提交 ee739f4b 编写于 作者: M Michael Mueller 提交者: Christian Borntraeger

KVM: s390: abstract conversion between isc and enum irq_types

The abstraction of the conversion between an isc value and an irq_type
by means of functions isc_to_irq_type() and irq_type_to_isc() allows
to clarify the respective operations where used.
Signed-off-by: NMichael Mueller <mimu@linux.vnet.ibm.com>
Reviewed-by: NHalil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: NPierre Morel <pmorel@linux.vnet.ibm.com>
Reviewed-by: NChristian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: NCornelia Huck <cohuck@redhat.com>
Reviewed-by: NDavid Hildenbrand <david@redhat.com>
Signed-off-by: NChristian Borntraeger <borntraeger@de.ibm.com>
上级 f7a6509f
...@@ -213,6 +213,16 @@ static inline unsigned long pending_irqs(struct kvm_vcpu *vcpu) ...@@ -213,6 +213,16 @@ static inline unsigned long pending_irqs(struct kvm_vcpu *vcpu)
vcpu->arch.local_int.pending_irqs; vcpu->arch.local_int.pending_irqs;
} }
static inline int isc_to_irq_type(unsigned long isc)
{
return IRQ_PEND_IO_ISC_0 + isc;
}
static inline int irq_type_to_isc(unsigned long irq_type)
{
return irq_type - IRQ_PEND_IO_ISC_0;
}
static unsigned long disable_iscs(struct kvm_vcpu *vcpu, static unsigned long disable_iscs(struct kvm_vcpu *vcpu,
unsigned long active_mask) unsigned long active_mask)
{ {
...@@ -220,7 +230,7 @@ static unsigned long disable_iscs(struct kvm_vcpu *vcpu, ...@@ -220,7 +230,7 @@ static unsigned long disable_iscs(struct kvm_vcpu *vcpu,
for (i = 0; i <= MAX_ISC; i++) for (i = 0; i <= MAX_ISC; i++)
if (!(vcpu->arch.sie_block->gcr[6] & isc_to_isc_bits(i))) if (!(vcpu->arch.sie_block->gcr[6] & isc_to_isc_bits(i)))
active_mask &= ~(1UL << (IRQ_PEND_IO_ISC_0 + i)); active_mask &= ~(1UL << (isc_to_irq_type(i)));
return active_mask; return active_mask;
} }
...@@ -901,7 +911,7 @@ static int __must_check __deliver_io(struct kvm_vcpu *vcpu, ...@@ -901,7 +911,7 @@ static int __must_check __deliver_io(struct kvm_vcpu *vcpu,
fi = &vcpu->kvm->arch.float_int; fi = &vcpu->kvm->arch.float_int;
spin_lock(&fi->lock); spin_lock(&fi->lock);
isc_list = &fi->lists[irq_type - IRQ_PEND_IO_ISC_0]; isc_list = &fi->lists[irq_type_to_isc(irq_type)];
inti = list_first_entry_or_null(isc_list, inti = list_first_entry_or_null(isc_list,
struct kvm_s390_interrupt_info, struct kvm_s390_interrupt_info,
list); list);
...@@ -1401,7 +1411,7 @@ static struct kvm_s390_interrupt_info *get_io_int(struct kvm *kvm, ...@@ -1401,7 +1411,7 @@ static struct kvm_s390_interrupt_info *get_io_int(struct kvm *kvm,
list_del_init(&iter->list); list_del_init(&iter->list);
fi->counters[FIRQ_CNTR_IO] -= 1; fi->counters[FIRQ_CNTR_IO] -= 1;
if (list_empty(isc_list)) if (list_empty(isc_list))
clear_bit(IRQ_PEND_IO_ISC_0 + isc, &fi->pending_irqs); clear_bit(isc_to_irq_type(isc), &fi->pending_irqs);
spin_unlock(&fi->lock); spin_unlock(&fi->lock);
return iter; return iter;
} }
...@@ -1528,7 +1538,7 @@ static int __inject_io(struct kvm *kvm, struct kvm_s390_interrupt_info *inti) ...@@ -1528,7 +1538,7 @@ static int __inject_io(struct kvm *kvm, struct kvm_s390_interrupt_info *inti)
isc = int_word_to_isc(inti->io.io_int_word); isc = int_word_to_isc(inti->io.io_int_word);
list = &fi->lists[FIRQ_LIST_IO_ISC_0 + isc]; list = &fi->lists[FIRQ_LIST_IO_ISC_0 + isc];
list_add_tail(&inti->list, list); list_add_tail(&inti->list, list);
set_bit(IRQ_PEND_IO_ISC_0 + isc, &fi->pending_irqs); set_bit(isc_to_irq_type(isc), &fi->pending_irqs);
spin_unlock(&fi->lock); spin_unlock(&fi->lock);
return 0; return 0;
} }
......
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