From: Eric Auger <eric.auger@linaro.org> To: eric.auger@st.com, eric.auger@linaro.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, christoffer.dall@linaro.org, marc.zyngier@arm.com, alex.williamson@redhat.com, pbonzini@redhat.com, avi.kivity@gmail.com, mtosatti@redhat.com, feng.wu@intel.com, joro@8bytes.org, b.reynal@virtualopensystems.com Cc: linux-kernel@vger.kernel.org, patches@linaro.org Subject: [RFC v2 6/6] KVM: eventfd: add irq bypass consumer management Date: Mon, 6 Jul 2015 14:11:32 +0200 [thread overview] Message-ID: <1436184692-20927-7-git-send-email-eric.auger@linaro.org> (raw) In-Reply-To: <1436184692-20927-1-git-send-email-eric.auger@linaro.org> This patch adds the registration/unregistration of an irq_bypass_consumer on irqfd assignment/deassignment. Signed-off-by: Eric Auger <eric.auger@linaro.org> --- v1 -> v2: - populate of kvm and gsi removed - unregister the consumer on irqfd_shutdown --- include/linux/kvm_irqfd.h | 1 + virt/kvm/eventfd.c | 14 +++++++++++--- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/include/linux/kvm_irqfd.h b/include/linux/kvm_irqfd.h index f926b39..3c0bd07 100644 --- a/include/linux/kvm_irqfd.h +++ b/include/linux/kvm_irqfd.h @@ -64,6 +64,7 @@ struct kvm_kernel_irqfd { struct list_head list; poll_table pt; struct work_struct shutdown; + struct irq_bypass_consumer consumer; }; #endif /* __LINUX_KVM_IRQFD_H */ diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c index b79dc61..9452754 100644 --- a/virt/kvm/eventfd.c +++ b/virt/kvm/eventfd.c @@ -35,6 +35,7 @@ #include <linux/srcu.h> #include <linux/slab.h> #include <linux/seqlock.h> +#include <linux/irqbypass.h> #include <trace/events/kvm.h> #include <kvm/iodev.h> @@ -140,6 +141,7 @@ irqfd_shutdown(struct work_struct *work) /* * It is now safe to release the object's resources */ + irq_bypass_unregister_consumer(&irqfd->consumer); eventfd_ctx_put(irqfd->eventfd); kfree(irqfd); } @@ -380,7 +382,14 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args) */ fdput(f); - /* irq_bypass_register_consumer(); */ + irqfd->consumer.token = (void *)irqfd->eventfd; + irqfd->consumer.add_producer = kvm_arch_irq_bypass_add_producer; + irqfd->consumer.del_producer = kvm_arch_irq_bypass_del_producer; + irqfd->consumer.stop = kvm_arch_irq_bypass_stop; + irqfd->consumer.resume = kvm_arch_irq_bypass_resume; + irqfd->consumer.update = kvm_arch_irq_bypass_update; + ret = irq_bypass_register_consumer(&irqfd->consumer); + WARN_ON(ret); return 0; @@ -481,8 +490,6 @@ kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args) struct kvm_kernel_irqfd *irqfd, *tmp; struct eventfd_ctx *eventfd; - /* irq_bypass_unregister_consumer() */ - eventfd = eventfd_ctx_fdget(args->fd); if (IS_ERR(eventfd)) return PTR_ERR(eventfd); @@ -501,6 +508,7 @@ kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args) irqfd->irq_entry.type = 0; write_seqcount_end(&irqfd->irq_entry_sc); irqfd_deactivate(irqfd); + irq_bypass_unregister_consumer(&irqfd->consumer); } } -- 1.9.1
