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KVM: Separate irq ack notification out of arch/x86/kvm/irq.c

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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>
This commit is contained in:
Xiantao Zhang 2008-10-06 13:48:45 +08:00 committed by Avi Kivity
parent c77fb9dc7a
commit 3de42dc094
9 changed files with 74 additions and 48 deletions
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4
arch/ia64/include/asm/kvm_host.h
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@ -413,6 +413,10 @@ struct kvm_arch {
struct kvm_ioapic *vioapic;
struct kvm_vm_stat stat;
struct kvm_sal_data rdv_sal_data;
struct list_head assigned_dev_head;
struct dmar_domain *intel_iommu_domain;
struct hlist_head irq_ack_notifier_list;
};
union cpuid3_t {

2
arch/ia64/kvm/Makefile
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@ -44,7 +44,7 @@ EXTRA_CFLAGS += -Ivirt/kvm -Iarch/ia64/kvm/
EXTRA_AFLAGS += -Ivirt/kvm -Iarch/ia64/kvm/
common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
coalesced_mmio.o)
coalesced_mmio.o irq_comm.o)
kvm-objs := $(common-objs) kvm-ia64.o kvm_fw.o
obj-$(CONFIG_KVM) += kvm.o

5
arch/ia64/kvm/irq.h
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@ -23,10 +23,5 @@
#ifndef __IRQ_H
#define __IRQ_H
struct kvm;
static inline void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi)
{
}
#endif

2
arch/x86/kvm/Makefile
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@ -3,7 +3,7 @@
#
common-objs = $(addprefix ../../../virt/kvm/, kvm_main.o ioapic.o \
coalesced_mmio.o)
coalesced_mmio.o irq_comm.o)
ifeq ($(CONFIG_KVM_TRACE),y)
common-objs += $(addprefix ../../../virt/kvm/, kvm_trace.o)
endif

33
arch/x86/kvm/irq.c
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@ -99,36 +99,3 @@ void __kvm_migrate_timers(struct kvm_vcpu *vcpu)
__kvm_migrate_apic_timer(vcpu);
__kvm_migrate_pit_timer(vcpu);
}
/* 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);
kvm_pic_set_irq(pic_irqchip(kvm), irq, level);
}
void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi)
{
struct kvm_irq_ack_notifier *kian;
struct hlist_node *n;
hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link)
if (kian->gsi == gsi)
kian->irq_acked(kian);
}
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);
}
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian)
{
hlist_del(&kian->link);
}

8
arch/x86/kvm/irq.h
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@ -68,7 +68,6 @@ struct kvm_pic {
};
struct kvm_pic *kvm_create_pic(struct kvm *kvm);
void kvm_pic_set_irq(void *opaque, int irq, int level);
int kvm_pic_read_irq(struct kvm *kvm);
void kvm_pic_update_irq(struct kvm_pic *s);
void kvm_pic_clear_isr_ack(struct kvm *kvm);
@ -85,13 +84,6 @@ static inline int irqchip_in_kernel(struct kvm *kvm)
void kvm_pic_reset(struct kvm_kpic_state *s);
void kvm_set_irq(struct kvm *kvm, int irq, int level);
void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi);
void kvm_register_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian);
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian);
void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec);
void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu);
void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu);

2
include/asm-x86/kvm_host.h
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@ -565,6 +565,8 @@ void kvm_queue_exception_e(struct kvm_vcpu *vcpu, unsigned nr, u32 error_code);
void kvm_inject_page_fault(struct kvm_vcpu *vcpu, unsigned long cr2,
u32 error_code);
void kvm_pic_set_irq(void *opaque, int irq, int level);
void kvm_inject_nmi(struct kvm_vcpu *vcpu);
void fx_init(struct kvm_vcpu *vcpu);

6
include/linux/kvm_host.h
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@ -309,6 +309,12 @@ struct kvm_assigned_dev_kernel {
struct pci_dev *dev;
struct kvm *kvm;
};
void kvm_set_irq(struct kvm *kvm, int irq, int level);
void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi);
void kvm_register_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian);
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian);
#ifdef CONFIG_DMAR
int kvm_iommu_map_pages(struct kvm *kvm, gfn_t base_gfn,

60
virt/kvm/irq_comm.c Normal file
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@ -0,0 +1,60 @@
/*
* 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>
*
*/
#include <linux/kvm_host.h>
#include "irq.h"
#include "ioapic.h"
/* 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
}
void kvm_notify_acked_irq(struct kvm *kvm, unsigned gsi)
{
struct kvm_irq_ack_notifier *kian;
struct hlist_node *n;
hlist_for_each_entry(kian, n, &kvm->arch.irq_ack_notifier_list, link)
if (kian->gsi == gsi)
kian->irq_acked(kian);
}
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);
}
void kvm_unregister_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian)
{
hlist_del(&kian->link);
}