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   1 #ifndef ARCH_X86_KVM_X86_H
   2 #define ARCH_X86_KVM_X86_H
   3
   4 #include <linux/kvm_host.h>
   5
   6 static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)
   7 {
   8         vcpu->arch.exception.pending = false;
   9 }
  10
  11 static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector)
  12 {
  13         vcpu->arch.interrupt.pending = true;
  14         vcpu->arch.interrupt.nr = vector;
  15 }
  16
  17 static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
  18 {
  19         vcpu->arch.interrupt.pending = false;
  20 }
  21
  22 static inline u8 kvm_pop_irq(struct kvm_vcpu *vcpu)
  23 {
  24         int word_index = __ffs(vcpu->arch.irq_summary);
  25         int bit_index = __ffs(vcpu->arch.irq_pending[word_index]);
  26         int irq = word_index * BITS_PER_LONG + bit_index;
  27
  28         clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]);
  29         if (!vcpu->arch.irq_pending[word_index])
  30                 clear_bit(word_index, &vcpu->arch.irq_summary);
  31         return irq;
  32 }
  33
  34 static inline void kvm_push_irq(struct kvm_vcpu *vcpu, u8 irq)
  35 {
  36         set_bit(irq, vcpu->arch.irq_pending);
  37         set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary);
  38 }
  39
  40 #endif