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KVM: ioapic: merge ioapic_deliver into ioapic_service

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Commonize the handling of masking, which was absent for kvm_ioapic_set_irq.
Setting remote_irr does not need a separate function either, and merging
the two functions avoids confusion.

Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2014-03-18 11:51:29 +01:00
parent 36c9549460
commit 0b10a1c87a
1 changed files with 9 additions and 20 deletions
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29
virt/kvm/ioapic.c
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@ -50,7 +50,7 @@
#else
#define ioapic_debug(fmt, arg...)
#endif
static int ioapic_deliver(struct kvm_ioapic *vioapic, int irq,
static int ioapic_service(struct kvm_ioapic *vioapic, int irq,
bool line_status);
static unsigned long ioapic_read_indirect(struct kvm_ioapic *ioapic,
@ -163,23 +163,6 @@ static bool rtc_irq_check_coalesced(struct kvm_ioapic *ioapic)
return false;
}
static int ioapic_service(struct kvm_ioapic *ioapic, unsigned int idx,
bool line_status)
{
union kvm_ioapic_redirect_entry *pent;
int injected = -1;
pent = &ioapic->redirtbl[idx];
if (!pent->fields.mask) {
injected = ioapic_deliver(ioapic, idx, line_status);
if (injected && pent->fields.trig_mode == IOAPIC_LEVEL_TRIG)
pent->fields.remote_irr = 1;
}
return injected;
}
static void update_handled_vectors(struct kvm_ioapic *ioapic)
{
DECLARE_BITMAP(handled_vectors, 256);
@ -282,12 +265,15 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
}
}
static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq, bool line_status)
static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
{
union kvm_ioapic_redirect_entry *entry = &ioapic->redirtbl[irq];
struct kvm_lapic_irq irqe;
int ret;
if (entry->fields.mask)
return -1;
ioapic_debug("dest=%x dest_mode=%x delivery_mode=%x "
"vector=%x trig_mode=%x\n",
entry->fields.dest_id, entry->fields.dest_mode,
@ -310,6 +296,9 @@ static int ioapic_deliver(struct kvm_ioapic *ioapic, int irq, bool line_status)
} else
ret = kvm_irq_delivery_to_apic(ioapic->kvm, NULL, &irqe, NULL);
if (ret && irqe.trig_mode == IOAPIC_LEVEL_TRIG)
entry->fields.remote_irr = 1;
return ret;
}
@ -393,7 +382,7 @@ static void __kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu,
ASSERT(ent->fields.trig_mode == IOAPIC_LEVEL_TRIG);
ent->fields.remote_irr = 0;
if (!ent->fields.mask && (ioapic->irr & (1 << i)))
if (ioapic->irr & (1 << i))
ioapic_service(ioapic, i, false);
}
}