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authorMarc Zyngier <marc.zyngier@arm.com>2013-01-23 13:21:59 -0500
committerMarc Zyngier <marc.zyngier@arm.com>2013-02-11 19:06:00 +0000
commit967f84275ba74eac696f798ce1a780285170b5e7 (patch)
treee8dfd11d9587c0faf1511765e84127ed50b6d6dc /arch/arm/kvm
parentc7e3ba64ba16eddfbfc66ec099860f40e808e124 (diff)
downloadop-kernel-dev-967f84275ba74eac696f798ce1a780285170b5e7.zip
op-kernel-dev-967f84275ba74eac696f798ce1a780285170b5e7.tar.gz
ARM: KVM: arch_timers: Wire the init code and config option
It is now possible to select CONFIG_KVM_ARM_TIMER to enable the KVM architected timer support. Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'arch/arm/kvm')
-rw-r--r--arch/arm/kvm/Kconfig8
-rw-r--r--arch/arm/kvm/Makefile1
-rw-r--r--arch/arm/kvm/arm.c11
-rw-r--r--arch/arm/kvm/vgic.c1
4 files changed, 21 insertions, 0 deletions
diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig
index d8126f2..49dd64e 100644
--- a/arch/arm/kvm/Kconfig
+++ b/arch/arm/kvm/Kconfig
@@ -59,6 +59,14 @@ config KVM_ARM_VGIC
---help---
Adds support for a hardware assisted, in-kernel GIC emulation.
+config KVM_ARM_TIMER
+ bool "KVM support for Architected Timers"
+ depends on KVM_ARM_VGIC && ARM_ARCH_TIMER
+ select HAVE_KVM_IRQCHIP
+ default y
+ ---help---
+ Adds support for the Architected Timers in virtual machines
+
source drivers/virtio/Kconfig
endif # VIRTUALIZATION
diff --git a/arch/arm/kvm/Makefile b/arch/arm/kvm/Makefile
index dece8ed..fc96ce6 100644
--- a/arch/arm/kvm/Makefile
+++ b/arch/arm/kvm/Makefile
@@ -20,3 +20,4 @@ obj-y += kvm-arm.o init.o interrupts.o
obj-y += arm.o guest.o mmu.o emulate.o reset.o
obj-y += coproc.o coproc_a15.o mmio.o psci.o
obj-$(CONFIG_KVM_ARM_VGIC) += vgic.o
+obj-$(CONFIG_KVM_ARM_TIMER) += arch_timer.o
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index 800b2cd..9ada554 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -289,6 +289,7 @@ int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu)
void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu)
{
kvm_mmu_free_memory_caches(vcpu);
+ kvm_timer_vcpu_terminate(vcpu);
kmem_cache_free(kvm_vcpu_cache, vcpu);
}
@@ -330,6 +331,9 @@ int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu)
if (ret)
return ret;
+ /* Set up the timer */
+ kvm_timer_vcpu_init(vcpu);
+
return 0;
}
@@ -1103,6 +1107,13 @@ static int init_hyp_mode(void)
vgic_present = true;
#endif
+ /*
+ * Init HYP architected timer support
+ */
+ err = kvm_timer_hyp_init();
+ if (err)
+ goto out_free_mappings;
+
kvm_info("Hyp mode initialized successfully\n");
return 0;
out_free_vfp:
diff --git a/arch/arm/kvm/vgic.c b/arch/arm/kvm/vgic.c
index 6d84076..c9a1731 100644
--- a/arch/arm/kvm/vgic.c
+++ b/arch/arm/kvm/vgic.c
@@ -1418,6 +1418,7 @@ int kvm_vgic_init(struct kvm *kvm)
for (i = VGIC_NR_PRIVATE_IRQS; i < VGIC_NR_IRQS; i += 4)
vgic_set_target_reg(kvm, 0, i);
+ kvm_timer_init(kvm);
kvm->arch.vgic.ready = true;
out:
mutex_unlock(&kvm->lock);
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