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authorPeter Maydell <peter.maydell@linaro.org>2012-10-10 14:46:20 +0100
committerPeter Maydell <peter.maydell@linaro.org>2012-10-10 14:46:20 +0100
commitfe2b28ae051e1857eede2c1761bcf5477a26c430 (patch)
treebc04a9ef250cfb54143f6db8bc1c45b4f4000149 /hw/arm_pic.c
parentfeb380cb3e05f8581b5776d2c55fd6803b89519a (diff)
ARM: KVM: Add support for KVM on ARM architecture
Add basic support for KVM on ARM architecture. Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu> [Rusty: updates to use KVM_ARM_VCPU_INIT, KVM_GET/SET_MSRS] Signed-off-by: Rusty Russell <rusty.russell@linaro.org> [PMM: Minor tweaks and code cleanup, switch to ONE_REG] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm_pic.c')
-rw-r--r--hw/arm_pic.c28
1 files changed, 28 insertions, 0 deletions
diff --git a/hw/arm_pic.c b/hw/arm_pic.c
index ffb4d4171a..72272dc822 100644
--- a/hw/arm_pic.c
+++ b/hw/arm_pic.c
@@ -9,6 +9,7 @@
#include "hw.h"
#include "arm-misc.h"
+#include "kvm.h"
/* Input 0 is IRQ and input 1 is FIQ. */
static void arm_pic_cpu_handler(void *opaque, int irq, int level)
@@ -34,7 +35,34 @@ static void arm_pic_cpu_handler(void *opaque, int irq, int level)
}
}
+#ifdef CONFIG_KVM
+static void kvm_arm_pic_cpu_handler(void *opaque, int irq, int level)
+{
+ ARMCPU *cpu = opaque;
+ CPUARMState *env = &cpu->env;
+ int kvm_irq = KVM_ARM_IRQ_TYPE_CPU << KVM_ARM_IRQ_TYPE_SHIFT;
+
+ switch (irq) {
+ case ARM_PIC_CPU_IRQ:
+ kvm_irq |= KVM_ARM_IRQ_CPU_IRQ;
+ break;
+ case ARM_PIC_CPU_FIQ:
+ kvm_irq |= KVM_ARM_IRQ_CPU_FIQ;
+ break;
+ default:
+ hw_error("kvm_arm_pic_cpu_handler: Bad interrupt line %d\n", irq);
+ }
+ kvm_irq |= env->cpu_index << KVM_ARM_IRQ_VCPU_SHIFT;
+ kvm_set_irq(kvm_state, kvm_irq, level ? 1 : 0);
+}
+#endif
+
qemu_irq *arm_pic_init_cpu(ARMCPU *cpu)
{
+#ifdef CONFIG_KVM
+ if (kvm_enabled()) {
+ return qemu_allocate_irqs(kvm_arm_pic_cpu_handler, cpu, 2);
+ }
+#endif
return qemu_allocate_irqs(arm_pic_cpu_handler, cpu, 2);
}