WARNING: multiple messages have this Message-ID (diff)
From: eric.auger@linaro.org (Eric Auger) To: linux-arm-kernel@lists.infradead.org Subject: [RFC v2 6/6] KVM: eventfd: add irq bypass consumer management Date: Mon, 6 Jul 2015 14:11:32 +0200 [thread overview] Message-ID: <1436184692-20927-7-git-send-email-eric.auger@linaro.org> (raw) In-Reply-To: <1436184692-20927-1-git-send-email-eric.auger@linaro.org> This patch adds the registration/unregistration of an irq_bypass_consumer on irqfd assignment/deassignment. Signed-off-by: Eric Auger <eric.auger@linaro.org> --- v1 -> v2: - populate of kvm and gsi removed - unregister the consumer on irqfd_shutdown --- include/linux/kvm_irqfd.h | 1 + virt/kvm/eventfd.c | 14 +++++++++++--- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/include/linux/kvm_irqfd.h b/include/linux/kvm_irqfd.h index f926b39..3c0bd07 100644 --- a/include/linux/kvm_irqfd.h +++ b/include/linux/kvm_irqfd.h @@ -64,6 +64,7 @@ struct kvm_kernel_irqfd { struct list_head list; poll_table pt; struct work_struct shutdown; + struct irq_bypass_consumer consumer; }; #endif /* __LINUX_KVM_IRQFD_H */ diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c index b79dc61..9452754 100644 --- a/virt/kvm/eventfd.c +++ b/virt/kvm/eventfd.c @@ -35,6 +35,7 @@ #include <linux/srcu.h> #include <linux/slab.h> #include <linux/seqlock.h> +#include <linux/irqbypass.h> #include <trace/events/kvm.h> #include <kvm/iodev.h> @@ -140,6 +141,7 @@ irqfd_shutdown(struct work_struct *work) /* * It is now safe to release the object's resources */ + irq_bypass_unregister_consumer(&irqfd->consumer); eventfd_ctx_put(irqfd->eventfd); kfree(irqfd); } @@ -380,7 +382,14 @@ kvm_irqfd_assign(struct kvm *kvm, struct kvm_irqfd *args) */ fdput(f); - /* irq_bypass_register_consumer(); */ + irqfd->consumer.token = (void *)irqfd->eventfd; + irqfd->consumer.add_producer = kvm_arch_irq_bypass_add_producer; + irqfd->consumer.del_producer = kvm_arch_irq_bypass_del_producer; + irqfd->consumer.stop = kvm_arch_irq_bypass_stop; + irqfd->consumer.resume = kvm_arch_irq_bypass_resume; + irqfd->consumer.update = kvm_arch_irq_bypass_update; + ret = irq_bypass_register_consumer(&irqfd->consumer); + WARN_ON(ret); return 0; @@ -481,8 +490,6 @@ kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args) struct kvm_kernel_irqfd *irqfd, *tmp; struct eventfd_ctx *eventfd; - /* irq_bypass_unregister_consumer() */ - eventfd = eventfd_ctx_fdget(args->fd); if (IS_ERR(eventfd)) return PTR_ERR(eventfd); @@ -501,6 +508,7 @@ kvm_irqfd_deassign(struct kvm *kvm, struct kvm_irqfd *args) irqfd->irq_entry.type = 0; write_seqcount_end(&irqfd->irq_entry_sc); irqfd_deactivate(irqfd); + irq_bypass_unregister_consumer(&irqfd->consumer); } } -- 1.9.1
