From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
To both avoid that kvm_irqchip_in_kernel always has to be paired with
kvm_enabled and that the former ends up in a function call, implement it
like the latter. This means keeping the state in a global variable and
defining kvm_irqchip_in_kernel as a preprocessor macro.
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Signed-off-by: Marcelo Tosatti <mtosatti@xxxxxxxxxx>
---
hw/pc.c | 4 ++--
hw/pc_piix.c | 6 +++---
kvm-all.c | 13 ++++---------
kvm-stub.c | 5 -----
kvm.h | 8 +++++---
target-i386/kvm.c | 4 ++--
6 files changed, 16 insertions(+), 24 deletions(-)
diff --git a/hw/pc.c b/hw/pc.c
index 7f3aa65..3b35735 100644
--- a/hw/pc.c
+++ b/hw/pc.c
@@ -889,7 +889,7 @@ static DeviceState *apic_init(void *env, uint8_t apic_id)
DeviceState *dev;
static int apic_mapped;
- if (kvm_enabled() && kvm_irqchip_in_kernel()) {
+ if (kvm_irqchip_in_kernel()) {
dev = qdev_create(NULL, "kvm-apic");
} else {
dev = qdev_create(NULL, "apic");
@@ -908,7 +908,7 @@ static DeviceState *apic_init(void *env, uint8_t apic_id)
}
/* KVM does not support MSI yet. */
- if (!kvm_enabled() || !kvm_irqchip_in_kernel()) {
+ if (!kvm_irqchip_in_kernel()) {
msi_supported = true;
}
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index c06f1b5..17f8d5d 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -104,7 +104,7 @@ static void ioapic_init(GSIState *gsi_state)
SysBusDevice *d;
unsigned int i;
- if (kvm_enabled() && kvm_irqchip_in_kernel()) {
+ if (kvm_irqchip_in_kernel()) {
dev = qdev_create(NULL, "kvm-ioapic");
} else {
dev = qdev_create(NULL, "ioapic");
@@ -183,7 +183,7 @@ static void pc_init1(MemoryRegion *system_memory,
}
gsi_state = g_malloc0(sizeof(*gsi_state));
- if (kvm_enabled() && kvm_irqchip_in_kernel()) {
+ if (kvm_irqchip_in_kernel()) {
kvm_piix3_setup_irq_routing(pci_enabled);
gsi = qemu_allocate_irqs(kvm_piix3_gsi_handler, gsi_state,
GSI_NUM_PINS);
@@ -209,7 +209,7 @@ static void pc_init1(MemoryRegion *system_memory,
}
isa_bus_irqs(isa_bus, gsi);
- if (kvm_enabled() && kvm_irqchip_in_kernel()) {
+ if (kvm_irqchip_in_kernel()) {
i8259 = kvm_i8259_init(isa_bus);
} else if (xen_enabled()) {
i8259 = xen_interrupt_controller_init();
diff --git a/kvm-all.c b/kvm-all.c
index 0b87658..c4babda 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -74,7 +74,6 @@ struct KVMState
#ifdef KVM_CAP_SET_GUEST_DEBUG
struct kvm_sw_breakpoint_head kvm_sw_breakpoints;
#endif
- int irqchip_in_kernel;
int pit_in_kernel;
int xsave, xcrs;
int many_ioeventfds;
@@ -88,6 +87,7 @@ struct KVMState
};
KVMState *kvm_state;
+bool kvm_kernel_irqchip;
static const KVMCapabilityInfo kvm_required_capabilites[] = {
KVM_CAP_INFO(USER_MEMORY),
@@ -193,11 +193,6 @@ static void kvm_reset_vcpu(void *opaque)
kvm_arch_reset_vcpu(env);
}
-int kvm_irqchip_in_kernel(void)
-{
- return kvm_state->irqchip_in_kernel;
-}
-
int kvm_pit_in_kernel(void)
{
return kvm_state->pit_in_kernel;
@@ -742,7 +737,7 @@ int kvm_irqchip_set_irq(KVMState *s, int irq, int level)
struct kvm_irq_level event;
int ret;
- assert(s->irqchip_in_kernel);
+ assert(kvm_irqchip_in_kernel());
event.level = level;
event.irq = irq;
@@ -862,7 +857,7 @@ static int kvm_irqchip_create(KVMState *s)
if (kvm_check_extension(s, KVM_CAP_IRQ_INJECT_STATUS)) {
s->irqchip_inject_ioctl = KVM_IRQ_LINE_STATUS;
}
- s->irqchip_in_kernel = 1;
+ kvm_kernel_irqchip = true;
kvm_init_irq_routing(s);
@@ -1315,7 +1310,7 @@ int kvm_has_gsi_routing(void)
int kvm_allows_irq0_override(void)
{
- return !kvm_enabled() || !kvm_irqchip_in_kernel() || kvm_has_gsi_routing();
+ return !kvm_irqchip_in_kernel() || kvm_has_gsi_routing();
}
void kvm_setup_guest_memory(void *start, size_t size)
diff --git a/kvm-stub.c b/kvm-stub.c
index 6c2b06b..f63a0d2 100644
--- a/kvm-stub.c
+++ b/kvm-stub.c
@@ -16,11 +16,6 @@
#include "gdbstub.h"
#include "kvm.h"
-int kvm_irqchip_in_kernel(void)
-{
- return 0;
-}
-
int kvm_pit_in_kernel(void)
{
return 0;
diff --git a/kvm.h b/kvm.h
index 40b5ffc..f9f1dc8 100644
--- a/kvm.h
+++ b/kvm.h
@@ -23,11 +23,14 @@
#endif
extern int kvm_allowed;
+extern bool kvm_kernel_irqchip;
#if defined CONFIG_KVM || !defined NEED_CPU_H
-#define kvm_enabled() (kvm_allowed)
+#define kvm_enabled() (kvm_allowed)
+#define kvm_irqchip_in_kernel() (kvm_kernel_irqchip)
#else
-#define kvm_enabled() (0)
+#define kvm_enabled() (0)
+#define kvm_irqchip_in_kernel() (false)
#endif
struct kvm_run;
@@ -80,7 +83,6 @@ int kvm_set_signal_mask(CPUState *env, const sigset_t *sigset);
#endif
int kvm_pit_in_kernel(void);
-int kvm_irqchip_in_kernel(void);
int kvm_on_sigbus_vcpu(CPUState *env, int code, void *addr);
int kvm_on_sigbus(int code, void *addr);
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 445c060..981192d 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -1356,7 +1356,7 @@ static int kvm_get_apic(CPUState *env)
struct kvm_lapic_state kapic;
int ret;
- if (apic && kvm_enabled() && kvm_irqchip_in_kernel()) {
+ if (apic && kvm_irqchip_in_kernel()) {
ret = kvm_vcpu_ioctl(env, KVM_GET_LAPIC, &kapic);
if (ret < 0) {
return ret;
@@ -1372,7 +1372,7 @@ static int kvm_put_apic(CPUState *env)
DeviceState *apic = env->apic_state;
struct kvm_lapic_state kapic;
- if (apic && kvm_enabled() && kvm_irqchip_in_kernel()) {
+ if (apic && kvm_irqchip_in_kernel()) {
kvm_put_apic_state(apic, &kapic);
return kvm_vcpu_ioctl(env, KVM_SET_LAPIC, &kapic);
--
1.7.6.4
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