fe4c7b1914
The prioritized bit vector manipulation functions are useful in both vmx and svm. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
40 lines
1 KiB
C
40 lines
1 KiB
C
#ifndef ARCH_X86_KVM_X86_H
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#define ARCH_X86_KVM_X86_H
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#include <linux/kvm_host.h>
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static inline void kvm_clear_exception_queue(struct kvm_vcpu *vcpu)
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{
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vcpu->arch.exception.pending = false;
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}
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static inline void kvm_queue_interrupt(struct kvm_vcpu *vcpu, u8 vector)
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{
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vcpu->arch.interrupt.pending = true;
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vcpu->arch.interrupt.nr = vector;
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}
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static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu)
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{
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vcpu->arch.interrupt.pending = false;
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}
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static inline u8 kvm_pop_irq(struct kvm_vcpu *vcpu)
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{
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int word_index = __ffs(vcpu->arch.irq_summary);
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int bit_index = __ffs(vcpu->arch.irq_pending[word_index]);
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int irq = word_index * BITS_PER_LONG + bit_index;
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clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]);
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if (!vcpu->arch.irq_pending[word_index])
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clear_bit(word_index, &vcpu->arch.irq_summary);
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return irq;
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}
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static inline void kvm_push_irq(struct kvm_vcpu *vcpu, u8 irq)
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{
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set_bit(irq, vcpu->arch.irq_pending);
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set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary);
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}
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#endif
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