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ARM: KVM: Add support for KVM on ARM architecture

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Add basic support for KVM on ARM architecture.

Signed-off-by: Christoffer Dall <cdall@cs.columbia.edu>
[PMM: Minor tweaks and code cleanup, switch to ONE_REG]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Christoffer Dall 2013-03-05 00:34:41 +00:00 • committed by Peter Maydell
parent f5206413af
commit 494b00c76a
5 changed files with 363 additions and 1 deletions
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26
hw/arm_pic.c
View file

@ -9,6 +9,7 @@
#include "hw.h"
#include "arm-misc.h"
#include "sysemu/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 +35,32 @@ static void arm_pic_cpu_handler(void *opaque, int irq, int level)
}
}
static void kvm_arm_pic_cpu_handler(void *opaque, int irq, int level)
{
#ifdef CONFIG_KVM
ARMCPU *cpu = opaque;
CPUState *cs = CPU(cpu);
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 |= cs->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)
{
if (kvm_enabled()) {
return qemu_allocate_irqs(kvm_arm_pic_cpu_handler, cpu, 2);
}
return qemu_allocate_irqs(arm_pic_cpu_handler, cpu, 2);
}