This patch introduces kernel_irqchip_type member in Machine class, which
it passed to kvm_arch_irqchip_create. It allows machine models to specify
correct GIC type during KVM capability verification. The variable is
defined as int in order to be architecture-agnostic for potential future
uses by other architectures.
Signed-off-by: Pavel Fedin <p.fe...@samsung.com>
---
hw/arm/vexpress.c | 1 +
hw/arm/virt.c | 3 +++
include/hw/boards.h | 1 +
include/sysemu/kvm.h | 3 ++-
kvm-all.c | 2 +-
stubs/kvm.c | 2 +-
target-arm/kvm.c | 13 +++++++++++--
7 files changed, 20 insertions(+), 5 deletions(-)
diff --git a/hw/arm/vexpress.c b/hw/arm/vexpress.c
index da21788..0675a00 100644
--- a/hw/arm/vexpress.c
+++ b/hw/arm/vexpress.c
@@ -556,6 +556,7 @@ static void vexpress_common_init(MachineState *machine)
const hwaddr *map = daughterboard->motherboard_map;
int i;
+ machine->kernel_irqchip_type = KVM_DEV_TYPE_ARM_VGIC_V2;
daughterboard->init(vms, machine->ram_size, machine->cpu_model, pic);
/*
diff --git a/hw/arm/virt.c b/hw/arm/virt.c
index 4846892..2e7d858 100644
--- a/hw/arm/virt.c
+++ b/hw/arm/virt.c
@@ -945,6 +945,9 @@ static void virt_instance_init(Object *obj)
"Set on/off to enable/disable the ARM "
"Security Extensions (TrustZone)",
NULL);
+
+ /* Default GIC type is v2 */
+ vms->parent.kernel_irqchip_type = KVM_DEV_TYPE_ARM_VGIC_V2;
}
static void virt_class_init(ObjectClass *oc, void *data)
diff --git a/include/hw/boards.h b/include/hw/boards.h
index 2aec9cb..37eb767 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -127,6 +127,7 @@ struct MachineState {
char *accel;
bool kernel_irqchip_allowed;
bool kernel_irqchip_required;
+ int kernel_irqchip_type;
int kvm_shadow_mem;
char *dtb;
char *dumpdtb;
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index 983e99e..8f4d485 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -434,6 +434,7 @@ void kvm_init_irq_routing(KVMState *s);
/**
* kvm_arch_irqchip_create:
* @KVMState: The KVMState pointer
+ * @type: irqchip type, architecture-specific
*
* Allow architectures to create an in-kernel irq chip themselves.
*
@@ -441,7 +442,7 @@ void kvm_init_irq_routing(KVMState *s);
* 0: irq chip was not created
* > 0: irq chip was created
*/
-int kvm_arch_irqchip_create(KVMState *s);
+int kvm_arch_irqchip_create(KVMState *s, int type);
/**
* kvm_set_one_reg - set a register value in KVM via KVM_SET_ONE_REG ioctl
diff --git a/kvm-all.c b/kvm-all.c
index 06e06f2..8df938d 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -1395,7 +1395,7 @@ static void kvm_irqchip_create(MachineState *machine,
KVMState *s)
/* First probe and see if there's a arch-specific hook to create the
* in-kernel irqchip for us */
- ret = kvm_arch_irqchip_create(s);
+ ret = kvm_arch_irqchip_create(s, machine->kernel_irqchip_type);
if (ret == 0) {
ret = kvm_vm_ioctl(s, KVM_CREATE_IRQCHIP);
}
diff --git a/stubs/kvm.c b/stubs/kvm.c
index e7c60b6..a8505ff 100644
--- a/stubs/kvm.c
+++ b/stubs/kvm.c
@@ -1,7 +1,7 @@
#include "qemu-common.h"
#include "sysemu/kvm.h"
-int kvm_arch_irqchip_create(KVMState *s)
+int kvm_arch_irqchip_create(KVMState *s, int type)
{
return 0;
}
diff --git a/target-arm/kvm.c b/target-arm/kvm.c
index b278542..180f75f 100644
--- a/target-arm/kvm.c
+++ b/target-arm/kvm.c
@@ -583,19 +583,28 @@ void kvm_arch_init_irq_routing(KVMState *s)
{
}
-int kvm_arch_irqchip_create(KVMState *s)
+int kvm_arch_irqchip_create(KVMState *s, int type)
{
int ret;
+ /* Failure here means forgotten initialization of
+ * machine->kernel_irqchip_type in model code
+ */
+ assert(type != 0);
+
/* If we can create the VGIC using the newer device control API, we
* let the device do this when it initializes itself, otherwise we
* fall back to the old API */
- ret = kvm_create_device(s, KVM_DEV_TYPE_ARM_VGIC_V2, true);
+ ret = kvm_create_device(s, type, true);
if (ret == 0) {
return 1;
}
+ /* Fallback will create VGIC v2 */
+ if (type != KVM_DEV_TYPE_ARM_VGIC_V2) {
+ return ret;
+ }
return 0;
}
--
1.9.5.msysgit.0
