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Message-Id: <1242638585-18470-35-git-send-email-avi@redhat.com>
Date: Mon, 18 May 2009 12:22:56 +0300
From: Avi Kivity <avi@...hat.com>
To: linux-kernel@...r.kernel.org
Cc: kvm@...r.kernel.org
Subject: [PATCH 34/43] KVM: reuse (pop|push)_irq from svm.c in vmx.c
From: Gleb Natapov <gleb@...hat.com>
The prioritized bit vector manipulation functions are useful in both vmx and
svm.
Signed-off-by: Gleb Natapov <gleb@...hat.com>
Signed-off-by: Avi Kivity <avi@...hat.com>
---
arch/x86/kvm/svm.c | 25 ++++---------------------
arch/x86/kvm/vmx.c | 17 ++---------------
arch/x86/kvm/x86.h | 18 ++++++++++++++++++
3 files changed, 24 insertions(+), 36 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 5b35ebd..aa528db 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -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,
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index b5eae7a..2c0a2ed 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -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)
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
--
1.6.0.6
--
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