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| author | Gleb Natapov <gleb@redhat.com> | 2009-03-23 09:23:18 (GMT) |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-06-10 08:48:31 (GMT) |
| commit | fe4c7b1914ac46af751d256f5a20c2e12dcbaaae (patch) | |
| tree | 4533d4a230e64bab951f2b4f7d7147e309a11ee5 /arch/x86/kvm/x86.h | |
| parent | 61c50edfcd40be9126579f9cec68c789b6089998 (diff) | |
| download | linux-fe4c7b1914ac46af751d256f5a20c2e12dcbaaae.tar.xz | |
KVM: reuse (pop|push)_irq from svm.c in vmx.c
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>
Diffstat (limited to 'arch/x86/kvm/x86.h')
| -rw-r--r-- | arch/x86/kvm/x86.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h index 6a4be78..2ab6791 100644 --- a/arch/x86/kvm/x86.h +++ b/arch/x86/kvm/x86.h @@ -19,4 +19,22 @@ static inline void kvm_clear_interrupt_queue(struct kvm_vcpu *vcpu) vcpu->arch.interrupt.pending = false; } +static inline u8 kvm_pop_irq(struct kvm_vcpu *vcpu) +{ + int word_index = __ffs(vcpu->arch.irq_summary); + int bit_index = __ffs(vcpu->arch.irq_pending[word_index]); + int irq = word_index * BITS_PER_LONG + bit_index; + + clear_bit(bit_index, &vcpu->arch.irq_pending[word_index]); + if (!vcpu->arch.irq_pending[word_index]) + clear_bit(word_index, &vcpu->arch.irq_summary); + return irq; +} + +static inline void kvm_push_irq(struct kvm_vcpu *vcpu, u8 irq) +{ + set_bit(irq, vcpu->arch.irq_pending); + set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary); +} + #endif |