61 строка
1.8 KiB
C
61 строка
1.8 KiB
C
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/*
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* irq_comm.c: Common API for in kernel interrupt controller
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* Copyright (c) 2007, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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* Place - Suite 330, Boston, MA 02111-1307 USA.
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* Authors:
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* Yaozu (Eddie) Dong <Eddie.dong@intel.com>
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*
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*/
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#include <linux/kvm_host.h>
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#include "irq.h"
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#include "ioapic.h"
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/* This should be called with the kvm->lock mutex held */
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void kvm_set_irq(struct kvm *kvm, int irq, int level)
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{
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/* Not possible to detect if the guest uses the PIC or the
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* IOAPIC. So set the bit in both. The guest will ignore
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* writes to the unused one.
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*/
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kvm_ioapic_set_irq(kvm->arch.vioapic, irq, level);
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#ifdef CONFIG_X86
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kvm_pic_set_irq(pic_irqchip(kvm), irq, level);
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#endif
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}
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void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi)
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{
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struct kvm_irq_ack_notifier *kian;
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struct hlist_node *n;
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hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link)
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if (kian->gsi == gsi)
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kian->irq_acked(kian);
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}
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void kvm_register_irq_ack_notifier(struct kvm *kvm,
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struct kvm_irq_ack_notifier *kian)
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{
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hlist_add_head(&kian->link, &kvm->arch.irq_ack_notifier_list);
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}
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void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
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struct kvm_irq_ack_notifier *kian)
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{
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hlist_del(&kian->link);
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}
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