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[Qemu-devel] [PATCH 2/9] kvm/eventfd: factor out kvm_notify_acked_gsi()
From: |
Denis V. Lunev |
Subject: |
[Qemu-devel] [PATCH 2/9] kvm/eventfd: factor out kvm_notify_acked_gsi() |
Date: |
Fri, 16 Oct 2015 10:07:46 +0300 |
From: Andrey Smetanin <address@hidden>
Factor out kvm_notify_acked_gsi() helper to iterate over EOI listeners
and notify those matching the given gsi.
It will be reused in the upcoming Hyper-V SynIC implementation.
Signed-off-by: Andrey Smetanin <address@hidden>
Reviewed-by: Roman Kagan <address@hidden>
Signed-off-by: Denis V. Lunev <address@hidden>
CC: Vitaly Kuznetsov <address@hidden>
CC: "K. Y. Srinivasan" <address@hidden>
CC: Gleb Natapov <address@hidden>
CC: Paolo Bonzini <address@hidden>
---
include/linux/kvm_host.h | 1 +
virt/kvm/eventfd.c | 16 +++++++++++-----
2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 9596a2f..b66861c 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -829,6 +829,7 @@ int kvm_set_irq_inatomic(struct kvm *kvm, int
irq_source_id, u32 irq, int level)
int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm
*kvm,
int irq_source_id, int level, bool line_status);
bool kvm_irq_has_notifier(struct kvm *kvm, unsigned irqchip, unsigned pin);
+void kvm_notify_acked_gsi(struct kvm *kvm, int gsi);
void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
void kvm_register_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian);
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 518421e..f6b986a 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -451,9 +451,18 @@ bool kvm_irq_has_notifier(struct kvm *kvm, unsigned
irqchip, unsigned pin)
}
EXPORT_SYMBOL_GPL(kvm_irq_has_notifier);
-void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
+void kvm_notify_acked_gsi(struct kvm *kvm, int gsi)
{
struct kvm_irq_ack_notifier *kian;
+
+ hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
+ link)
+ if (kian->gsi == gsi)
+ kian->irq_acked(kian);
+}
+
+void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin)
+{
int gsi, idx;
trace_kvm_ack_irq(irqchip, pin);
@@ -461,10 +470,7 @@ void kvm_notify_acked_irq(struct kvm *kvm, unsigned
irqchip, unsigned pin)
idx = srcu_read_lock(&kvm->irq_srcu);
gsi = kvm_irq_map_chip_pin(kvm, irqchip, pin);
if (gsi != -1)
- hlist_for_each_entry_rcu(kian, &kvm->irq_ack_notifier_list,
- link)
- if (kian->gsi == gsi)
- kian->irq_acked(kian);
+ kvm_notify_acked_gsi(kvm, gsi);
srcu_read_unlock(&kvm->irq_srcu, idx);
}
--
2.1.4
- [Qemu-devel] [PATCH v2 0/9] Hyper-V synthetic interrupt controller, Denis V. Lunev, 2015/10/16
- [Qemu-devel] [PATCH 2/9] kvm/eventfd: factor out kvm_notify_acked_gsi(),
Denis V. Lunev <=
- [Qemu-devel] [PATCH 1/9] kvm/eventfd: avoid loop inside irqfd_update(), Denis V. Lunev, 2015/10/16
- [Qemu-devel] [PATCH 4/9] kvm/irqchip: allow only multiple irqchip routes per GSI, Denis V. Lunev, 2015/10/16
- [Qemu-devel] [PATCH 5/9] kvm/irqchip: kvm_arch_irq_routing_update renaming split, Denis V. Lunev, 2015/10/16
- [Qemu-devel] [PATCH 3/9] kvm/eventfd: add arch-specific set_irq, Denis V. Lunev, 2015/10/16
- [Qemu-devel] [PATCH 6/9] drivers/hv: share Hyper-V SynIC constants with userspace, Denis V. Lunev, 2015/10/16
- [Qemu-devel] [PATCH 7/9] kvm/x86: split ioapic-handled and EOI exit bitmaps, Denis V. Lunev, 2015/10/16
- [Qemu-devel] [PATCH 9/9] kvm/x86: Hyper-V kvm exit, Denis V. Lunev, 2015/10/16