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KVM: reuse (pop|push)_irq from svm.c in vmx.c

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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>
This commit is contained in:
Gleb Natapov 2009-03-23 11:23:18 +02:00 committed by Avi Kivity
parent 61c50edfcd
commit fe4c7b1914
3 changed files with 24 additions and 36 deletions
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25
arch/x86/kvm/svm.c
View file

@ -19,6 +19,7 @@
#include "irq.h"
#include "mmu.h"
#include "kvm_cache_regs.h"
#include "x86.h"
#include <linux/module.h>
#include <linux/kernel.h>
@ -132,24 +133,6 @@ static inline u32 svm_has(u32 feat)
return svm_features & feat;
}
static inline u8 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 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);
}
static inline void clgi(void)
{
asm volatile (__ex(SVM_CLGI));
@ -1116,7 +1099,7 @@ static int pf_interception(struct vcpu_svm *svm, struct kvm_run *kvm_run)
if (!irqchip_in_kernel(kvm) &&
is_external_interrupt(exit_int_info)) {
event_injection = true;
push_irq(&svm->vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK);
kvm_push_irq(&svm->vcpu, exit_int_info & SVM_EVTINJ_VEC_MASK);
}
fault_address = svm->vmcb->control.exit_info_2;
@ -2336,7 +2319,7 @@ static void kvm_reput_irq(struct vcpu_svm *svm)
if ((control->int_ctl & V_IRQ_MASK)
&& !irqchip_in_kernel(svm->vcpu.kvm)) {
control->int_ctl &= ~V_IRQ_MASK;
push_irq(&svm->vcpu, control->int_vector);
kvm_push_irq(&svm->vcpu, control->int_vector);
}
svm->vcpu.arch.interrupt_window_open =
@ -2346,7 +2329,7 @@ static void kvm_reput_irq(struct vcpu_svm *svm)
static void svm_do_inject_vector(struct vcpu_svm *svm)
{
svm_inject_irq(svm, pop_irq(&svm->vcpu));
svm_inject_irq(svm, kvm_pop_irq(&svm->vcpu));
}
static void do_interrupt_requests(struct kvm_vcpu *vcpu,

17
arch/x86/kvm/vmx.c
View file

@ -2489,18 +2489,6 @@ static void vmx_update_window_states(struct kvm_vcpu *vcpu)
GUEST_INTR_STATE_MOV_SS)));
}
static void kvm_do_inject_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);
kvm_queue_interrupt(vcpu, irq);
}
static void do_interrupt_requests(struct kvm_vcpu *vcpu,
struct kvm_run *kvm_run)
{
@ -2534,7 +2522,7 @@ static void do_interrupt_requests(struct kvm_vcpu *vcpu,
if (vcpu->arch.interrupt_window_open) {
if (vcpu->arch.irq_summary && !vcpu->arch.interrupt.pending)
kvm_do_inject_irq(vcpu);
kvm_queue_interrupt(vcpu, kvm_pop_irq(vcpu));
if (vcpu->arch.interrupt.pending)
vmx_inject_irq(vcpu, vcpu->arch.interrupt.nr);
@ -2619,8 +2607,7 @@ static int handle_exception(struct kvm_vcpu *vcpu, struct kvm_run *kvm_run)
if (!irqchip_in_kernel(vcpu->kvm) && is_external_interrupt(vect_info)) {
int irq = vect_info & VECTORING_INFO_VECTOR_MASK;
set_bit(irq, vcpu->arch.irq_pending);
set_bit(irq / BITS_PER_LONG, &vcpu->arch.irq_summary);
kvm_push_irq(vcpu, irq);
}
if ((intr_info & INTR_INFO_INTR_TYPE_MASK) == INTR_TYPE_NMI_INTR)

18
arch/x86/kvm/x86.h
View file

@ -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