbia.edu, Linus Torvalds , rt@linutronix.de, Marc Zyngier , Paolo Bonzini , Thomas Gleixner , Anna-Maria Gleixner , Ingo Molnar To: LKML Return-path: Content-Disposition: inline; filename=0059-KVM-arm-arm64-vgic-new-Convert-to-hotplug-state-mach.patch List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu List-Id: kvm.vger.kernel.org From: Anna-Maria Gleixner Install the callbacks via the state machine and let the core invoke the callbacks on the already online CPUs. Signed-off-by: Anna-Maria Gleixner Cc: Andre Przywara Cc: Christoffer Dall Cc: Eric Auger Cc: Linus Torvalds Cc: Marc Zyngier Cc: Paolo Bonzini Cc: Peter Zijlstra Cc: Radim Krcmar Cc: Thomas Gleixner Cc: kvm@vger.kernel.org Cc: kvmarm@lists.cs.columbia.edu Cc: linux-arm-kernel@lists.infradead.org --- include/linux/cpuhotplug.h | 1 + virt/kvm/arm/vgic/vgic-init.c | 31 +++++++++---------------------- 2 files changed, 10 insertions(+), 22 deletions(-) diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 078bd22..822df54 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -52,6 +52,7 @@ enum cpuhp_state { CPUHP_AP_QCOM_TIMER_STARTING, CPUHP_AP_MIPS_GIC_TIMER_STARTING, CPUHP_AP_KVM_STARTING, + CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, CPUHP_AP_KVM_ARM_VGIC_STARTING, CPUHP_AP_KVM_ARM_TIMER_STARTING, CPUHP_AP_ARM_XEN_STARTING, diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c index a1442f7..2c7f0d5 100644 --- a/virt/kvm/arm/vgic/vgic-init.c +++ b/virt/kvm/arm/vgic/vgic-init.c @@ -353,32 +353,19 @@ out: /* GENERIC PROBE */ -static void vgic_init_maintenance_interrupt(void *info) +static int vgic_init_cpu_starting(unsigned int cpu) { enable_percpu_irq(kvm_vgic_global_state.maint_irq, 0); + return 0; } -static int vgic_cpu_notify(struct notifier_block *self, - unsigned long action, void *cpu) -{ - switch (action) { - case CPU_STARTING: - case CPU_STARTING_FROZEN: - vgic_init_maintenance_interrupt(NULL); - break; - case CPU_DYING: - case CPU_DYING_FROZEN: - disable_percpu_irq(kvm_vgic_global_state.maint_irq); - break; - } - return NOTIFY_OK; +static int vgic_init_cpu_dying(unsigned int cpu) +{ + disable_percpu_irq(kvm_vgic_global_state.maint_irq); + return 0; } -static struct notifier_block vgic_cpu_nb = { - .notifier_call = vgic_cpu_notify, -}; - static irqreturn_t vgic_maintenance_handler(int irq, void *data) { /* @@ -434,14 +421,14 @@ int kvm_vgic_hyp_init(void) return ret; } - ret = __register_cpu_notifier(&vgic_cpu_nb); + ret = cpuhp_setup_state(CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, + "AP_KVM_ARM_VGIC_INIT_STARTING", + vgic_init_cpu_starting, vgic_init_cpu_dying); if (ret) { kvm_err("Cannot register vgic CPU notifier\n"); goto out_free_irq; } - on_each_cpu(vgic_init_maintenance_interrupt, NULL, 1); - kvm_info("vgic interrupt IRQ%d\n", kvm_vgic_global_state.maint_irq); return 0; -- 2.8.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: anna-maria@linutronix.de (Anna-Maria Gleixner) Date: Wed, 13 Jul 2016 17:17:02 -0000 Subject: [patch V2 60/67] KVM/arm/arm64/vgic-new: Convert to hotplug state machine References: <20160713153219.128052238@linutronix.de> Message-ID: <20160713153337.900484868@linutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Anna-Maria Gleixner Install the callbacks via the state machine and let the core invoke the callbacks on the already online CPUs. Signed-off-by: Anna-Maria Gleixner Cc: Andre Przywara Cc: Christoffer Dall Cc: Eric Auger Cc: Linus Torvalds Cc: Marc Zyngier Cc: Paolo Bonzini Cc: Peter Zijlstra Cc: Radim Krcmar Cc: Thomas Gleixner Cc: kvm at vger.kernel.org Cc: kvmarm at lists.cs.columbia.edu Cc: linux-arm-kernel at lists.infradead.org --- include/linux/cpuhotplug.h | 1 + virt/kvm/arm/vgic/vgic-init.c | 31 +++++++++---------------------- 2 files changed, 10 insertions(+), 22 deletions(-) diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h index 078bd22..822df54 100644 --- a/include/linux/cpuhotplug.h +++ b/include/linux/cpuhotplug.h @@ -52,6 +52,7 @@ enum cpuhp_state { CPUHP_AP_QCOM_TIMER_STARTING, CPUHP_AP_MIPS_GIC_TIMER_STARTING, CPUHP_AP_KVM_STARTING, + CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, CPUHP_AP_KVM_ARM_VGIC_STARTING, CPUHP_AP_KVM_ARM_TIMER_STARTING, CPUHP_AP_ARM_XEN_STARTING, diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c index a1442f7..2c7f0d5 100644 --- a/virt/kvm/arm/vgic/vgic-init.c +++ b/virt/kvm/arm/vgic/vgic-init.c @@ -353,32 +353,19 @@ out: /* GENERIC PROBE */ -static void vgic_init_maintenance_interrupt(void *info) +static int vgic_init_cpu_starting(unsigned int cpu) { enable_percpu_irq(kvm_vgic_global_state.maint_irq, 0); + return 0; } -static int vgic_cpu_notify(struct notifier_block *self, - unsigned long action, void *cpu) -{ - switch (action) { - case CPU_STARTING: - case CPU_STARTING_FROZEN: - vgic_init_maintenance_interrupt(NULL); - break; - case CPU_DYING: - case CPU_DYING_FROZEN: - disable_percpu_irq(kvm_vgic_global_state.maint_irq); - break; - } - return NOTIFY_OK; +static int vgic_init_cpu_dying(unsigned int cpu) +{ + disable_percpu_irq(kvm_vgic_global_state.maint_irq); + return 0; } -static struct notifier_block vgic_cpu_nb = { - .notifier_call = vgic_cpu_notify, -}; - static irqreturn_t vgic_maintenance_handler(int irq, void *data) { /* @@ -434,14 +421,14 @@ int kvm_vgic_hyp_init(void) return ret; } - ret = __register_cpu_notifier(&vgic_cpu_nb); + ret = cpuhp_setup_state(CPUHP_AP_KVM_ARM_VGIC_INIT_STARTING, + "AP_KVM_ARM_VGIC_INIT_STARTING", + vgic_init_cpu_starting, vgic_init_cpu_dying); if (ret) { kvm_err("Cannot register vgic CPU notifier\n"); goto out_free_irq; } - on_each_cpu(vgic_init_maintenance_interrupt, NULL, 1); - kvm_info("vgic interrupt IRQ%d\n", kvm_vgic_global_state.maint_irq); return 0; -- 2.8.1