lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

KVM: Remove irq_pending bitmap

Browse Source 
Only one interrupt vector can be injected from userspace irqchip at
any given time so no need to store it in a bitmap. Put it into interrupt
queue directly.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov
2009-05-11 13:35:48 +03:00
committed by Avi Kivity
parent fa9726b073
commit 923c61bbc6
4 changed files with 13 additions and 43 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
arch/x86/kvm/x86.h
View File

@ -19,18 +19,6 @@ 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 bool kvm_event_needs_reinjection(struct kvm_vcpu *vcpu)
{
return vcpu->arch.exception.pending || vcpu->arch.interrupt.pending ||