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| author | Anna-Maria Gleixner <anna-maria@linutronix.de> | 2016-07-13 17:17:02 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-15 10:41:43 +0200 |
| commit | 15d7e3d349a329ad48a29c3a818eacd1c3f7e3ef (patch) | |
| tree | e2b291209ac06fd750a893882f846c809ab944a7 /virt/kvm | |
| parent | 31487f8328f20fdb302430b020a5d6e8446c1971 (diff) | |
| download | linux-15d7e3d349a329ad48a29c3a818eacd1c3f7e3ef.tar.bz2 | |
KVM/arm/arm64/vgic-new: Convert to hotplug state machine
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 <anna-maria@linutronix.de>
Cc: Andre Przywara <andre.przywara@arm.com>
Cc: Christoffer Dall <christoffer.dall@linaro.org>
Cc: Eric Auger <eric.auger@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Radim Krcmar <rkrcmar@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kvm@vger.kernel.org
Cc: kvmarm@lists.cs.columbia.edu
Cc: linux-arm-kernel@lists.infradead.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153337.900484868@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'virt/kvm')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-init.c | 31 |
1 files changed, 9 insertions, 22 deletions
diff --git a/virt/kvm/arm/vgic/vgic-init.c b/virt/kvm/arm/vgic/vgic-init.c index a1442f7c9c4d..2c7f0d5a62ea 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; |