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| author | Marc Zyngier <marc.zyngier@arm.com> | 2013-01-21 19:36:16 -0500 |
|---|---|---|
| committer | Marc Zyngier <marc.zyngier@arm.com> | 2013-02-11 19:00:10 +0000 |
| commit | 01ac5e342f3b87a9b83b991230d96c22c4167ec9 (patch) | |
| tree | 84c06fa12415ef191bee35914323c7c65a9c4b0d /arch/arm/kvm/arm.c | |
| parent | 348b2b0708f6cdd3d0db95f8d02aa4ad2b3e2fa9 (diff) | |
| download | linux-01ac5e342f3b87a9b83b991230d96c22c4167ec9.tar.gz linux-01ac5e342f3b87a9b83b991230d96c22c4167ec9.tar.bz2 linux-01ac5e342f3b87a9b83b991230d96c22c4167ec9.zip | |
ARM: KVM: VGIC initialisation code
Add the init code for the hypervisor, the virtual machine, and
the virtual CPUs.
An interrupt handler is also wired to allow the VGIC maintenance
interrupts, used to deal with level triggered interrupts and LR
underflows.
A CPU hotplug notifier is registered to disable/enable the interrupt
as requested.
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/arm.c')
| -rw-r--r-- | arch/arm/kvm/arm.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index 3c8d6a9be123..ea7383293ed0 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -642,6 +642,17 @@ static int kvm_vcpu_first_run_init(struct kvm_vcpu *vcpu) vcpu->arch.has_run_once = true; /* + * Initialize the VGIC before running a vcpu the first time on + * this VM. + */ + if (irqchip_in_kernel(vcpu->kvm) && + unlikely(!vgic_initialized(vcpu->kvm))) { + int ret = kvm_vgic_init(vcpu->kvm); + if (ret) + return ret; + } + + /* * Handle the "start in power-off" case by calling into the * PSCI code. */ @@ -1085,6 +1096,10 @@ static int init_hyp_mode(void) if (err) goto out_free_vfp; +#ifdef CONFIG_KVM_ARM_VGIC + vgic_present = true; +#endif + kvm_info("Hyp mode initialized successfully\n"); return 0; out_free_vfp: |