next prev parent reply other threads:[~2015-07-06 12:12 UTC|newest] Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-07-06 12:11 [RFC v2 0/6] IRQ bypass manager and irqfd consumer Eric Auger 2015-07-06 12:11 ` Eric Auger 2015-07-06 12:11 ` [RFC v2 1/6] KVM: arm/arm64: select IRQ_BYPASS_MANAGER Eric Auger 2015-07-06 12:11 ` Eric Auger 2015-07-06 12:24 ` Paolo Bonzini 2015-07-06 12:24 ` Paolo Bonzini 2015-07-06 12:11 ` [RFC v2 2/6] VFIO: platform: " Eric Auger 2015-07-06 12:11 ` Eric Auger 2015-07-06 12:11 ` [RFC v2 3/6] irq: bypass: Extend skeleton for ARM forwarding control Eric Auger 2015-07-06 12:11 ` Eric Auger 2015-07-06 12:27 ` Paolo Bonzini 2015-07-06 12:27 ` Paolo Bonzini 2015-07-06 15:35 ` Eric Auger 2015-07-06 15:35 ` Eric Auger 2015-07-06 15:57 ` Paolo Bonzini 2015-07-06 15:57 ` Paolo Bonzini 2015-07-06 17:09 ` Eric Auger 2015-07-06 17:09 ` Eric Auger 2015-07-06 17:41 ` Paolo Bonzini 2015-07-06 17:41 ` Paolo Bonzini 2015-07-07 7:10 ` Eric Auger 2015-07-07 7:10 ` Eric Auger 2015-07-07 8:58 ` Paolo Bonzini 2015-07-07 8:58 ` Paolo Bonzini 2015-07-07 10:58 ` Wu, Feng 2015-07-07 10:58 ` Wu, Feng 2015-07-07 10:58 ` Wu, Feng 2015-07-07 11:00 ` Paolo Bonzini 2015-07-07 11:00 ` Paolo Bonzini 2015-07-07 11:00 ` Paolo Bonzini 2015-07-07 11:13 ` Wu, Feng 2015-07-07 11:13 ` Wu, Feng 2015-07-07 11:13 ` Wu, Feng 2015-07-07 11:13 ` Paolo Bonzini 2015-07-07 11:13 ` Paolo Bonzini 2015-07-07 11:13 ` Paolo Bonzini 2015-07-07 11:18 ` Wu, Feng 2015-07-07 11:18 ` Wu, Feng 2015-07-07 11:18 ` Wu, Feng 2015-07-07 11:21 ` Paolo Bonzini 2015-07-07 11:21 ` Paolo Bonzini 2015-07-07 11:21 ` Paolo Bonzini 2015-07-07 11:24 ` Wu, Feng 2015-07-07 11:24 ` Wu, Feng 2015-07-07 11:24 ` Wu, Feng 2015-07-07 11:33 ` Wu, Feng 2015-07-07 11:33 ` Wu, Feng 2015-07-07 11:33 ` Wu, Feng 2015-07-07 13:22 ` Paolo Bonzini 2015-07-07 13:22 ` Paolo Bonzini 2015-07-07 13:22 ` Paolo Bonzini 2015-07-06 12:11 ` [RFC v2 4/6] KVM: create kvm_irqfd.h Eric Auger 2015-07-06 12:11 ` Eric Auger 2015-07-06 12:11 ` [RFC v2 5/6] KVM: introduce kvm_arch functions for IRQ bypass Eric Auger 2015-07-06 12:11 ` Eric Auger 2015-07-06 12:11 ` Eric Auger [this message] 2015-07-06 12:11 ` [RFC v2 6/6] KVM: eventfd: add irq bypass consumer management Eric Auger 2015-07-07 8:47 ` Wu, Feng 2015-07-07 8:47 ` Wu, Feng 2015-07-07 8:47 ` Wu, Feng 2015-07-07 9:05 ` Eric Auger 2015-07-07 9:05 ` Eric Auger 2015-07-07 9:05 ` Eric Auger 2015-07-07 9:13 ` Wu, Feng 2015-07-07 9:13 ` Wu, Feng 2015-07-07 9:13 ` Wu, Feng 2015-07-07 17:17 ` [RFC v2 0/6] IRQ bypass manager and irqfd consumer Alex Williamson 2015-07-07 17:17 ` Alex Williamson 2015-07-07 17:17 ` Alex Williamson 2015-07-09 12:28 ` Joerg Roedel 2015-07-09 12:28 ` Joerg Roedel 2015-07-09 14:13 ` Alex Williamson 2015-07-09 14:13 ` Alex Williamson 2015-07-09 14:38 ` Paolo Bonzini 2015-07-09 14:38 ` Paolo Bonzini 2015-07-09 15:34 ` Joerg Roedel 2015-07-09 15:34 ` Joerg Roedel 2015-07-09 15:34 ` Joerg Roedel 2015-07-09 16:06 ` Alex Williamson 2015-07-09 16:06 ` Alex Williamson 2015-07-09 16:06 ` Alex Williamson 2015-07-24 1:27 ` Wu, Feng 2015-07-24 1:27 ` Wu, Feng 2015-07-24 1:27 ` Wu, Feng
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