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KVM: Separate irq ack notification out of arch/x86/kvm/irq.c
Moving irq ack notification logic as common, and make it shared with ia64 side. Signed-off-by: Xiantao Zhang <xiantao.zhang@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
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Original file line number | Diff line number | Diff line change |
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/* | ||
* irq_comm.c: Common API for in kernel interrupt controller | ||
* Copyright (c) 2007, Intel Corporation. | ||
* | ||
* This program is free software; you can redistribute it and/or modify it | ||
* under the terms and conditions of the GNU General Public License, | ||
* version 2, as published by the Free Software Foundation. | ||
* | ||
* This program is distributed in the hope it will be useful, but WITHOUT | ||
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | ||
* more details. | ||
* | ||
* You should have received a copy of the GNU General Public License along with | ||
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple | ||
* Place - Suite 330, Boston, MA 02111-1307 USA. | ||
* Authors: | ||
* Yaozu (Eddie) Dong <Eddie.dong@intel.com> | ||
* | ||
*/ | ||
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#include <linux/kvm_host.h> | ||
#include "irq.h" | ||
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#include "ioapic.h" | ||
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/* This should be called with the kvm->lock mutex held */ | ||
void kvm_set_irq(struct kvm *kvm, int irq, int level) | ||
{ | ||
/* Not possible to detect if the guest uses the PIC or the | ||
* IOAPIC. So set the bit in both. The guest will ignore | ||
* writes to the unused one. | ||
*/ | ||
kvm_ioapic_set_irq(kvm->arch.vioapic, irq, level); | ||
#ifdef CONFIG_X86 | ||
kvm_pic_set_irq(pic_irqchip(kvm), irq, level); | ||
#endif | ||
} | ||
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void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi) | ||
{ | ||
struct kvm_irq_ack_notifier *kian; | ||
struct hlist_node *n; | ||
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hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link) | ||
if (kian->gsi == gsi) | ||
kian->irq_acked(kian); | ||
} | ||
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void kvm_register_irq_ack_notifier(struct kvm *kvm, | ||
struct kvm_irq_ack_notifier *kian) | ||
{ | ||
hlist_add_head(&kian->link, &kvm->arch.irq_ack_notifier_list); | ||
} | ||
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void kvm_unregister_irq_ack_notifier(struct kvm *kvm, | ||
struct kvm_irq_ack_notifier *kian) | ||
{ | ||
hlist_del(&kian->link); | ||
} |